[HICN-298] Release new hICN app for Android

Change-Id: I43adc62fadf00690b687078d739788dffdc5e566
Signed-off-by: Jordan Augé <jordan.auge+fdio@cisco.com>

65 files changed, 8614 insertions, 2354 deletions

diff --git a/ctrl/facemgr/CMakeLists.txt b/ctrl/facemgr/CMakeLists.txt
index f688dd2ca..377773c2d 100644
--- a/ctrl/facemgr/CMakeLists.txt
+++ b/ctrl/facemgr/CMakeLists.txt
@@ -20,6 +20,22 @@ endif()
 
 project(facemgr)
 
+option(WITH_THREAD "Run library as thread" OFF)
+option(WITH_EXAMPLE_DUMMY "Compile dummy example interface" OFF)
+option(WITH_EXAMPLE_UPDOWN "Compile updown example interface" OFF)
+
+if(WITH_THREAD)
+    message("Building with thread support")
+endif()
+
+if(WITH_EXAMPLE_DUMMY)
+    message("Building with 'dummy' example interface")
+endif()
+
+if(WITH_EXAMPLE_UPDOWN)
+    message("Building with 'updown' example interface")
+endif()
+
 if (NOT CMAKE_BUILD_TYPE)
     message(STATUS "${PROJECT_NAME}: No build type selected, default to Release")
     set(CMAKE_BUILD_TYPE "Release")
@@ -42,22 +58,29 @@ find_package_wrapper(Config REQUIRED)
 find_package_wrapper(LibEvent REQUIRED)
 
 if(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
+  find_package_wrapper(Libhicn REQUIRED)
   find_package_wrapper(Libhicnctrl REQUIRED)
-  set(FACE_MGR facemgr)
+  set(FACEMGR facemgr)
+  set(LIBFACEMGR facemgr)
 else()
-  if (ANDROID_API)
-    set(LIBHICNCTRL_LIBRARIES ${LIBHICN_CTRL_STATIC})
+  if (${CMAKE_SYSTEM_NAME} STREQUAL "Android")
+    set(HICN_LIBRARIES ${LIBHICN_STATIC})
+    set(LIBHICNCTRL_LIBRARIES ${LIBHICNCTRL_STATIC})
     list(APPEND DEPENDENCIES
-      ${LIBHICN_CTRL_STATIC}
+      ${LIBHICN_STATIC}
+      ${LIBHICNCTRL_STATIC}
     )
   else ()
-    set(LIBHICNCTRL_LIBRARIES ${LIBHICN_CTRL_SHARED})
+    set(HICN_LIBRARIES ${LIBHICN_SHARED})
+    set(LIBHICNCTRL_LIBRARIES ${LIBHICNCTRL_SHARED})
     list(APPEND DEPENDENCIES
-      ${LIBHICN_CTRL_SHARED}
+      ${LIBHICN_SHARED}
+      ${LIBHICNCTRL_SHARED}
     )
   endif ()
 endif()
 
+add_subdirectory(includes)
 add_subdirectory(src)
 
 include(Packaging)
diff --git a/ctrl/facemgr/README.md b/ctrl/facemgr/README.md
index e1a1beb4f..0cad9bc11 100644
--- a/ctrl/facemgr/README.md
+++ b/ctrl/facemgr/README.md
@@ -1 +1,11 @@
 # hICN Face Manager
+
+The bonjour interfaces uses SO_BINDTODEVICE to be able to send bonjour queries
+to the right interfaces. As such facemgr has to be run as root, or with the
+CAP_NET_RAW capability.
+
+```
+sudo getcap build-root/bin/facemgr
+sudo setcap cap_net_raw+ep build-root/bin/facemgr
+sudo getcap build-root/bin/facemgr
+```
diff --git a/ctrl/facemgr/cmake/Modules/Packaging.cmake b/ctrl/facemgr/cmake/Modules/Packaging.cmake
index 97a1b6260..3a7e5a85c 100644
--- a/ctrl/facemgr/cmake/Modules/Packaging.cmake
+++ b/ctrl/facemgr/cmake/Modules/Packaging.cmake
@@ -15,17 +15,17 @@
 # Packages section
 ######################
 
-set(${FACE_MGR}_DESCRIPTION
-  "hICN face manager, lib${LIBHICN_CTRL}"
+set(${FACEMGR}_DESCRIPTION
+  "hICN face manager, lib${LIBHICNCTRL}"
   CACHE STRING "Description for deb/rpm package."
 )
 
-set(${FACE_MGR}_DEB_DEPENDENCIES
-  "libconfig9, libevent-dev, lib${LIBHICN_CTRL} (>= stable_version)"
+set(${FACEMGR}_DEB_DEPENDENCIES
+  "libconfig9, libevent-dev, lib${LIBHICNCTRL} (>= stable_version)"
   CACHE STRING "Dependencies for deb/rpm package."
 )
 
-set(${FACE_MGR}_RPM_DEPENDENCIES
-  "libconfig, libevent-devel, lib${LIBHICN_CTRL} >= stable_version"
+set(${FACEMGR}_RPM_DEPENDENCIES
+  "libconfig, libevent-devel, lib${LIBHICNCTRL} >= stable_version"
   CACHE STRING "Dependencies for deb/rpm package."
 )
diff --git a/ctrl/facemgr/doc/interface.md b/ctrl/facemgr/doc/interface.md
new file mode 100644
index 000000000..11c8da275
--- /dev/null
+++ b/ctrl/facemgr/doc/interface.md
@@ -0,0 +1,358 @@
+# Face manager : Interfaces
+
+## Overview
+
+The architecture of the face manager is built around the concept of interfaces,
+which allows for a modular and extensible deployment.
+
+Interfaces are used to implement in isolation various sources of information
+which help with the construction of faces (such as network interface and service
+discovery), and with handling the heterogeneity of host platforms.
+
+
+### Platform and supported interfaces
+
+Currently, Android, Linux and MacOS are supported through the following
+interfaces:
+
+- hicn-light [Linux, Android, MacOS, iOS]
+    An interface to the hicn-light forwarder, and more specifically to the Face
+    Table and FIB data structures. This component is responsible to effectively
+    create, update and delete faces in the forwarder, based on the information
+    provided by third party interfaces, plus adding default routes for each of
+    the newly created face. The communication with the forwarder is based on the
+    hicn control library (`libhicnctrl`).
+
+- netlink [Linux, Android]
+    The default interface on Linux systems (including Android) to communicate
+    with the kernel and receive information from various sources, including link
+    and address information (both IPv4 and IPv6) about network interfaces.
+
+- android\_utility [Android only]
+    Information available through Netlink is limited with respect to cellular
+    interfaces. This component allows querying the Android layer through SDK
+    functions to get the type of a given network interface (Wired, WiFi or
+    Cellular).
+
+- bonjour [Linux, Android]
+    This component performs remote service discovery based on the bonjour
+    protocol to discover a remote hICN forwarder that might be needed to
+    establish overlay faces.
+
+- network\_framework [MacOS, iOS]
+
+    This component uses the recommended Network framework on Apple devices,
+    which provided all required information to query faces in a unified API:
+    link and address information, interface types, and bonjour service
+    discovery.
+
+
+### Architectural overview
+
+#### Facelets
+
+TODO:
+- Key attributes (netdevice and protocol family)
+- Facelet API
+
+#### Events
+
+TODO
+
+#### Facelet cache & event scheduling
+
+TODO:
+ - Facelet cache
+ - Joins
+ - How synchronization work
+
+### Interface API
+
+TODO
+
+## Developing a new interface
+
+### Dummy template
+
+The face manager source code includes a template that can be used as a skeleton
+to develop new faces. It can be found in `src/interface/dummy/dummy.{h,c}`. Both
+include guard and specific interface functions are prefixed by a (short)
+identifier which acts as a namespace for interface specific code (in our case
+the string 'dummy\_').
+
+Registration and instanciation of the different interfaces is currently done at
+compile time in the file `src/api.c`, and the appropriate hooks to use the dummy
+interface are avaialble in the code between `#if 0/#endif` tags.
+
+#### Interface template header; configuration parameters
+
+All interfaces have a standard interface defined in `src/interface.{h,c}`, and
+as such the header file is only used to specify the configuration parameters of
+the interface, if any.
+
+In the template, these configuration options are empty:
+```
+/*
+ * Configuration data
+ */
+typedef struct {
+    /* ... */
+} dummy_cfg_t;
+```
+
+#### Overview of the interface template
+
+The file starts with useful includes:
+- the global include `<hicn/facemgr.h>` : this provides public facing elements
+    of the face manager, such the standard definition of faces (`face_t` from
+    `libhicnctrl`), helper classes (such as `ip_address_t` from `libhicn`), etc.
+- common.h
+- facelet.h : facelets are the basic unit of communication between the face
+manager and the different interfaces. They are used to construct the faces
+incrementally.
+- interface.h : the parent class of interfaces, such as the current dummy
+interface.
+
+Each interface can hold a pointer to an internal data structure, which is
+declared as follows:
+```
+/*
+ * Internal data
+ */
+typedef struct {
+    /* The configuration data will likely be allocated on the stack (or should
+     * be freed) by the caller, we recommend to make a copy of this data.
+     * This copy can further be altered with default values.
+     */
+    dummy_cfg_t cfg;
+
+    /* ... */
+
+    int fd; /* Sample internal data: file descriptor */
+} dummy_data_t;
+```
+
+We find here a copy of the configuration settings (which allows the called to
+instanciate the structure on the stack), as well as a file descriptor
+(assuming most interfaces will react on events on a file descriptor).
+
+The rest of the file consists in the implementation of the interface, in
+particular the different function required by the registration of a new
+interface to the system. They are grouped as part of the `interface_ops_t` data
+structure declared at the end of the file:
+
+```
+interface\_ops\_t dummy\_ops = {
+    .type = "dummy",
+    .initialize = dummy_initialize,
+    .finalize = dummy_finalize,
+    .callback = dummy_callback,
+    .on_event = dummy_on_event,
+};
+```
+
+The structure itself is declared and documented in `src/interface.h`
+```
+/**
+ * \brief Interface operations
+ */
+typedef struct {
+    /** The type given to the interfaces */
+    char * type;
+    /* Constructor */
+    int (*initialize)(struct interface\_s * interface, void * cfg);
+    /* Destructor */
+    int (*finalize)(struct interface_s * interface);
+    /* Callback upon file descriptor event (iif previously registered) */
+    int (*callback)(struct interface_s * interface);
+    /* Callback upon facelet events coming from the face manager */
+    int (*on_event)(struct interface_s * interface, const struct facelet_s * facelet);
+} interface\_ops\_t;
+```
+
+Such an interface has to be registered first, then one (or multiple) instance(s)
+can be created (see `src/interface.c` for the function prototypes, and
+`src/api.c` for their usage).
+
+- interface registration:
+
+```
+extern interface\_ops\_t dummy\_ops;
+
+/* [...] */
+
+rc = interface\_register(&dummy\_ops);
+if (rc < 0)
+    goto ERR_REGISTER;
+```
+
+- interface instanciation:
+
+```
+#include "interfaces/dummy/dummy.h"
+
+/* [...] */
+
+rc = facemgr_create_interface(facemgr, "dummy0", "dummy", &facemgr->dummy);
+if (rc < 0) {
+    ERROR("Error creating 'Dummy' interface\n");
+    goto ERR_DUMMY_CREATE;
+}
+```
+
+#### Implementation of the interface API
+
+We now quickly go other the different functions, but their usage will be better
+understood through the hands-on example treated in the following section.
+
+In the template, the constructor is the most involved as it need to:
+
+- initialize the internal data structure:
+
+```
+    dummy_data_t * data = malloc(sizeof(dummy_data_t));
+    if (!data)
+        goto ERR_MALLOC;
+    interface->data = data;
+```
+
+- process configuration parameters, eventually setting some default values:
+
+```
+    /* Use default values for unspecified configuration parameters */
+    if (cfg) {
+        data->cfg = *(dummy_cfg_t *)cfg;
+    } else {
+        memset(&data->cfg, 0, sizeof(data->cfg));
+    }
+```
+
+- open an eventually required file descriptor
+
+For the sake of simplicity, the current API only supports a single file
+descriptor per-interface, and it has to be created in the constructor, and
+set as the return value so as to be registered by the system, and added to the
+event loop for read events. A return value of 0 means the interface does not
+require any file descriptor. As usual, a negative return value indicates an
+error.
+
+```
+    data->fd = 0;
+
+    /* ... */
+
+    /*
+     * We should return a negative value in case of error, and a positive value
+     * otherwise:
+     *  - a file descriptor (>0) will be added to the event loop; or
+     *  - 0 if we don't use any file descriptor
+     */
+    return data->fd;
+```
+
+While support for multiple file descriptors might be added in the future, an
+alternative short-term implementation might consider the instanciation of
+multiple interface, as is done for Bonjour in the current codebase, in
+`src/api.c`.
+
+Data reception on the file descriptor will get the callback function called, in
+our case `dummy_callback`. Finally, the destructor `dummy_finalize` should close
+an eventual open file descriptor.
+
+In order to retrieve the internal data structure, that should in particular
+store such a file descriptor, all other function but the constructor can
+dereference it from the interface pointer they receive as parameter:
+
+```
+dummy\_data\_t * data = (dummy\_data\_t*)interface->data;
+```
+
+#### Raising and receiving events
+
+An interface will receive events in the form of a facelet through the `*_on_event`
+function. It can then use the facelet API we have describe above to read
+information about the face.
+
+As this information is declared const, the interface can either create a new
+facelet (identified by the same netdevice and protocol family), or eventually
+clone it.
+
+The facelet event can then be defined and raised to the face maanger for further
+processing through the following code:
+```
+    facelet_set_event(facelet, EVENT_TYPE_CREATE);
+    facelet_raise_event(facelet, interface);
+```
+
+Here the event is a facelet creation (`EVENT_TYPE_CREATE`). The full facelet API
+and the list of possible event types is available in `src/facelet.h`
+
+
+#### Integration in the build system
+
+The build system is based on CMake. Each interface should declare its source
+files, private and public header files, as well as link dependencies in the
+local `CMakeLists.txt` file.
+
+TODO: detail the structure of the file
+
+
+### Hands-on example
+
+#### Overview
+
+In order to better illustrate the development of a new interface, we will
+consider the integration of a sample server providing a signal instructing the
+face manager to alternatively use either the WiFi or the LTE interface. The code
+of this server is available in the folder `examples/updownsrv/`, and the
+corresponding client code in `examples/updowncli`.
+
+Communication between client and server is done through unix sockets over an
+abstract namespace (thereby not using the file system, which would cause issues
+on Android). The server listens for client connections, and periodically
+broadcast a binary information to all connected clients, in the form of one byte
+equal to either \0 (which we might interpret as enable LTE, disable WiFi), or \1
+(enable WiFi, disable LTE).
+
+Our objective is to develop a new face manager interface that would listen to
+such event in order to update the administrative status of the current faces.
+This would thus alternatively set the different interfaces admnistratively up
+and down (which takes precedence over the actual status of the interface when
+the forwarder establishes the set of available next hops for a given prefix).
+The actual realization of such queries will be ultimately performed by the
+hicn-light interface.
+
+#### Sample server and client
+
+In the folder containing the source code of hICN, the following commands allow
+to run the sample server:
+
+```
+cd ctrl/facemgr/examples/updownsrv
+make
+./updownsrv
+```
+
+The server should display "Waiting for clients..."
+
+Similar commands allow to run the sample client:
+```
+cd ctrl/facemgr/examples/updowncli
+make
+./updowncli
+```
+
+The client should display "Waiting for server data...", then every couple of
+seconds display either "WiFi" or "LTE".
+
+#### Facemanager interface
+
+An example illustrating how to connect to the dummy service from `updownsrv` is
+provided as the `updown` interface in the facemgr source code.
+
+This interface periodically swaps the status of the LTE interface up and down.
+It is instanciated as part of the facemgr codebase when the code is compiled
+with the ``-DWITH_EXAMPLE_UPDOWN` cmake option.
+
+
+
diff --git a/ctrl/facemgr/examples/facemgr.conf b/ctrl/facemgr/examples/facemgr.conf
index 54c212c2b..4658d13e3 100644
--- a/ctrl/facemgr/examples/facemgr.conf
+++ b/ctrl/facemgr/examples/facemgr.conf
@@ -1,37 +1,194 @@
+#
 # hICN facemgr configuration file
+#
 
-faces:
-{
-    # A list of interfaces to ignore
-    ignore = ("lo");
-
-    # A list of rules used to assign tags to interfaces
-    # Each rule follows the syntax { name = "NAME"; tags = ("TAG", ...); }
-    # with TAG = WIRED | WIFI | CELLULAR | TRUSTED
-    rules = (
-        {
-            name = "utun1";
-            tags = ("WIRED", "TRUSTED");
-        }
-    );
-
-    overlay = {
-        ipv4 = {
-            local_port = 9695;
-            remote_port = 9695;
-            remote_addr = "10.60.16.14";
-        };
-        ipv6 = {
-            local_port = 9695;
-            remote_port = 9695;
-            remote_addr = "2001:420:44f1:10:20c:29ff:fef3:8f8f";
-        };
-    };
-}
+################################################################################
+# Global settings
+################################################################################
+
+global = {
+
+# Default type for face creation
+#
+# Values: "auto" | "native-udp" | "native-tcp" | "overlay-udp" | "overlay-tcp"
+# Default "auto"
+#
+#face_type = "auto";
+face_type = "overlay-udp"
+
+# Disable service discovery for overlay creation
+#
+# This is only meaningful for overlay_* face types. If service discovery is
+# disabled, only manually entered overlay information will be used, if any.
+# Otherwise, no face will be created.
+#
+# Values : true | false
+# Default: false
+#
+#disable_discovery = true;
+
+# TODO Disable IPv4 face creation
+#
+# Values : true | false
+# Default: false
+#
+#disable_ipv4 = true;
+
+# TODO Disable IPv6 face creation
+#
+# Values : true | false
+# Default: false
+#
+#disable_ipv6 = true;
+
+# TODO overlay
+#
+#   By default, no address is specified, and local and remote ports are set to
+#   the standard value for hICN (9695).
+#
+
+};
+
+################################################################################
+# Per-interface rules
+################################################################################
+#
+# Rules allow to override the default behaviour of the face manager.
+#
+# The list of rules must be specified as follows (note that the last one has no
+# coma at the end) :
+#
+#   rules = (
+#       { ... },
+#       { ... },
+#       { ... }
+#   );
+#
+# A rule is composed of match and override attributes, and has the following
+# syntax:
+#
+#   {
+#       match = {
+#           interface_name = STRING;
+#           interface_type = STRING;
+#       };
+#       override = {
+#          face_type = STRING;
+#          disable_discovery = BOOL;
+#          ignore = BOOL;
+#          tags = (STRING, STRING, STRING);
+#          overlay = {
+#             ipv4 = {
+#                 local_port = PORT;
+#                 remote_addr = IP_ADDRESS;
+#                 remote_port = PORT;
+#             };
+#             ipv6 = {
+#                 local_port = PORT;
+#                 remote_addr = IP_ADDRESS;
+#                 remote_port = PORT;
+#             };
+#          };
+#       };
+#   }
+#
+# Match attributes:
+#
+#   Match attributes serve to identify rules and as such defining two rules with
+#   similar matches is not allowed. However, overlapping match definitions are
+#   possible, in which case only the first matching rule is considered.
+#
+#   A match is composed of the name of an interface and/or its type (either
+#   attribute is optional but at least one has to be specified).
+#
+#   * interface_name - a string representing an interface name
+#
+#   * interface_type - the type of interface to match
+#
+#       Values: "wired" | "wifi" | "cellular"
+#
+# Override attributes:
+#
+#   Those attributes are applied when all specified match attributes correspond,
+#   and override general settings or default values.
+#
+#   * face_type - type used for face creation
+#
+#       Values: "auto" | "native_udp" | "native_tcp" | "overlay_udp" | "overlay_tcp"
+#
+#   * disable_discovery - disable service discovery for overlay creation
+#
+#       Values : true | false
+#
+#   * ignore - a boolean indicating whether that interface should be ignored
+#
+#   * TODO tags - a (possibly empty) list of tags to be associated to the created face.
+#
+#       Values: "wired" | "wifi" | "cellular" | "trusted"
+#
+#   * overlay
+#
+#       An overlay specification is used to complement any information retrieved
+#       through service discovery (or replace it if service discovery is
+#       disabled).
+#
+#       It is possible to specify values for IPv4, IPv6 or both.
+#
+# Note that it is not currently possible to set different settings for IPv4 and
+# IPv6 but overlay specifications.
+#
+#
+# Here are a few example of rule definitions:
+#
+# rules = (
+#     # Ignore localhost interface
+#     {
+#         match = {
+#             interface_name = "lo";
+#         };
+#         override = {
+#             ignore = true;
+#         };
+#     },
+#     # Set tags for unknown tunnnel interface
+#     {
+#         match = {
+#             interface_name = "utun1";
+#         };
+#         override = {
+#             tags = ("WIRED", "TRUSTED");
+#         };
+#     },
+#     # Force cellular connections to use manually specified overlay faces
+#     {
+#         match = {
+#             interface_type = "cellular",
+#         };
+#         override = {
+#             overlay = {
+#                 ipv4 = {
+#                     local_port = 9695;
+#                     remote_addr = "10.60.16.14";
+#                     remote_port = 9695;
+#                 };
+#                 ipv6 = {
+#                     local_port = 9695;
+#                     remote_addr = "2001:420:44f1:10:20c:29ff:fef3:8f8f";
+#                     remote_port = 9695;
+#                 };
+#             };
+#         };
+#     }
+# );
+#
+#rules = (
+#);
+
+################################################################################
+# Logging
+################################################################################
 
 log:
 {
     log_level = "DEBUG";
 }
-
-
diff --git a/ctrl/facemgr/examples/run-bonjour.sh b/ctrl/facemgr/examples/run-bonjour.sh
new file mode 100755
index 000000000..c6c317b42
--- /dev/null
+++ b/ctrl/facemgr/examples/run-bonjour.sh
@@ -0,0 +1,162 @@
+#!/bin/bash
+
+set -e
+
+PORT=9695
+
+#-------------------------------------------------------------------------------
+
+FN_AVAHI_CFG_SRC=$SCRIPT_PATH/etc_avahi_services_hicn.service
+FN_AVAHI_CFG=/etc/avahi/services/hicn.service
+
+# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression
+! read -r -d '' TPL_AVAHI_CFG <<-EOF
+<?xml version="1.0" standalone='no'?>
+<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
+<service-group>
+  <name>hicn node</name>
+  <service>
+    <type>_hicn._udp</type>
+    <port>$PORT</port>
+  </service>
+</service-group>
+EOF
+
+#-------------------------------------------------------------------------------
+
+# Reliably determine script's full path
+SCRIPT_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
+
+# https://unix.stackexchange.com/questions/325594/script-a-test-for-installed-debian-package-error-handling
+function pkg_is_installed()
+{
+    PKG="$1"
+    LISTF=$(mktemp)
+    dpkg-query -W -f '${Package} ${State}\n' >$LISTF
+    grep "^${PKG} " $LISTF >/dev/null
+    GREP_RC=$?
+    rm $LISTF
+
+    # for even moar strict error handling
+    test $GREP_RC == 0 -o $GREP_RC == 1
+
+    return $GREP_RC
+}
+
+# https://stackoverflow.com/questions/3466166/how-to-check-if-running-in-cygwin-mac-or-linux
+function detect_os()
+{
+    unameOut="$(uname -s)"
+    case "${unameOut}" in
+        Linux*)     machine=linux;;
+        Darwin*)    machine=mac;;
+        CYGWIN*)    machine=cygwin;;
+        MINGW*)     machine=mingw;;
+        *)          machine=unknown;;
+    esac
+    echo ${machine}
+}
+
+function ensure_pkg_is_installed()
+{
+    PKG="$1"
+    pkg_is_installed $PKG && return
+    sudo apt install $PKG
+}
+
+function ensure_file_installed()
+{
+    SRC=$1
+    DST=$2
+
+    # Test whether destination exists and is up to date
+    [ -s $DST ] && cmp -s $SRC $DST && return
+
+    sudo cp $SRC $DST
+}
+
+function ensure_file_template()
+{
+    DST=$1
+    TPL=$2
+
+    echo "$TPL" | sudo tee $DST >/dev/null
+}
+
+function is_function()
+{
+    [ "$(type -t $1)" == "function" ]
+}
+
+function os_function()
+{
+    FUN=$1
+    shift
+    ARGS=$@
+
+    OS=$(detect_os)
+    if ! is_function ${FUN}_${OS}; then
+        echo "Platform $OS not supported for $FUN [${FUN}_${OS}]"
+        exit -1
+    fi
+    ${FUN}_${OS} $ARGS
+}
+
+#-------------------------------------------------------------------------------
+
+# NOTE: debian only
+function run_bonjour_server_linux()
+{
+    ensure_pkg_is_installed avahi-daemon
+    #ensure_file_installed $FN_AVAHI_CFG_SRC $FN_AVAHI_CFG
+    ensure_file_template  $FN_AVAHI_CFG "$TPL_AVAHI_CFG"
+    sudo service avahi-daemon restart
+    echo >&2, "Bonjour is now served through avahi"
+}
+
+function run_bonjour_server_mac()
+{
+    dns-sd -R hicn _hicn._tcp local $PORT
+    # Proxy mode -P
+}
+
+function run_bonjour_client_linux()
+{
+    avahi-browse -ptr _hicn._udp
+}
+
+function run_bonjour_client_mac()
+{
+    dns-sd -B _hicn._udp local
+
+}
+
+# XXX function run_bonjour_proxy_linux() { }
+
+function run_bonjour_proxy_mac()
+{
+    if [[ $# != 2 ]]; then
+        echo "Usage: $0 proxy IP_ADDRESS"
+        exit -1
+    fi
+    IP=$1
+    dns-sd -P hicn _hicn._udp local $PORT hicn.local $IP path=/
+}
+
+#-------------------------------------------------------------------------------
+
+case $1 in
+    client)
+        os_function run_bonjour_client
+        ;;
+    server)
+        os_function run_bonjour_server
+        ;;
+    proxy)
+        os_function run_bonjour_proxy $@
+        ;;
+    *)
+        echo "$0 [client|server]"
+        exit -1
+        ;;
+esac
diff --git a/ctrl/facemgr/examples/updowncli/Makefile b/ctrl/facemgr/examples/updowncli/Makefile
new file mode 100644
index 000000000..5e6111c2a
--- /dev/null
+++ b/ctrl/facemgr/examples/updowncli/Makefile
@@ -0,0 +1,25 @@
+EXEC     = $(shell basename $$(pwd))
+CC       = gcc
+
+CFLAGS   = -std=gnu11 -O3 -Wall -Wextra -Wpedantic -Wstrict-aliasing
+#CFLAGS  += $(shell pkg-config --cflags glib-2.0 gio-2.0)
+#LDFLAGS  = $(shell pkg-config --libs   glib-2.0 gio-2.0)
+
+SRC      = $(wildcard *.c)
+OBJ      = $(SRC:.c=.o)
+
+all: $(EXEC)
+
+${EXEC}: $(OBJ)
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+%.o: %.c
+	$(CC) -o $@ -c $< $(CFLAGS)
+
+.PHONY: clean mrproper
+
+clean:
+	@rm -rf *.o
+
+mrproper: clean
+	@rm -rf $(EXEC)
diff --git a/ctrl/facemgr/examples/updowncli/updowncli.c b/ctrl/facemgr/examples/updowncli/updowncli.c
new file mode 100644
index 000000000..4f5a14165
--- /dev/null
+++ b/ctrl/facemgr/examples/updowncli/updowncli.c
@@ -0,0 +1,57 @@
+#include <assert.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+/**
+ * \brief Default unix socket path (the leading \0 means using the abstract
+ * namespace instead of the filesystem).
+ */
+#define UNIX_PATH "\0updownsrv"
+
+int main() {
+    struct sockaddr_un addr;
+    char buf[100];
+    int fd,rc;
+
+    char * socket_path = UNIX_PATH;
+
+    if ( (fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
+        perror("socket error");
+        exit(-1);
+    }
+
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    if (*socket_path == '\0') {
+        *addr.sun_path = '\0';
+        strncpy(addr.sun_path+1, socket_path+1, sizeof(addr.sun_path)-2);
+    } else {
+        strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path)-1);
+    }
+
+    if (connect(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
+        perror("connect error");
+        exit(-1);
+    }
+
+    printf("Waiting for server data...\n");
+    while( (rc=read(fd, buf, sizeof(buf))) > 0) {
+        assert(rc == 1);
+        switch(buf[0]) {
+            case '\0':
+                printf("WiFi\n");
+                break;
+            case '\1':
+                printf("LTE\n");
+                break;
+            default:
+                printf("Unknown\n");
+                break;
+        }
+    }
+
+    return 0;
+}
diff --git a/ctrl/facemgr/examples/updownsrv/Makefile b/ctrl/facemgr/examples/updownsrv/Makefile
new file mode 100644
index 000000000..5e6111c2a
--- /dev/null
+++ b/ctrl/facemgr/examples/updownsrv/Makefile
@@ -0,0 +1,25 @@
+EXEC     = $(shell basename $$(pwd))
+CC       = gcc
+
+CFLAGS   = -std=gnu11 -O3 -Wall -Wextra -Wpedantic -Wstrict-aliasing
+#CFLAGS  += $(shell pkg-config --cflags glib-2.0 gio-2.0)
+#LDFLAGS  = $(shell pkg-config --libs   glib-2.0 gio-2.0)
+
+SRC      = $(wildcard *.c)
+OBJ      = $(SRC:.c=.o)
+
+all: $(EXEC)
+
+${EXEC}: $(OBJ)
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+%.o: %.c
+	$(CC) -o $@ -c $< $(CFLAGS)
+
+.PHONY: clean mrproper
+
+clean:
+	@rm -rf *.o
+
+mrproper: clean
+	@rm -rf $(EXEC)
diff --git a/ctrl/facemgr/examples/updownsrv/updownsrv.c b/ctrl/facemgr/examples/updownsrv/updownsrv.c
new file mode 100644
index 000000000..e10247860
--- /dev/null
+++ b/ctrl/facemgr/examples/updownsrv/updownsrv.c
@@ -0,0 +1,231 @@
+/*
+ * Dummy server sending alternating bytes to all clients.
+ *
+ * This is used by the face manager to illustrate the creation of interfaces
+ * using unix domains that sets a face up and down.
+ */
+
+#include <arpa/inet.h> // inet_ntop
+#include <errno.h> // EINTR,. ..
+#include <netinet/in.h> // INET_ADDRSTRLEN, INET6_ADDRSTRLEN
+#include <stdio.h>
+#include <inttypes.h>
+
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <sys/timerfd.h>
+#include <sys/un.h> // sockaddr_un
+#include <unistd.h> // fcntl
+#include <fcntl.h> // fcntl
+
+
+/**
+ * \brief Default unix socket path (the leading \0 means using the abstract
+ * namespace instead of the filesystem).
+ */
+#define UNIX_PATH "\0updownsrv"
+
+/**
+ * \brief Default interval (in seconds) between timer events */
+#define DEFAULT_INTERVAL 100000
+
+/**
+ * \brief Maximum allowed number of connected clients
+ */
+#define MAX_CLIENTS 5
+
+/**
+ * \brief Maximum backlog of listening unix socket
+ */
+#define LISTEN_BACKLOG MAX_CLIENTS
+
+
+/**
+ * \brief Creates a unix server socket
+ * \param [in] path - string representing the path on which to listen for
+ *      connections
+ * \return int - fd associated to the socket
+ */
+int
+create_unix_server(char * path)
+{
+    struct sockaddr_un addr;
+    int fd;
+
+    fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (fd == -1) {
+        perror("socket error");
+        return -1;
+    }
+
+    if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
+        perror("fcntl");
+        return -1;
+    }
+
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    if (*path == '\0') {
+        *addr.sun_path = '\0';
+        strncpy(addr.sun_path+1, path+1, sizeof(addr.sun_path)-2);
+    } else {
+        strncpy(addr.sun_path, path, sizeof(addr.sun_path)-1);
+        unlink(path);
+    }
+
+    if (bind(fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
+        perror("bind error");
+        return -1;
+    }
+
+    if (listen(fd, LISTEN_BACKLOG) == -1) {
+        perror("listen error");
+        return -1;
+    }
+
+    return fd;
+}
+
+
+/**
+ * \brief Main function
+ */
+int main() {
+    int fd, tfd;
+    int rc;
+
+    /* Alternating state of the server : 0 / 1 */
+    unsigned state = 0;
+
+    /*
+     * This server has to send a signal to all connected clients at periodic
+     * intervals. Since we don't expect a large number of connected clients for
+     * such a simple program, we simply use a statically allocated array.
+     */
+    int clients[MAX_CLIENTS];
+    size_t num_clients = 0;
+
+    fd_set active_fd_set, read_fd_set;
+    FD_ZERO (&active_fd_set);
+
+    /* Create listening unix socket */
+    fd = create_unix_server(UNIX_PATH);
+    if (fd < 0)
+        exit(EXIT_FAILURE);
+    FD_SET (fd, &active_fd_set);
+
+    /* Create timer */
+    tfd = timerfd_create(CLOCK_MONOTONIC, 0);
+    if (tfd == -1) {
+        perror("timer error");
+        exit(EXIT_FAILURE);
+    }
+
+    if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
+        perror("fcntl");
+        exit(EXIT_FAILURE);
+    }
+
+    FD_SET (tfd, &active_fd_set);
+
+    struct itimerspec ts = {
+        .it_interval = {
+            .tv_sec = DEFAULT_INTERVAL,
+            .tv_nsec = 0,
+        },
+        .it_value = {
+            .tv_sec = DEFAULT_INTERVAL,
+            .tv_nsec = 0,
+        }
+    };
+    rc = timerfd_settime(tfd, 0, &ts, NULL);
+    if (rc == -1) {
+        perror("timerfd_settime");
+        exit(EXIT_FAILURE);
+    }
+
+    printf("Waiting for clients...\n");
+
+    for(;;) {
+        /* Block until input arrives on one or more active sockets. */
+        read_fd_set = active_fd_set;
+        rc = select (FD_SETSIZE, &read_fd_set, NULL, NULL, NULL);
+        if (rc < 0) {
+            if (rc == EINTR)
+                break;
+            perror("select");
+            exit (EXIT_FAILURE);
+        }
+
+        /* Service all the sockets with input pending. */
+        for (int i = 0; i < FD_SETSIZE; ++i) {
+            if (!FD_ISSET (i, &read_fd_set))
+                continue;
+            if (i == fd) {
+                /* Connection request on original socket. */
+                int client_fd = accept(fd, NULL, NULL);
+                if (client_fd < 0) {
+                    perror("accept");
+                    continue;
+                }
+
+                fprintf(stderr, "Server: connect from new client\n");
+                clients[num_clients++] = client_fd;
+                FD_SET(client_fd, &active_fd_set);
+            } else if (i == tfd) {
+                /* Timer event */
+                uint64_t res;
+
+                read(tfd, &res, sizeof(res));
+//                while (read(fd, &missed, sizeof(missed)) > 0)
+//                    ;
+                for (unsigned j = 0; j < num_clients; j++) {
+                    write(clients[j], state ? "\1" : "\0", 1);
+                }
+                printf("STATE=%d\n", state);
+                state = 1 - state;
+            } else {
+                char buf[1024];
+                rc = read(i, buf, sizeof(buf));
+                /* Client event : we close the connection on any event... */
+                for (unsigned j = 0; j < num_clients; j++) {
+                    if (i == clients[j]) {
+                        clients[j] = clients[num_clients--];
+                        break;
+                    }
+                }
+                close(i);
+                FD_CLR(i, &active_fd_set);
+            }
+        }
+
+    }
+
+    int ret = EXIT_SUCCESS;
+
+    /* Close all active client connections */
+    for (unsigned i = 0; i < num_clients; i++) {
+        rc = close(clients[i]);
+        if (rc == -1) {
+            perror("close");
+            ret = EXIT_FAILURE;
+        }
+    }
+
+    /* Close server */
+    rc = close(fd);
+    if (rc == -1) {
+        perror("close");
+        ret = EXIT_FAILURE;
+    }
+
+    /* Terminate timer */
+    ts.it_value.tv_sec = 0;
+    rc = timerfd_settime(tfd, 0, &ts, NULL);
+    if (rc == -1) {
+        perror("timerfd_settime");
+        exit(EXIT_FAILURE);
+    }
+
+    exit(ret);
+}
diff --git a/ctrl/facemgr/includes/CMakeLists.txt b/ctrl/facemgr/includes/CMakeLists.txt
new file mode 100644
index 000000000..566424c67
--- /dev/null
+++ b/ctrl/facemgr/includes/CMakeLists.txt
@@ -0,0 +1,44 @@
+# Copyright (c) 2017-2019 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# XXX
+
+set(LIBFACEMGR_INCLUDE_DIRS
+  ${CMAKE_CURRENT_SOURCE_DIR} ""
+  CACHE INTERNAL
+  "" FORCE
+)
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Android")
+
+  set(TO_INSTALL_HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/facemgr.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/facemgr/api.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/facemgr/cfg.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/util/log.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/android_utility/android_utility.h
+    PARENT_SCOPE
+  )
+
+else ()
+
+  set(TO_INSTALL_HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/facemgr.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/facemgr/api.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/facemgr/cfg.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/hicn/util/log.h
+    PARENT_SCOPE
+  )
+
+endif ()
+
+
diff --git a/ctrl/facemgr/src/netdevice.c b/ctrl/facemgr/includes/facemgr.h
index 817b0e47b..b322e7b1f 100644
--- a/ctrl/facemgr/src/netdevice.c
+++ b/ctrl/facemgr/includes/facemgr.h
@@ -14,15 +14,15 @@
  */
 
 /**
- * \file netdevice.c
- * \brief Implementation of Netdevice abstraction
+ * \file facemgr.h
+ * \brief Main interface for hICN face manager library
  */
+#ifndef HICN_FACEMGR_H
+#define HICN_FACEMGR_H
 
-#include "common.h"
-#include "netdevice.h"
+#include <hicn/policy.h>
+#include <hicn/facemgr/api.h>
+#include <hicn/facemgr/cfg.h>
+
+#endif /* HICN_FACEMGR_H */
 
-const char * netdevice_type_str[] = {
-#define _(x) [NETDEVICE_TYPE_ ## x] = STRINGIZE(x),
-foreach_netdevice_type
-#undef _
-}
diff --git a/ctrl/facemgr/includes/hicn/android_utility/android_utility.h b/ctrl/facemgr/includes/hicn/android_utility/android_utility.h
new file mode 100644
index 000000000..53adfedf6
--- /dev/null
+++ b/ctrl/facemgr/includes/hicn/android_utility/android_utility.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file android_utility/android_utility.h
+ * \brief Android utility.
+ *
+ * This class relies on a small utility wrapper shipped with the Android
+ * application to access to Java SDK APIs for information not available to
+ * native code.
+ *
+ * For instance, we currently don't have on Linux any mean to get the type
+ * associated to an interface, especially for cellular interfaces. WiFi and
+ * Bluetooth information is for instance available through specific netlink
+ * subsystems, or by means of a support library, but cellular detection mostly
+ * relies on heuristics based on interface names (eg. in network manager).
+ *
+ * Android ship a Radio Interface Layer (RIL) daemon that exposes a control
+ * socket to the Java API to control the radio layer, but there is no working
+ * code exploiting it and no proper documentation.
+ */
+
+#ifndef FACEMGR_INTERFACE_ANDROID_UTILITY_H
+#define FACEMGR_INTERFACE_ANDROID_UTILITY_H
+
+#ifdef __ANDROID__
+
+#include <jni.h>
+
+typedef struct {
+    JavaVM *jvm;
+} android_utility_cfg_t;
+
+#endif /* __ANDROID__ */
+
+#endif /* FACEMGR_INTERFACE_ANDROID_UTILITY_H */
diff --git a/ctrl/facemgr/src/interface_map.h b/ctrl/facemgr/includes/hicn/facemgr.h
index 5930b3001..4165a8fc4 100644
--- a/ctrl/facemgr/src/interface_map.h
+++ b/ctrl/facemgr/includes/hicn/facemgr.h
@@ -13,12 +13,15 @@
  * limitations under the License.
  */
 
-#ifndef INTERFACE_MAP_H
-#define INTERFACE_MAP_H
+/**
+ * \file facemgr.h
+ * \brief Main interface for hICN face manager library
+ */
+#ifndef HICN_FACEMGR_H
+#define HICN_FACEMGR_H
 
-#include "interface.h"
-#include "util/map.h"
+#include <hicn/policy.h>
+#include <hicn/facemgr/api.h>
 
-TYPEDEF_MAP_H(interface_map, const char *, interface_t *);
+#endif /* HICN_FACEMGR_H */
 
-#endif /* INTERFACE_MAP_H */
diff --git a/ctrl/facemgr/includes/hicn/facemgr/api.h b/ctrl/facemgr/includes/hicn/facemgr/api.h
new file mode 100644
index 000000000..c5c29c219
--- /dev/null
+++ b/ctrl/facemgr/includes/hicn/facemgr/api.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file facemgr.h
+ * \brief Face manager library interface
+ */
+#ifndef FACEMGR_H
+#define FACEMGR_H
+
+#include <hicn/facemgr/cfg.h>
+#include <hicn/util/ip_address.h>
+#ifdef __ANDROID__
+#include <hicn/android_utility/android_utility.h>
+#endif
+
+/*
+ * \brief Manual overlay settings (alternative to service discovery)
+ */
+
+typedef struct {
+    uint16_t local_port;
+    ip_address_t remote_addr;
+    uint16_t remote_port;
+} facemgr_overlay_setting_t;
+
+#define FACEMGR_OVERLAY_SETTING_EMPTY (facemgr_overlay_setting_t) {     \
+    .local_port = 0,                                                    \
+    .remote_addr = IP_ADDRESS_EMPTY,                                    \
+    .remote_port = 0,                                                   \
+}
+
+typedef struct {
+    facemgr_overlay_setting_t v4;
+    facemgr_overlay_setting_t v6;
+} facemgr_overlay_t;
+
+#define FACEMGR_OVERLAY_EMPTY (facemgr_overlay_t) {     \
+    .v4 = FACEMGR_OVERLAY_SETTING_EMPTY,                \
+    .v6 = FACEMGR_OVERLAY_SETTING_EMPTY,                \
+}
+
+/*
+ * \brief Face manager context
+ */
+typedef struct facemgr_s facemgr_t;
+
+int facemgr_initialize(facemgr_t *);
+int facemgr_finalize(facemgr_t *);
+facemgr_t * facemgr_create();
+facemgr_t * facemgr_create_with_config(facemgr_cfg_t * cfg);
+void facemgr_stop(facemgr_t *);
+void facemgr_free(facemgr_t *);
+
+int facemgr_set_config(facemgr_t * facemgr, facemgr_cfg_t * cfg);
+int facemgr_reset_config(facemgr_t * facemgr);
+void facemgr_set_event_loop_handler(facemgr_t * facemgr, void * loop,
+        void * loop_register_fd,
+        void * loop_unregister_event);
+int facemgr_bootstrap(facemgr_t * facemgr);
+#ifdef __ANDROID__
+void facemgr_set_jvm(facemgr_t * facemgr, JavaVM *jvm);
+#endif /* __ANDROID__ */
+
+typedef int (*facemgr_list_faces_cb_t)(face_t * face, void * user_data);
+
+void facemgr_list_faces(facemgr_t * facemgr, facemgr_list_faces_cb_t cb, void * user_data);
+
+#endif /* FACEMGR_H */
diff --git a/ctrl/facemgr/includes/hicn/facemgr/cfg.h b/ctrl/facemgr/includes/hicn/facemgr/cfg.h
new file mode 100644
index 000000000..c121c687f
--- /dev/null
+++ b/ctrl/facemgr/includes/hicn/facemgr/cfg.h
@@ -0,0 +1,193 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file cfg.h
+ * \brief Face manager configuration
+ */
+#ifndef FACEMGR_CFG_H
+#define FACEMGR_CFG_H
+
+#include <hicn/ctrl/face.h>
+#include <hicn/util/log.h>
+
+/* Face type */
+
+#define foreach_face_type_layer \
+    _(UNDEFINED)                \
+    _(3)                        \
+    _(4)                        \
+    _(N)
+
+typedef enum {
+#define _(x) FACE_TYPE_LAYER_ ## x,
+    foreach_face_type_layer
+#undef _
+} face_type_layer_t;
+
+#define foreach_face_type_encap \
+    _(UNDEFINED)                \
+    _(TCP)                      \
+    _(UDP)                      \
+    _(N)
+
+typedef enum {
+#define _(x) FACE_TYPE_ENCAP_ ## x,
+    foreach_face_type_encap
+#undef _
+} face_type_encap_t;
+
+typedef struct {
+   face_type_layer_t layer;
+   face_type_encap_t encap;
+} facemgr_face_type_t;
+
+#define FACEMGR_FACE_TYPE_UNDEFINED (facemgr_face_type_t) {     \
+    .layer = FACE_TYPE_LAYER_UNDEFINED,                         \
+    .encap = FACE_TYPE_ENCAP_UNDEFINED,                         \
+}
+
+#define FACEMGR_FACE_TYPE_NATIVE_UDP (facemgr_face_type_t) {    \
+    .layer = FACE_TYPE_LAYER_3,                                 \
+    .encap = FACE_TYPE_ENCAP_UDP,                               \
+}
+
+#define FACEMGR_FACE_TYPE_NATIVE_TCP (facemgr_face_type_t) {    \
+    .layer = FACE_TYPE_LAYER_3,                                 \
+    .encap = FACE_TYPE_ENCAP_TCP,                               \
+}
+
+#define FACEMGR_FACE_TYPE_OVERLAY_UDP (facemgr_face_type_t) {   \
+    .layer = FACE_TYPE_LAYER_4,                                 \
+    .encap = FACE_TYPE_ENCAP_UDP,                               \
+}
+
+#define FACEMGR_FACE_TYPE_OVERLAY_TCP (facemgr_face_type_t) {   \
+    .layer = FACE_TYPE_LAYER_4,                                 \
+    .encap = FACE_TYPE_ENCAP_TCP,                               \
+}
+
+/* Face manager configuration */
+
+#ifdef __ANDROID__
+#define FACEMGR_FACE_TYPE_DEFAULT FACEMGR_FACE_TYPE_OVERLAY_UDP
+#else
+#define FACEMGR_FACE_TYPE_DEFAULT FACEMGR_FACE_TYPE_NATIVE_TCP
+#endif /* __ANDROID__ */
+
+#define DEFAULT_FACE_TYPE FACE_TYPE_AUTO
+#define FACEMGR_CFG_DEFAULT_DISCOVERY true
+//#define DEFAULT_IGNORE "lo"
+#define FACEMGR_CFG_DEFAULT_IPV4 true
+#define FACEMGR_CFG_DEFAULT_IPV6 true
+
+
+
+typedef struct facemgr_cfg_s facemgr_cfg_t;
+
+facemgr_cfg_t * facemgr_cfg_create();
+void facemgr_cfg_free(facemgr_cfg_t * cfg);
+int facemgr_cfg_initialize(facemgr_cfg_t * cfg);
+int facemgr_cfg_finalize(facemgr_cfg_t * cfg);
+void facemgr_cfg_dump(facemgr_cfg_t * cfg);
+
+/* Rules */
+
+typedef struct facemgr_cfg_rule_s facemgr_cfg_rule_t;
+
+facemgr_cfg_rule_t * facemgr_cfg_rule_create();
+void facemgr_cfg_rule_free(facemgr_cfg_rule_t * rule);
+int facemgr_cfg_rule_initialize(facemgr_cfg_rule_t * rule);
+int facemgr_cfg_rule_finalize(facemgr_cfg_rule_t * rule);
+
+int facemgr_cfg_rule_set_match(facemgr_cfg_rule_t * rule,
+        const char * interface_name, netdevice_type_t interface_type);
+
+int facemgr_cfg_rule_set_face_type(facemgr_cfg_rule_t * cfg_rule, facemgr_face_type_t * face_type);
+int facemgr_cfg_rule_unset_face_type(facemgr_cfg_rule_t * cfg_rule);
+
+int facemgr_cfg_rule_set_discovery(facemgr_cfg_rule_t * cfg_rule, bool status);
+int facemgr_cfg_rule_unset_discovery(facemgr_cfg_rule_t * cfg_rule);
+
+int facemgr_cfg_rule_set_ignore(facemgr_cfg_rule_t * cfg_rule, bool status);
+int facemgr_cfg_rule_unset_ignore(facemgr_cfg_rule_t * cfg_rule);
+
+int facemgr_cfg_rule_set_ipv4(facemgr_cfg_rule_t * cfg_rule, bool status);
+int facemgr_cfg_rule_unset_ipv4(facemgr_cfg_rule_t * cfg_rule);
+
+int facemgr_cfg_rule_set_ipv6(facemgr_cfg_rule_t * cfg_rule, bool status);
+int facemgr_cfg_rule_unset_ipv6(facemgr_cfg_rule_t * cfg_rule);
+
+int facemgr_cfg_rule_set_overlay(facemgr_cfg_rule_t * rule, int family,
+    ip_address_t * local_addr, uint16_t local_port,
+    ip_address_t * remote_addr, uint16_t remote_port);
+int facemgr_rule_unset_overlay(facemgr_cfg_rule_t * rule, int family);
+
+/* General */
+int facemgr_cfg_set_face_type(facemgr_cfg_t * cfg, facemgr_face_type_t * face_type);
+int facemgr_cfg_unset_face_type(facemgr_cfg_t * cfg);
+int facemgr_cfg_set_discovery(facemgr_cfg_t * cfg, bool status);
+int facemgr_cfg_unset_discovery(facemgr_cfg_t * cfg);
+
+int facemgr_cfg_set_overlay(facemgr_cfg_t * cfg, int family,
+    ip_address_t * local_addr, uint16_t local_port,
+    ip_address_t * remote_addr, uint16_t remote_port);
+int facemgr_cfg_unset_overlay(facemgr_cfg_t * cfg, int family);
+
+
+int facemgr_cfg_add_rule(facemgr_cfg_t * cfg, facemgr_cfg_rule_t * rule);
+int facemgr_cfg_del_rule(facemgr_cfg_t * cfg, facemgr_cfg_rule_t * rule);
+int facemgr_cfg_get_rule(const facemgr_cfg_t * cfg, const char * interface_name,
+        netdevice_type_t interface_type, facemgr_cfg_rule_t ** rule);
+
+/* Log */
+
+/*
+ * Query API
+ *
+ * Takes the overrides into account
+ *
+ * TODO : interface_types are currently not taken into account by this API
+ */
+
+int facemgr_cfg_get_face_type(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        facemgr_face_type_t * face_type);
+int facemgr_cfg_get_discovery(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * discovery);
+int facemgr_cfg_get_ignore(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * ignore);
+int facemgr_cfg_get_ipv4(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * ipv4);
+int facemgr_cfg_get_ipv6(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * ipv6);
+int facemgr_cfg_get_overlay_local_addr(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, ip_address_t * addr);
+int facemgr_cfg_get_overlay_local_port(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, u16 * port);
+int facemgr_cfg_get_overlay_remote_addr(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, ip_address_t * addr);
+int facemgr_cfg_get_overlay_remote_port(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, u16 * port);
+
+#endif /* FACEMGR_CFG_H */
diff --git a/ctrl/facemgr/src/util/log.h b/ctrl/facemgr/includes/hicn/util/log.h
index f1cafba47..f1cafba47 100644
--- a/ctrl/facemgr/src/util/log.h
+++ b/ctrl/facemgr/includes/hicn/util/log.h
diff --git a/ctrl/facemgr/src/CMakeLists.txt b/ctrl/facemgr/src/CMakeLists.txt
index e7dbda5c1..f99e57e07 100644
--- a/ctrl/facemgr/src/CMakeLists.txt
+++ b/ctrl/facemgr/src/CMakeLists.txt
@@ -20,40 +20,22 @@ set(COMPILER_DEFINITIONS
 )
 
 set(HEADER_FILES
-#cache.h
     common.h
     error.h
-    event.h
-    face.h
-    face_cache.h
-    face_rules.h
+    facelet.h
     interface.h
-    interface_map.h
-    interface_ops_map.h
     util/hash.h
-    util/ip_address.h
-    util/log.h
     util/map.h
-    util/policy.h
     util/set.h
-    util/token.h
-    util/types.h
-
 )
 
 set(SOURCE_FILES
-#   cache.c
+    api.c
+    cfg.c
     error.c
-    event.c
-    face.c
-    face_cache.c
-    face_rules.c
+    facelet.c
     interface.c
-    interface_map.c
-    interface_ops_map.c
-    facemgr.c
     util/log.c
-    util/policy.c
 )
 
 set(INCLUDE_DIRS
@@ -61,51 +43,82 @@ set(INCLUDE_DIRS
     ../includes/
     ${CONFIG_INCLUDE_DIR}
     ${LIBEVENT_INCLUDE_DIR}
+    ${HICN_INCLUDE_DIRS}
     ${LIBHICNCTRL_INCLUDE_DIRS}
 )
 
 set(LIBRARIES
     ${CONFIG_LIBRARY}
     ${LIBEVENT_LIBRARY}
+    ${HICN_LIBRARIES}
     ${LIBHICNCTRL_LIBRARIES}
 )
 
+
 add_subdirectory(interfaces)
 
-if (ANDROID_API)
-    build_library(${FACE_MGR}
+if(WITH_THREAD)
+    set(LIBRARIES
+        ${LIBRARIES}
+        "pthread"
+        "event_pthreads"
+    )
+    set(COMPILER_DEFINITIONS
+        ${COMPILER_DEFINITIONS}
+        "-DWITH_THREAD"
+    )
+endif()
+
+if(WITH_EXAMPLE_DUMMY)
+    set(COMPILER_DEFINITIONS
+        ${COMPILER_DEFINITIONS}
+        "-DWITH_EXAMPLE_DUMMY"
+    )
+endif()
+
+if(WITH_EXAMPLE_UPDOWN)
+    set(COMPILER_DEFINITIONS
+        ${COMPILER_DEFINITIONS}
+        "-DWITH_EXAMPLE_UPDOWN"
+    )
+endif()
+
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Android")
+    build_library(${LIBFACEMGR}
         STATIC
         SOURCES ${SOURCE_FILES}
         INSTALL_HEADERS ${TO_INSTALL_HEADER_FILES}
         DEPENDS ${DEPENDENCIES}
-        COMPONENT ${FACE_MGR}
+        LINK_LIBRARIES ${LIBRARIES}
+        COMPONENT ${FACEMGR}
         INCLUDE_DIRS ${INCLUDE_DIRS}
         INSTALL_ROOT_DIR hicn
         DEFINITIONS ${COMPILER_DEFINITIONS}
     )
 else ()
-    build_library(${FACE_MGR}
-        STATIC NO_DEV
+    build_library(${LIBFACEMGR}
+        SHARED STATIC NO_DEV
         SOURCES ${SOURCE_FILES}
         INSTALL_HEADERS ${TO_INSTALL_HEADER_FILES}
         DEPENDS ${DEPENDENCIES}
-        COMPONENT ${FACE_MGR}
+        LINK_LIBRARIES ${LIBRARIES}
+        COMPONENT ${FACEMGR}
         INCLUDE_DIRS ${INCLUDE_DIRS}
         INSTALL_ROOT_DIR hicn
         DEFINITIONS ${COMPILER_DEFINITIONS}
     )
 endif ()
 
-if(NOT ANDROID_API AND NOT COMPILE_FOR_IOS)
+if(NOT ${CMAKE_SYSTEM_NAME} STREQUAL "Android" AND NOT COMPILE_FOR_IOS)
     list(APPEND DAEMON_SRC
       main.c
     )
 
-    build_executable(${FACE_MGR}
+    build_executable(${FACEMGR}
       SOURCES ${DAEMON_SRC}
-      LINK_LIBRARIES ${FACE_MGR}.static ${LIBRARIES}
-      DEPENDS ${FACE_MGR}.static
-      COMPONENT ${FACE_MGR}
+      LINK_LIBRARIES ${LIBFACEMGR}.static ${LIBRARIES}
+      DEPENDS ${LIBFACEMGR}.static
+      COMPONENT ${FACEMGR}
       INCLUDE_DIRS ${INCLUDE_DIRS}
       DEFINITIONS ${COMPILER_DEFINITIONS}
     )
diff --git a/ctrl/facemgr/src/api.c b/ctrl/facemgr/src/api.c
new file mode 100644
index 000000000..f630792c4
--- /dev/null
+++ b/ctrl/facemgr/src/api.c
@@ -0,0 +1,1421 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file facemgr.c
+ * \brief Implementation of Face manager library interface
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <hicn/facemgr/api.h>
+#include <hicn/facemgr/cfg.h>
+#include <hicn/util/log.h>
+
+#ifdef __APPLE__
+#include "interfaces/network_framework/network_framework.h"
+#endif /* __APPLE__ */
+
+#ifdef __linux__
+#include "interfaces/bonjour/bonjour.h"
+#endif /* __linux__ */
+
+#ifdef __ANDROID__
+#include <hicn/android_utility/android_utility.h>
+#endif /* __ANDROID__ */
+
+#include <hicn/ctrl/face.h>
+#include "common.h"
+#include "facelet.h"
+#include "interface.h"
+#include "util/map.h"
+#include "util/set.h"
+
+#define RAND_NAME_LEN 5
+
+#define DEFAULT_PORT 9695
+
+typedef struct {
+    interface_t * interface;
+    void * event;
+} interface_map_data_t;
+
+TYPEDEF_SET_H(facelet_cache, facelet_t *);
+TYPEDEF_SET(facelet_cache, facelet_t *, facelet_cmp, facelet_snprintf);
+
+TYPEDEF_MAP_H(interface_map, const char *, interface_map_data_t *);
+TYPEDEF_MAP(interface_map, const char *, interface_map_data_t *, strcmp, string_snprintf, generic_snprintf);
+
+int int_cmp(int x, int y) { return x - y; }
+
+TYPEDEF_MAP_H(bonjour_map, netdevice_t *, interface_t *);
+TYPEDEF_MAP(bonjour_map, netdevice_t *, interface_t *, netdevice_cmp, generic_snprintf, generic_snprintf);
+
+/* TODO automatically register interfaces */
+
+#ifdef __APPLE__
+extern interface_ops_t network_framework_ops;
+#endif
+#ifdef __linux__
+extern interface_ops_t netlink_ops;
+extern interface_ops_t bonjour_ops;
+#endif
+#ifdef __ANDROID__
+extern interface_ops_t android_utility_ops;
+#endif /* __ANDROID__ */
+#ifdef WITH_EXAMPLE_DUMMY
+extern interface_ops_t dummy_ops;
+#endif
+#ifdef WITH_EXAMPLE_UPDOWN
+extern interface_ops_t updown_ops;
+#endif
+extern interface_ops_t hicn_light_ops;
+
+
+int
+facemgr_overlay_snprintf(char * s, size_t size, const facemgr_overlay_t * overlay)
+{
+    return -1;
+}
+
+struct facemgr_s {
+    /**************************************************/
+    /* Configuration parameters (exposed through API) */
+
+    facemgr_cfg_t * cfg;
+
+#ifdef __ANDROID__
+    /*
+     * Those two pointers are needed to call java functions from the face
+     * manager.
+     */
+    JavaVM *jvm;
+#endif /* __ANDROID__ */
+
+    /* Event loop support */
+    void * loop;
+    void * (*loop_register_fd)(void * loop, int fd, void * cb, void * cb_args);
+    int (*loop_unregister_event)(void * loop, void * event);
+
+    /****************************/
+    /* Internal data structures */
+
+    /* Map of interfaces index by name */
+    interface_map_t interface_map;
+
+    /* Faces under construction */
+    facelet_cache_t facelet_cache;
+
+    /********************************************************/
+    /* Interfaces - Those should be fully replaced by a map */
+
+    interface_t * hl;
+
+#ifdef __ANDROID__
+    interface_t * au; /* android_utility */
+#endif /* __ANDROID__ */
+
+#ifdef __APPLE__
+    interface_t * nf; /* network_framework */
+#endif /* __APPLE__ */
+
+#ifdef __linux__
+    interface_t * nl; /* netlink */
+
+    /*
+     * We maintain a map of dynamically created bonjour interfaces, one for each
+     * found netdevice
+     */
+    bonjour_map_t bonjour_map;
+#endif /* __linux__ */
+
+#ifdef WITH_EXAMPLE_DUMMY
+    interface_t * dummy;
+#endif
+#ifdef WITH_EXAMPLE_UPDOWN
+    interface_t * updown;
+#endif
+};
+
+int
+facemgr_initialize(facemgr_t * facemgr)
+{
+    int rc;
+
+    rc = interface_map_initialize(&facemgr->interface_map);
+    if (rc < 0)
+        goto ERR_INTERFACE_MAP;
+
+    rc = facelet_cache_initialize(&facemgr->facelet_cache);
+    if (rc < 0)
+        goto ERR_FACE_CACHE_PENDING;
+
+#ifdef __linux__
+    rc = bonjour_map_initialize(&facemgr->bonjour_map);
+    if (rc < 0)
+        goto ERR_BJ;
+#endif /* __linux */
+
+    facemgr->cfg = facemgr_cfg_create();
+    if (!facemgr->cfg)
+        goto ERR_CFG;
+
+    return 0;
+
+ERR_CFG:
+#ifdef __linux__
+    bonjour_map_finalize(&facemgr->bonjour_map);
+ERR_BJ:
+#endif /* __linux__ */
+    facelet_cache_finalize(&facemgr->facelet_cache);
+ERR_FACE_CACHE_PENDING:
+    interface_map_finalize(&facemgr->interface_map);
+ERR_INTERFACE_MAP:
+    return -1;
+}
+
+int
+facemgr_finalize(facemgr_t * facemgr)
+{
+    int rc;
+
+    /* TODO  Free all interfaces: pass free to map */
+
+    rc = interface_map_finalize(&facemgr->interface_map);
+    if (rc < 0)
+        goto ERR;
+
+    rc = facelet_cache_finalize(&facemgr->facelet_cache);
+    if (rc < 0)
+        goto ERR;
+
+#ifdef __linux__
+    rc = bonjour_map_finalize(&facemgr->bonjour_map);
+    if (rc < 0)
+        goto ERR;
+#endif /* __linux__ */
+
+    return 0;
+
+ERR:
+    return -1;
+}
+
+AUTOGENERATE_CREATE_FREE(facemgr);
+
+int
+facemgr_set_config(facemgr_t * facemgr, facemgr_cfg_t * cfg)
+{
+    if (facemgr->cfg) {
+        facemgr_cfg_free(facemgr->cfg);
+    }
+    facemgr->cfg = cfg;
+    return 0;
+}
+
+int facemgr_reset_config(facemgr_t * facemgr)
+{
+    assert(facemgr->cfg);
+    facemgr_cfg_free(facemgr->cfg);
+    facemgr->cfg = facemgr_cfg_create();
+    if (!facemgr->cfg)
+        return -1;
+    return 0;
+}
+
+facemgr_t *
+facemgr_create_with_config(facemgr_cfg_t * cfg)
+{
+    facemgr_t * facemgr = facemgr_create();
+    if (!facemgr)
+        return NULL;
+    int rc = facemgr_set_config(facemgr, cfg);
+    if (rc < 0) {
+        free(facemgr);
+        return NULL;
+    }
+    return facemgr;
+}
+
+int facemgr_on_event(facemgr_t * facemgr, facelet_t * facelet);
+
+int
+facemgr_create_interface(facemgr_t * facemgr, const char * name, const char * type, void * cfg, interface_t ** pinterface)
+{
+    int fd, rc;
+    void * event = NULL;
+    char rand_name[RAND_NAME_LEN+1];
+    interface_t * interface;
+
+    if (!name) {
+        /*
+         * We can manipulate the name on the stack as it will be strdup'ed by
+         * interface_create
+         */
+        rand_str(rand_name, RAND_NAME_LEN);
+        name = rand_name;
+    }
+
+    INFO("Creating interface %s [%s]...", name, type);
+    interface = interface_create(name, type);
+    if (!interface) {
+        ERROR("Error creating interface %s [%s]", name, type);
+        goto ERR_CREATE;
+    }
+    interface_set_callback(interface, facemgr_on_event, facemgr);
+
+    fd = interface_initialize(interface, cfg);
+    if (fd < 0)
+        goto ERR_INIT;
+    if (fd != 0) {
+        event = facemgr->loop_register_fd(facemgr->loop, fd, interface->ops->callback, interface);
+        if (event == NULL)
+            goto ERR_FD;
+    }
+
+    interface_map_data_t * interface_map_data = malloc(sizeof(interface_map_data_t));
+    if (!interface_map_data)
+        goto ERR_MAP_DATA;
+
+
+    *interface_map_data = (interface_map_data_t) {
+        .interface = interface,
+        .event = event,
+    };
+
+    rc = interface_map_add(&facemgr->interface_map, interface->name, interface_map_data);
+    if (rc < 0)
+        goto ERR_MAP_ADD;
+
+    DEBUG("Interface %s created successfully.", name);
+    if (pinterface)
+        *pinterface = interface;
+    return 0;
+
+ERR_MAP_ADD:
+    free(interface_map_data);
+ERR_MAP_DATA:
+    if (fd > 0)
+        facemgr->loop_unregister_event(facemgr->loop, interface_map_data->event);
+ERR_FD:
+    interface_finalize(interface);
+ERR_INIT:
+    interface_free(interface);
+ERR_CREATE:
+    if (pinterface)
+        *pinterface = NULL;
+    return -1;
+}
+
+int
+facemgr_delete_interface(facemgr_t * facemgr, interface_t * interface)
+{
+    int rc;
+
+    interface_map_data_t * interface_map_data = NULL;
+
+    DEBUG("Removing interface %s\n", interface->name);
+    rc = interface_map_remove(&facemgr->interface_map, interface->name, &interface_map_data);
+    if (rc < 0)
+        return -1;
+
+    if (!interface_map_data)
+        return -1;
+
+    free(interface_map_data);
+
+    rc = facemgr->loop_unregister_event(facemgr->loop, interface_map_data->event);
+    if (rc < 0)
+        return -1;
+
+
+    interface_finalize(interface);
+    interface_free(interface);
+
+    return 0;
+}
+
+#ifdef __linux__
+int facemgr_query_bonjour(facemgr_t * facemgr, netdevice_t * netdevice)
+{
+    interface_t * bj = NULL;
+
+    int rc = bonjour_map_get(&facemgr->bonjour_map, netdevice, &bj);
+    if (rc < 0)
+        return rc;
+
+    if (!bj) {
+        /* Create a new bonjour interface */
+        bonjour_cfg_t bj_cfg = {
+            .netdevice = *netdevice,
+        };
+        rc = facemgr_create_interface(facemgr, NULL, "bonjour", &bj_cfg, &bj);
+        if (rc < 0) {
+            ERROR("Error creating 'Bonjour' interface for '%s'\n", netdevice->name);
+            return -1;
+        }
+    }
+
+    DEBUG("sending event to bonjour interface");
+
+    /* Send an event to the interface (GET ?) */
+    return interface_on_event(bj, NULL);
+}
+#endif /* __linux__ */
+
+#ifdef __ANDROID__
+int facemgr_query_android_utility(facemgr_t * facemgr, netdevice_t netdevice)
+{
+    /* Send an event to the interface */
+    facelet_t * facelet = facelet_create();
+    if (!facelet)
+        goto ERR_MALLOC;
+
+    int rc = facelet_set_netdevice(facelet, netdevice);
+    if (rc < 0)
+        goto ERR_ND;
+
+    rc = interface_on_event(facemgr->au, facelet);
+    if (rc < 0)
+        goto ERR_EVENT;
+
+    return 0;
+
+ERR_EVENT:
+ERR_ND:
+    facelet_free(facelet);
+ERR_MALLOC:
+    return -1;
+}
+#endif /* __ANDROID__ */
+
+
+/**
+ * \brief Performs a cache lookup to find matching facelets
+ * \param [in] facelet_cache - Facelet cache on which to perform lookup
+ * \param [in] facelet - Facelet to lookup
+ * \param [out] cached_facelet - Pointer used to return a newly allocated
+ *      facelet array corresponding to the result of the cache lookup.
+ * \return The number of entries in the array in case of success (positive
+ *      value), or -1 in case of error.
+ */
+int
+facelet_cache_lookup(const facelet_cache_t * facelet_cache, facelet_t * facelet,
+        facelet_t ***cached_facelets)
+{
+    /*
+     * If the facelet is uniquely identified by its key, it is used to perform
+     * an efficient lookup directly...
+     */
+    if (facelet_has_key(facelet)) {
+        facelet_t * found = NULL;
+        if (facelet_cache_get(facelet_cache, facelet, &found) < 0) {
+            ERROR("[facelet_cache_lookup] Error during cache lookup");
+            return -1;
+        }
+        if (!found)
+            return 0;
+        *cached_facelets = malloc(sizeof(facelet_t*));
+        *cached_facelets[0] = found;
+        return 1;
+    }
+
+    /* ...otherwise, we iterate over the facelet
+     * cache to find matching elements.
+     */
+    facelet_t ** facelet_array;
+    int n = facelet_cache_get_array(facelet_cache, &facelet_array);
+    if (n < 0) {
+        ERROR("[facelet_cache_lookup] Error during cache match");
+        return -1;
+    }
+    *cached_facelets = malloc(n * sizeof(facelet_t*));
+
+    DEBUG("cache match n = %d", n);
+
+    int num_match = 0;
+    for (unsigned i = 0; i < n; i++) {
+        char buf[128];
+        facelet_snprintf(buf, 128, facelet_array[i]);
+        DEBUG("- facelet_array[%d] %s", i, buf);
+        facelet_snprintf(buf, 128, facelet);
+        DEBUG("  facelet %s", buf);
+
+        DEBUG("match ?");
+        if (!facelet_match(facelet_array[i], facelet)) {
+            DEBUG("no match");
+            continue;
+        }
+        DEBUG("match!");
+        (*cached_facelets)[num_match++] = facelet_array[i];
+    }
+    free(facelet_array);
+    DEBUG("return nummatch=%d", num_match);
+    return num_match;
+}
+
+
+/**
+ * \brief Checks whether the facelet satisfies face creation rules
+ * \param [in] facemgr - Pointer to the face manager instance
+ * \param [in] facelet - Pointer to the facelet to process
+ * \return 0 in case of success, -2 if we don't have enough information to
+ * decide, -3 if the face does not satisfy rules, and -1 in case of error
+ */
+int
+facemgr_facelet_satisfy_rules(facemgr_t * facemgr, facelet_t * facelet)
+{
+    /* As key, netdevice and family should always be present */
+    netdevice_t netdevice = NETDEVICE_EMPTY;
+    int rc = facelet_get_netdevice(facelet, &netdevice);
+    if (rc < 0) {
+        ERROR("[facemgr_facelet_satisfy_rules] Error retrieving netdevice from facelet");
+        return -1;
+    }
+
+    int family = AF_UNSPEC;
+    if (facelet_has_family(facelet)) {
+        if (facelet_get_family(facelet, &family) < 0) {
+            ERROR("[facemgr_facelet_satisfy_rules] Error retrieving family from facelet");
+            return -1;
+        }
+    }
+
+    netdevice_type_t netdevice_type = NETDEVICE_TYPE_UNDEFINED;
+#ifdef __ANDROID__
+    /*
+     * In addition to netdevice, netdevice_type should be present to correctly
+     * apply rules
+     */
+    rc = facelet_get_netdevice_type(facelet, &netdevice_type);
+    if (rc < 0) {
+        ERROR("[facemgr_facelet_satisfy_rules] Error retrieving netdevice_type from facelet");
+        return -2;
+    }
+#endif /* __ANDROID__ */
+
+    /* Ignore */
+    bool ignore;
+    if (facemgr_cfg_get_ignore(facemgr->cfg, &netdevice, netdevice_type,
+                &ignore) < 0)
+        return -1;
+    if (ignore) {
+        DEBUG("Ignored interface '%s/%s'...", netdevice.name,
+                netdevice_type_str[netdevice_type]);
+        return -3;
+    }
+
+    /* IPv4 */
+    bool ipv4;
+    if (facemgr_cfg_get_ipv4(facemgr->cfg, &netdevice, netdevice_type,
+                &ipv4) < 0)
+        return -1;
+    if (!ipv4) {
+        DEBUG("Ignored IPv4...");
+        return -3;
+    }
+
+    /* IPv6 */
+    bool ipv6;
+    if (facemgr_cfg_get_ipv6(facemgr->cfg, &netdevice, netdevice_type,
+                &ipv6) < 0)
+        return -1;
+    if (!ipv6) {
+        DEBUG("Ignored IPv6...");
+        return -3;
+    }
+
+    return 0;
+}
+
+#ifdef __ANDROID__
+/**
+ * \brief Complements facelet information through Android Utility interface
+ * \return 0 if request was successful, -1 in case of error, and -2 if the
+ *      interface is not applicable
+ *
+ * This function returnds _after_ completion.
+ */
+int
+facemgr_complement_facelet_au(facemgr_t * facemgr, facelet_t * facelet)
+{
+
+    if (facelet_has_netdevice_type(facelet))
+        return -2;
+
+    if (facelet_is_au_done(facelet))
+        return -2;
+
+    netdevice_t netdevice = NETDEVICE_EMPTY;
+    int rc = facelet_get_netdevice(facelet, &netdevice);
+    if (rc < 0) {
+        ERROR("[facemgr_complement_facelet_bj] Error retrieving netdevice from facelet");
+        return -1;
+    }
+
+    DEBUG("Querying android utility...");
+    facelet_set_au_done(facelet);
+
+    /* /!\ Synchronous code here /!\ */
+    if (facemgr_query_android_utility(facemgr, netdevice) < 0)
+        return -1;
+    return 0;
+}
+#endif /* __ANDROID__ */
+
+#ifdef __linux__
+/**
+ * \brief Complements facelet information through Bonjour interface.
+ * \return 0 if request was successful, -1 in case of error, and -2 if the
+ *      interface is not applicable
+ *
+ * This function returnds _before_ completion as bonjour querying is
+ * asynchronous.
+ */
+int
+facemgr_complement_facelet_bj(facemgr_t * facemgr, facelet_t * facelet)
+{
+    netdevice_t netdevice = NETDEVICE_EMPTY;
+    int rc = facelet_get_netdevice(facelet, &netdevice);
+    if (rc < 0) {
+        ERROR("[facemgr_complement_facelet_bj] Error retrieving netdevice from facelet");
+        return -1;
+    }
+
+    netdevice_type_t netdevice_type = NETDEVICE_TYPE_UNDEFINED;
+#ifdef __ANDROID__
+    /*
+     * In addition to netdevice, netdevice_type should be present to correctly
+     * apply rules
+     */
+    rc = facelet_get_netdevice_type(facelet, &netdevice_type);
+    if (rc < 0) {
+        ERROR("[facemgr_complement_facelet_bj] Error retrieving netdevice_type from facelet");
+        return -2;
+    }
+#endif /* __ANDROID__ */
+
+    bool discovery;
+    if (facemgr_cfg_get_discovery(facemgr->cfg, &netdevice, netdevice_type,
+                &discovery) < 0)
+        return -2;
+
+    DEBUG("Discovery: %s", discovery ? "ON" : "OFF");
+
+    if (!discovery)
+        return -2;
+
+    facemgr_face_type_t face_type = FACEMGR_FACE_TYPE_UNDEFINED;
+    if (facelet_get_face_type(facelet, &face_type) < 0) {
+        ERROR("[facemgr_complement_facelet_bj] Error retrieving face type from facelet");
+        return -1;
+    }
+
+    bool discovery_needed = (face_type.layer == FACE_TYPE_LAYER_4) &&
+        ((!facelet_has_remote_addr(facelet)) || (!facelet_has_remote_port(facelet)));
+
+    DEBUG("Discovery needed: %s", discovery ? "ON" : "OFF");
+
+    if (!discovery_needed) {
+        return -2;
+    }
+
+    if (!facelet_has_local_addr(facelet)) {
+        DEBUG("No discovery possible without local address");
+        return -2;
+    }
+
+    if (facelet_is_bj_done(facelet)) {
+        DEBUG("Bonjour already queried");
+        return -2;
+    }
+
+    facelet_set_bj_done(facelet);
+    return facemgr_query_bonjour(facemgr, &netdevice);
+}
+#endif /* __linux__ */
+
+/**
+ * \brief Complements facelet information through Manual settings.
+ * \return 0 if request was successful, -1 in case of error, and -2 if the
+ *      interface is not applicable
+ *
+ * This function returnds _before_ completion as bonjour querying is
+ * asynchronous.
+ */
+int
+facemgr_complement_facelet_manual(facemgr_t * facemgr, facelet_t * facelet)
+{
+
+    netdevice_t netdevice = NETDEVICE_EMPTY;
+    int rc = facelet_get_netdevice(facelet, &netdevice);
+    if (rc < 0) {
+        ERROR("[facemgr_complement_facelet_manual] Error retrieving netdevice from facelet");
+        return -1;
+    }
+
+    netdevice_type_t netdevice_type = NETDEVICE_TYPE_UNDEFINED;
+#ifdef __ANDROID__
+    /*
+     * In addition to netdevice, netdevice_type should be present to correctly
+     * apply rules
+     */
+    rc = facelet_get_netdevice_type(facelet, &netdevice_type);
+    if (rc < 0) {
+        ERROR("[facemgr_complement_facelet_manual] Error retrieving netdevice_type from facelet");
+        return -2;
+    }
+#endif /* __ANDROID__ */
+
+    int family = AF_UNSPEC;
+    if (facelet_has_family(facelet)) {
+        if (facelet_get_family(facelet, &family) < 0) {
+            ERROR("[facemgr_complement_facelet_manual] Error retrieving family from facelet");
+            return -1;
+        }
+    }
+
+    /* Do not query manual is there is a change to go through bonjour */
+    bool discovery;
+    if (facemgr_cfg_get_discovery(facemgr->cfg, &netdevice, netdevice_type,
+                &discovery) < 0)
+        return -2;
+
+    facemgr_face_type_t face_type = FACEMGR_FACE_TYPE_UNDEFINED;
+    if (facelet_get_face_type(facelet, &face_type) < 0) {
+        ERROR("[facemgr_complement_facelet_manual] Error retrieving face type from facelet");
+        return -1;
+    }
+
+    bool discovery_needed = (face_type.layer == FACE_TYPE_LAYER_4) &&
+        ((!facelet_has_remote_addr(facelet)) || (!facelet_has_remote_port(facelet)));
+
+    if (!discovery_needed) {
+        DEBUG("manual settings not considered as no discovery is needed");
+        return -2;
+    }
+
+    if (discovery && !facelet_is_bj_done(facelet)) {
+        DEBUG("manual settings not considered as discovery is enabled and Bonjour has not yet been done");
+        return -2;
+    }
+
+    DEBUG("Applying manual settings...");
+    /*
+     * Manual overlay specification (remote addr/port)
+     * We never override a result we have obtained through bonjour
+     */
+    if (!facelet_has_remote_addr(facelet)) {
+        ip_address_t remote_addr;
+        if (facemgr_cfg_get_overlay_remote_addr(facemgr->cfg,
+                &netdevice, netdevice_type, family, &remote_addr) < 0) {
+            ERROR("[facemgr_complement_facelet_manual] Error getting remote addr information from cfg");
+            return -1;
+        }
+        if (ip_address_empty(&remote_addr)) {
+            ERROR("[facemgr_complement_facelet_manual] Got empty remote addr information from cfg");
+        } else {
+            DEBUG(" - remote address");
+            facelet_set_remote_addr(facelet, remote_addr);
+        }
+    }
+
+    if (!facelet_has_remote_port(facelet)) {
+        uint16_t remote_port;
+        int rc = facemgr_cfg_get_overlay_remote_port(facemgr->cfg,
+                &netdevice, netdevice_type, family, &remote_port);
+        if (rc < 0) {
+            ERROR("[facemgr_complement_facelet_manual] Error getting remote port information from cfg");
+            return -1;
+        }
+        DEBUG(" - remote port");
+        facelet_set_remote_port(facelet, remote_port);
+    }
+
+    /*
+     * Complementing local addr/port XXX this should be done somewhere
+     * else : manual settings have the lowest priority
+     *
+     * Local IP address is specific as it allows to override the source
+     * address just before creating the face... we would need to check
+     * whether this is an address that belong to us... it might be used
+     * to arbitrate amongst several IP addresses instead...
+     */
+    ip_address_t local_addr;
+    if (facemgr_cfg_get_overlay_local_addr(facemgr->cfg, &netdevice,
+            netdevice_type, family, &local_addr) < 0) {
+        ERROR("[facemgr_complement_facelet_manual] Error getting local addr information from cfg");
+        return -1;
+    }
+    if (ip_address_empty(&local_addr)) {
+        ERROR("[facemgr_complement_facelet_manual] Got empty local addr information from cfg");
+    } else {
+        DEBUG(" - local addres");
+        facelet_set_local_addr(facelet, local_addr);
+    }
+
+    /* Sets a default local port, so far nobody sets it */
+    uint16_t local_port;
+    if (facemgr_cfg_get_overlay_local_port(facemgr->cfg,
+            &netdevice, netdevice_type, family, &local_port) < 0) {
+        ERROR("[facemgr_complement_facelet_manual] Error getting local port information from cfg");
+        return -1;
+    }
+    DEBUG(" - local port");
+    facelet_set_local_port(facelet, local_port);
+    return 0;
+}
+
+int
+facemgr_complement_facelet(facemgr_t * facemgr, facelet_t * facelet)
+{
+    int rc;
+
+    if (!facelet_has_key(facelet))
+        return -2;
+
+#ifdef __ANDROID__
+    rc = facemgr_complement_facelet_au(facemgr, facelet);
+    if (rc != -2)
+        return rc;
+#endif /* __ANDROID__ */
+
+    /* We continue only if the current call was not applicable. In the current
+     * setting we have no interface that can be requested in parallel, and no
+     * need to. This might evolve in future releases.
+     */
+
+#ifdef __linux__
+    rc = facemgr_complement_facelet_bj(facemgr, facelet);
+    if (rc != -2)
+        return rc;
+#endif /* __linux__ */
+
+    DEBUG("Complement manual");
+
+    rc = facemgr_complement_facelet_manual(facemgr, facelet);
+    if (rc != -2)
+        return rc;
+
+    INFO("[facemgr_complement_facelet] No more interfaces to query... incomplete face");
+    return 0;
+}
+
+/**
+ * \brief Process facelet CREATE event
+ * \param [in] facemgr - Pointer to the face manager instance
+ * \param [in] facelet - Pointer to the facelet event to process
+ * \return 0 if everything went correctly, or -1 in case of error.
+ */
+int
+facemgr_process_create(facemgr_t * facemgr, facelet_t * facelet)
+{
+    /*
+     * We create an interface locally, which does not means it should not exist
+     * remotely. Once such codepath is enabled, the two facelets will have been
+     * merged and we need to handle an eventual update on our side.
+     *
+     * In the same way, we need to check for the equivalence of face types etc.
+     */
+    int rc;
+
+    if (facelet_cache_add(&facemgr->facelet_cache, facelet) < 0) {
+        ERROR("[facemgr_process_create] Error adding facelet to cache");
+        return -1;
+    }
+    DEBUG("Facelet added to cache");
+
+    /*
+     * If the facelet does not satisfy filters, we do not lose any information
+     * but do not take any action to complement the face
+     */
+    rc = facemgr_facelet_satisfy_rules(facemgr, facelet);
+    if (rc == -3) {
+        /* Does not satisfy rules */
+        return 0;
+    }
+
+    // FIXME: we should complement a part of the facelet, so that we don't
+    // necessarily keep this information if we get more locally. Or at least we
+    // should remember that.
+    if (rc == -2) {
+        /*
+         * We don't have equivalent for linux right now, heuristic is only used
+         * at the end... might change.
+         */
+#ifdef __ANDROID__
+        /* Priority is given to information that complements a face */
+        if (facemgr_complement_facelet_au(facemgr, facelet) < 0) {
+            ERROR("[facemgr_process_create] Error while attempting to complement face for fields required by rule application");
+            return -1;
+        }
+        return 0;
+#endif /* __ANDROID__ */
+    }
+    if (rc < 0)
+        return -1;
+
+//    netdevice_t netdevice = NETDEVICE_EMPTY;
+//    if (facelet_get_netdevice(facelet, &netdevice) < 0) {
+//        ERROR("[facemgr_process_create] Error retrieving netdevice from facelet");
+//        return -1;
+//    }
+//
+//    netdevice_type_t netdevice_type = NETDEVICE_TYPE_UNDEFINED;
+//#ifdef __ANDROID__
+//    /*
+//     * In addition to netdevice, netdevice_type should be present to correctly
+//     * apply rules
+//     */
+//    if (facelet_get_netdevice_type(facelet, &netdevice_type) < 0) {
+//        ERROR("[facemgr_process_create] Error retrieving netdevice_type from facelet");
+//        return -2;
+//    }
+//#endif /* __ANDROID__ */
+
+
+    char facelet_s[MAXSZ_FACELET];
+    facelet_snprintf(facelet_s, MAXSZ_FACELET, facelet);
+    DEBUG("---[ FACELET CREATE : %s ] ---", facelet_s);
+
+    /* Do we have enough information about the facelet ? */
+    if (!facelet_validate_face(facelet)) {
+        if (facemgr_complement_facelet(facemgr, facelet) < 0) {
+            ERROR("[facemgr_process_create] Error while attempting to complement face for fields required by face creation");
+            return -1;
+        }
+        // we should not stop after complement_manual but create a face if
+        // possible... so we add a second validation
+    }
+
+    if (!facelet_validate_face(facelet))
+        return 0;
+
+    /*
+     * Is the forwarder connected, and has the facelet cache already sync'ed the
+     * remote faces ?
+     */
+    // TODO
+
+    /*
+     * Actually create the face on the forwarder
+     *
+     * FIXME Currently hicn-light is hardcoded
+     */
+    if (interface_on_event(facemgr->hl, facelet) < 0)
+        return -1;
+    facelet_set_status(facelet, FACELET_STATUS_CLEAN);
+    return 0;
+}
+
+/**
+ * \brief Process facelet GET event
+ * \param [in] facemgr - Pointer to the face manager instance
+ * \param [in] facelet - Pointer to the facelet event to process
+ * \return 0 if everything went correctly, or -1 in case of error.
+ */
+int
+facemgr_process_get(facemgr_t * facemgr, facelet_t * facelet)
+{
+    facelet_set_status(facelet, FACELET_STATUS_CLEAN);
+    if (facelet_has_netdevice(facelet)) {
+        netdevice_t netdevice;
+        if (facelet_get_netdevice(facelet, &netdevice) < 0)
+            return -1;
+        if (!IS_VALID_NETDEVICE(netdevice))
+            return 0;
+        return facelet_cache_add(&facemgr->facelet_cache, facelet);
+    }
+    return 0;
+}
+
+/**
+ * \brief Process facelet UPDATE event
+ * \param [in] facemgr - Pointer to the face manager instance
+ * \param [in] facelet - Pointer to the facelet event to process
+ * \return 0 if everything went correctly, or -1 in case of error.
+ */
+int
+facemgr_process_update(facemgr_t * facemgr, facelet_t * facelet)
+{
+    /* This is the most complex operation since we have the same problems as in
+     * CREATE + the need to manage changes...
+     *
+     * This might eventually trigger a face deletion...
+     */
+
+    /*
+     * Update in local does not mean the face should not be created remotely as
+     * it might be the first time we have enough information to create it
+     */
+
+    char facelet_s[MAXSZ_FACELET];
+    facelet_snprintf(facelet_s, MAXSZ_FACELET, facelet);
+    DEBUG("---[ FACELET UPDATE : %s ] ---", facelet_s);
+
+    /* Sets face type */
+    if (!facelet_has_face_type(facelet)) {
+
+        /* As key, netdevice and family should always be present */
+        netdevice_t netdevice = NETDEVICE_EMPTY;
+        int rc = facelet_get_netdevice(facelet, &netdevice);
+        if (rc < 0) {
+            ERROR("[facemgr_facelet_satisfy_rules] Error retrieving netdevice from facelet");
+            return -1;
+        }
+
+        netdevice_type_t netdevice_type = NETDEVICE_TYPE_UNDEFINED;
+#ifdef __ANDROID__
+        /*
+         * In addition to netdevice, netdevice_type should be present to correctly
+         * apply rules
+         */
+        rc = facelet_get_netdevice_type(facelet, &netdevice_type);
+        if (rc < 0) {
+            ERROR("[facemgr_facelet_satisfy_rules] Error retrieving netdevice_type from facelet");
+            return -2;
+        }
+#endif /* __ANDROID__ */
+
+        facemgr_face_type_t face_type = FACEMGR_FACE_TYPE_UNDEFINED;
+        if (facemgr_cfg_get_face_type(facemgr->cfg, &netdevice, netdevice_type, &face_type) < 0)
+            return rc;
+        facelet_set_face_type(facelet, face_type);
+    }
+
+    /* Process GET/UDPATE... */
+    switch(facelet_get_status(facelet)) {
+        case FACELET_STATUS_UNDEFINED:
+            ERROR("[facemgr_process_update] Unexpected facelet status");
+            return -1;
+
+        case FACELET_STATUS_DELETED:
+        case FACELET_STATUS_NEW:
+            /*
+             * If the remote action should be a CREATE, then we need to check
+             * whether we have enough information about the face...
+             */
+            if (!facelet_validate_face(facelet)) {
+                if (facemgr_complement_facelet(facemgr, facelet) < 0) {
+                    ERROR("[facemgr_process_update] Error while attempting to complement face for fields required by face creation");
+                    return -1;
+                }
+            }
+            if (!facelet_validate_face(facelet))
+                return 0;
+
+            facelet_set_event(facelet, FACELET_EVENT_CREATE);
+            interface_on_event(facemgr->hl, facelet);
+
+            /* This works assuming the call to hicn-light is blocking */
+            facelet_set_status(facelet, FACELET_STATUS_CLEAN);
+            break;
+
+        case FACELET_STATUS_CLEAN:
+            /* Nothing to do */
+            break;
+
+        case FACELET_STATUS_DIRTY:
+            /*
+             * For now we assume only local changes, and proceed to try and
+             * update the hICN forwarder.
+             *
+             * In case of update, the face exists which means we should already
+             * have enough information
+             */
+            if (!facelet_validate_face(facelet)) {
+                if (facemgr_complement_facelet(facemgr, facelet) < 0) {
+                    ERROR("[facemgr_process_create] Error while attempting to complement face for fields required by face creation");
+                    return -1;
+                }
+            }
+
+            if (!facelet_validate_face(facelet))
+                return 0;
+
+            facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+            if (interface_on_event(facemgr->hl, facelet) < 0)
+                return -1;
+
+            /* This works assuming the call to hicn-light is blocking and we
+             * have proceeded to all udpates */
+            facelet_set_status(facelet, FACELET_STATUS_CLEAN);
+            break;
+
+        case FACELET_STATUS_CONFLICT:
+            ERROR("[facemgr_process_update] Conflict resolution (not) yet implemented");
+            return -1;
+        case FACELET_STATUS_N:
+            ERROR("[facemgr_process_update] Facelet in error");
+            return -1;
+    }
+    return 0;
+}
+
+/**
+ * \brief Process facelet DELETE event
+ * \param [in] facemgr - Pointer to the face manager instance
+ * \param [in] facelet - Pointer to the facelet event to process
+ * \return 0 if everything went correctly, or -1 in case of error.
+ */
+int
+facemgr_process_delete(facemgr_t * facemgr, facelet_t * facelet)
+{
+    if (interface_on_event(facemgr->hl, facelet) < 0)
+        return -1;
+
+    facelet_set_status(facelet, FACELET_STATUS_DELETED);
+    //facelet_set_bj_done(facelet, false);
+
+    return 0;
+}
+
+/**
+ * \brief Process incoming events from interfaces
+ *
+ * Implementation notes:
+ *  - Any event or timeout due to an interface triggers either a local cache
+ *  update, as well a face operations needed to resync the state.
+ */
+int
+facemgr_on_event(facemgr_t * facemgr, facelet_t * facelet_in)
+{
+    int ret = 0;
+    assert(facelet_in);
+
+    char facelet_s[MAXSZ_FACELET];
+    facelet_snprintf(facelet_s, MAXSZ_FACELET, facelet_in);
+    DEBUG("----------------------------------");
+    DEBUG("EVENT %s\n", facelet_s);
+
+    facelet_t ** cached_facelets = NULL;
+    int n = facelet_cache_lookup(&facemgr->facelet_cache, facelet_in, &cached_facelets);
+    if (n < 0) {
+        ERROR("[facemgr_on_event] Error during cache lookup");
+        goto ERR;
+    }
+    DEBUG("num matches n=%d", n);
+    if (n == 0) {
+        /* This is a new facelet...  we expect a CREATE event. */
+        switch(facelet_get_event(facelet_in)) {
+            case FACELET_EVENT_CREATE:
+                if (facemgr_process_create(facemgr, facelet_in) < 0) {
+                    ERROR("[facemgr_process_cached_facelet] Error processing CREATE event");
+                    goto ERR;
+                }
+                break;
+
+            case FACELET_EVENT_GET:
+                /* Insert new facelet in cached */
+                if (facemgr_process_get(facemgr, facelet_in) < 0) {
+                    ERROR("[facemgr_process_cached_facelet] Error processing GET event");
+                    goto ERR;
+                }
+                break;
+
+            case FACELET_EVENT_UPDATE:
+                /* Might be because we previously ignored the facelet... */
+                //ERROR("[facemgr_on_event] Unexpected UPDATE... face does not exist");
+                //goto ERR;
+                INFO("Ignored UPDATE for non-existing face");
+                break;
+
+            case FACELET_EVENT_DELETE:
+                ERROR("[facemgr_on_event] Unexpected DELETE... face does not exist");
+                goto ERR;
+
+            case FACELET_EVENT_UNDEFINED:
+                ERROR("[facemgr_on_event] Unexpected UNDEFINED event.");
+                goto ERR;
+
+            default: /* XXX Some events should be deprecated */
+                ERROR("[facemgr_on_event] Deprecated event");
+                goto ERR;
+        }
+        goto DUMP_CACHE;
+    }
+
+    /*
+     * From now on, it should not make any difference whether we have one or
+     * more facelet.
+     */
+    for (unsigned i = 0; i < n; i ++) {
+        /*
+         * We merge each cached facelet with incoming one, and perform state
+         * reconciliation by sending appropriate updates to the forwarder
+         */
+        facelet_t * facelet = cached_facelets[i];
+        DEBUG("... match #%d", i);
+        switch(facelet_get_event(facelet_in)) {
+            case FACELET_EVENT_CREATE:
+                // FIXME, this might occur if the facemgr restarts and we try to
+                // re-create existing faces
+                ERROR("[facemgr_on_event] CREATE event for a face that already exists...");
+                ret = -1;
+                continue;
+
+            case FACELET_EVENT_GET: /* should be an INFORM message */
+                // FIXME, this might occur if the forwarder restarts and we
+                // resync faces...
+                ERROR("[facemgr_on_event] GET event for a face that already exists...");
+                ret = -1;
+                continue;
+
+            case FACELET_EVENT_UPDATE:
+                {
+                DEBUG("FACELET_EVENT_UPDATE");
+                char buf[128];
+                facelet_snprintf(buf, 128, facelet_in);
+                DEBUG("MERGE %s", buf);
+                facelet_snprintf(buf, 128, facelet);
+                DEBUG("   ON %s", buf);
+                }
+                if (facelet_merge(facelet, facelet_in) < 0) {
+                    ERROR("[facemgr_on_event] Error merging facelets");
+                    continue;
+                }
+                if (facemgr_process_update(facemgr, facelet) < 0) {
+                    ERROR("[facemgr_on_event] Error processing UPDATE event");
+                    ret = -1;
+                }
+                continue;
+
+            case FACELET_EVENT_DELETE:
+                if (facelet_merge(facelet, facelet_in) < 0) {
+                    ERROR("[facemgr_on_event] Error merging facelets");
+                    continue;
+                }
+                if (facemgr_process_delete(facemgr, facelet) < 0) {
+                        ERROR("[facemgr_on_event] Error processing DELETE event");
+                    ret = -1;
+                }
+                continue;
+
+            default: /* XXX Some events should be deprecated */
+                ERROR("[facemgr_on_event] Deprecated event");
+                ret = -1;
+        }
+
+    }
+    free(cached_facelets);
+    goto DUMP_CACHE;
+
+ERR:
+    ret = -1;
+
+DUMP_CACHE:
+    DEBUG("    <CACHE>");
+    facelet_cache_dump(&facemgr->facelet_cache);
+    DEBUG("    </CACHE>");
+    DEBUG("</EVENT ret=%d>", ret);
+    DEBUG("----------------------------------");
+    return ret;
+}
+
+int
+facemgr_bootstrap(facemgr_t * facemgr)
+{
+    int rc;
+
+    DEBUG("Registering interfaces...");
+    rc = interface_register(&hicn_light_ops);
+    if (rc < 0) {
+        ERROR("Could not register interfaces");
+        goto ERR_REGISTER;
+    }
+
+#ifdef __APPLE__
+    rc = interface_register(&network_framework_ops);
+    if (rc < 0)
+        goto ERR_REGISTER;
+#endif /* __APPLE__ */
+
+#ifdef __linux__
+    rc = interface_register(&netlink_ops);
+    if (rc < 0)
+        goto ERR_REGISTER;
+    rc = interface_register(&bonjour_ops);
+    if (rc < 0)
+        goto ERR_REGISTER;
+#endif /* __linux__ */
+
+#ifdef __ANDROID__
+    rc = interface_register(&android_utility_ops);
+    if (rc < 0)
+        goto ERR_REGISTER;
+#endif /* __ANDROID__ */
+
+#ifdef WITH_EXAMPLE_DUMMY
+    rc = interface_register(&dummy_ops);
+    if (rc < 0)
+        goto ERR_REGISTER;
+#endif
+
+#ifdef WITH_EXAMPLE_UPDOWN
+    rc = interface_register(&updown_ops);
+    if (rc < 0)
+        goto ERR_REGISTER;
+#endif
+
+    rc = facemgr_create_interface(facemgr, "hl", "hicn_light", NULL, &facemgr->hl);
+    if (rc < 0) {
+        ERROR("Error creating 'hICN forwarder (hicn-light)' interface\n");
+        goto ERR_HL_CREATE;
+    }
+
+#ifdef __APPLE__
+    network_framework_cfg_t nf_cfg = {
+        .rules = &facemgr->rules,
+    };
+    rc = facemgr_create_interface(facemgr, "nf", "network_framework", &nf_cfg, &facemgr->nf);
+    if (rc < 0) {
+        ERROR("Error creating 'Apple Network Framework' interface\n");
+        goto ERR_NF_CREATE;
+    }
+#endif /* __APPLE__ */
+
+#ifdef __linux__
+    rc = facemgr_create_interface(facemgr, "nl", "netlink", NULL, &facemgr->nl);
+    if (rc < 0) {
+        ERROR("Error creating 'Netlink' interface\n");
+        goto ERR_NL_CREATE;
+    }
+#endif /* __linux__ */
+
+#ifdef __ANDROID__
+    android_utility_cfg_t au_cfg = {
+        .jvm = facemgr->jvm,
+    };
+    rc = facemgr_create_interface(facemgr, "au", "android_utility", &au_cfg, &facemgr->au);
+    if (rc < 0) {
+        ERROR("Error creating 'Android Utility' interface\n");
+        goto ERR_AU_CREATE;
+    }
+#endif /* __ANDROID__ */
+
+#ifdef WITH_EXAMPLE_DUMMY
+    rc = facemgr_create_interface(facemgr, "dummy0", "dummy", NULL, &facemgr->dummy);
+    if (rc < 0) {
+        ERROR("Error creating 'dummy' interface\n");
+        goto ERR_DUMMY_CREATE;
+    }
+#endif
+
+#ifdef WITH_EXAMPLE_UPDOWN
+    rc = facemgr_create_interface(facemgr, "updown0", "updown", NULL, &facemgr->updown);
+    if (rc < 0) {
+        ERROR("Error creating 'updown' interface\n");
+        goto ERR_UPDOWN_CREATE;
+    }
+#endif
+
+    DEBUG("Facemgr successfully initialized...");
+
+    return 0;
+
+    /* FIXME facemgr_delete_interface */
+#ifdef WITH_EXAMPLE_UPDOWN
+    interface_free(facemgr->updown);
+ERR_UPDOWN_CREATE:
+#endif
+#ifdef WITH_EXAMPLE_DUMMY
+    interface_free(facemgr->dummy);
+ERR_DUMMY_CREATE:
+#endif
+#ifdef __ANDROID__
+    interface_free(facemgr->au);
+ERR_AU_CREATE:
+#endif /* __ANDROID__ */
+#ifdef __linux__
+    interface_free(facemgr->nl);
+ERR_NL_CREATE:
+#endif /* __linux__ */
+#ifdef __APPLE__
+    interface_free(facemgr->nf);
+ERR_NF_CREATE:
+#endif /* __APPLE__ */
+    interface_free(facemgr->hl);
+ERR_HL_CREATE:
+ERR_REGISTER:
+    return -1;
+}
+
+void facemgr_stop(facemgr_t * facemgr)
+{
+    // FIXME we should iterate on interface map
+
+#ifdef __APPLE__
+    facemgr_delete_interface(facemgr, facemgr->nf);
+#endif /* __APPLE__ */
+
+
+#ifdef __linux__
+    facemgr_delete_interface(facemgr, facemgr->nl);
+
+    /* Delete all bonjour interfaces */
+    interface_t ** bonjour_array;// = NULL; // NOTE: would allow avoiding tests
+    int n = bonjour_map_get_value_array(&facemgr->bonjour_map, &bonjour_array);
+    if (n > 0) {
+        netdevice_t ** netdevice_array; // = NULL;
+        int m = bonjour_map_get_key_array(&facemgr->bonjour_map, &netdevice_array);
+        if (m > 0) {
+            assert(m == n);
+            for (int i = 0; i < n; i++) { /* Fail silently */
+                DEBUG("Deleting bonjour interface associated to %s (%p)\n",
+                        netdevice_array[i]->name, bonjour_array[i]);
+                facemgr_delete_interface(facemgr, bonjour_array[i]);
+            }
+            free(netdevice_array);
+        }
+        free(bonjour_array);
+    }
+#endif /* __linux__ */
+
+#ifdef __ANDROID__
+    facemgr_delete_interface(facemgr, facemgr->au);
+#endif /* __ANDROID__ */
+
+    facemgr_delete_interface(facemgr, facemgr->hl);
+
+#ifdef WITH_EXAMPLE_DUMMY
+    facemgr_delete_interface(facemgr, facemgr->dummy);
+#endif
+
+#ifdef WITH_EXAMPLE_UPDOWN
+    facemgr_delete_interface(facemgr, facemgr->updown);
+#endif
+}
+
+#ifdef __ANDROID__
+void facemgr_set_jvm(facemgr_t * facemgr, JavaVM *jvm)
+{
+    facemgr->jvm = jvm;
+}
+#endif /* __ANDROID__ */
+
+void facemgr_set_event_loop_handler(facemgr_t * facemgr, void * loop, void * loop_register_fd, void * loop_unregister_event)
+{
+    facemgr->loop = loop;
+    facemgr->loop_register_fd = loop_register_fd;
+    facemgr->loop_unregister_event = loop_unregister_event;
+}
+
+void facemgr_list_faces(facemgr_t * facemgr, facemgr_list_faces_cb_t cb, void * user_data)
+{
+    //face_cache_iter(&facemgr->face_cache, cb, user_data);
+    facelet_cache_dump(&facemgr->facelet_cache);
+}
diff --git a/ctrl/facemgr/src/cfg.c b/ctrl/facemgr/src/cfg.c
new file mode 100644
index 000000000..6b04208bb
--- /dev/null
+++ b/ctrl/facemgr/src/cfg.c
@@ -0,0 +1,991 @@
+/**
+ * \file cfg.c
+ * \brief Implementation of Face manager configuration
+ */
+
+#include <assert.h>
+#include <hicn/ctrl.h> // HICN_DEFAULT_PORT
+#include <hicn/facemgr/cfg.h>
+#include <hicn/policy.h>
+#include <hicn/util/ip_address.h>
+#include "util/set.h"
+
+/* Overlay */
+
+typedef struct {
+    bool is_local_port;
+    uint16_t local_port;
+    bool is_local_addr;
+    ip_address_t local_addr;
+    bool is_remote_port;
+    uint16_t remote_port;
+    bool is_remote_addr;
+    ip_address_t remote_addr;
+} facemgr_cfg_overlay_t;
+
+int
+facemgr_cfg_overlay_initialize(facemgr_cfg_overlay_t * overlay)
+{
+    overlay->is_local_port = false;
+    overlay->local_port = 0;
+    overlay->is_local_addr = false;
+    overlay->local_addr = IP_ADDRESS_EMPTY;
+
+    overlay->is_remote_port = false;
+    overlay->remote_port = 0;
+    overlay->is_remote_addr = false;
+    overlay->remote_addr = IP_ADDRESS_EMPTY;
+
+    return 0;
+}
+
+int
+facemgr_cfg_overlay_finalize(facemgr_cfg_overlay_t * overlay)
+{
+    return 0;
+}
+
+facemgr_cfg_overlay_t * facemgr_cfg_overlay_create()
+{
+    facemgr_cfg_overlay_t * overlay = malloc(sizeof(facemgr_cfg_overlay_t));
+    if (!overlay)
+        return NULL;
+
+    int rc = facemgr_cfg_overlay_initialize(overlay);
+    if (rc < 0) {
+        free(overlay);
+        return NULL;
+    }
+
+    return overlay;
+}
+
+void facemgr_cfg_overlay_free(facemgr_cfg_overlay_t * overlay)
+{
+    facemgr_cfg_overlay_finalize(overlay);
+    free(overlay);
+}
+
+typedef struct {
+    facemgr_cfg_overlay_t * v4;
+    facemgr_cfg_overlay_t * v6;
+} facemgr_cfg_overlays_t;
+
+typedef struct {
+    const char * interface_name;
+    netdevice_type_t interface_type;
+} facemgr_cfg_match_t;
+
+
+typedef struct {
+    /* Interface specific */
+    bool is_face_type; // default is auto
+    facemgr_face_type_t face_type;
+
+    /* This should be defaut for the global settings */
+    bool is_ignore;
+    bool ignore;
+    bool is_discovery;
+    bool discovery;
+    bool is_ipv4;
+    bool ipv4;
+    bool is_ipv6;
+    bool ipv6;
+
+    facemgr_cfg_overlays_t overlays; // fallback unless discovery is disabled
+} facemgr_cfg_override_t;
+
+struct facemgr_cfg_rule_s {
+    facemgr_cfg_match_t match;
+    facemgr_cfg_override_t override;
+};
+
+int
+facemgr_cfg_override_initialize(facemgr_cfg_override_t * override)
+{
+    override->is_face_type = false;
+    override->face_type = FACEMGR_FACE_TYPE_UNDEFINED;
+
+    override->is_ignore = false;
+    override->ignore = false;
+
+    override->is_discovery = false;
+    override->discovery = false;
+
+    override->overlays.v4 = NULL;
+    override->overlays.v6 = NULL;
+
+    return 0;
+}
+
+int
+facemgr_cfg_override_finalize(facemgr_cfg_override_t * override)
+{
+    if (override->overlays.v4) {
+        facemgr_cfg_overlay_free(override->overlays.v4);
+        override->overlays.v4 = NULL;
+    }
+    if (override->overlays.v6) {
+        facemgr_cfg_overlay_free(override->overlays.v6);
+        override->overlays.v6 = NULL;
+    }
+
+    return 0;
+}
+
+
+/* Rule */
+facemgr_cfg_rule_t * facemgr_cfg_rule_create()
+{
+    facemgr_cfg_rule_t * rule = malloc(sizeof(facemgr_cfg_rule_t));
+    if (!rule)
+        return NULL;
+
+    int rc = facemgr_cfg_rule_initialize(rule);
+    if (rc < 0)
+        return NULL;
+
+    return rule;
+}
+
+void facemgr_cfg_rule_free(facemgr_cfg_rule_t * rule)
+{
+    facemgr_cfg_rule_finalize(rule);
+    free(rule);
+}
+
+int
+facemgr_cfg_rule_initialize(facemgr_cfg_rule_t * rule)
+{
+    rule->match.interface_name = NULL;
+    rule->match.interface_type = NETDEVICE_TYPE_UNDEFINED;
+
+    int rc = facemgr_cfg_override_initialize(&rule->override);
+    if (rc < 0)
+        return -1;
+
+    return 0;
+}
+
+int
+facemgr_cfg_rule_finalize(facemgr_cfg_rule_t * rule)
+{
+    if (rule->match.interface_name) {
+        free((void*)rule->match.interface_name);
+        rule->match.interface_name = NULL;
+    }
+    return facemgr_cfg_override_finalize(&rule->override);
+}
+
+void
+facemgr_cfg_rule_dump(facemgr_cfg_rule_t * rule)
+{
+    DEBUG("  <rule>");
+    DEBUG("    <match interface_name=%s interface_type=%s>",
+            rule->match.interface_name,
+            netdevice_type_str[rule->match.interface_type]);
+    DEBUG("    <override>");
+    if (rule->override.is_face_type) {
+        DEBUG("      <face_type>%d</face_type>", rule->override.face_type);
+    }
+    if (rule->override.is_ignore) {
+        DEBUG("      <ignore>%d</ignore>", rule->override.ignore);
+    }
+    if (rule->override.is_discovery) {
+        DEBUG("      <discovery>%d</discovery>", rule->override.discovery);
+    }
+    if (rule->override.is_ipv4) {
+        DEBUG("      <ipv4>%d</ipv4>", rule->override.ipv4);
+    }
+    if (rule->override.is_ipv6) {
+        DEBUG("      <ipv6>%d</ipv6>", rule->override.ipv6);
+    }
+    DEBUG("      <overlays>");
+    if (rule->override.overlays.v4) {
+        DEBUG("        <ipv4>");
+        if (rule->override.overlays.v4->is_local_addr) {
+            char buf[MAXSZ_IP_ADDRESS];
+            ip_address_snprintf(buf, MAXSZ_IP_ADDRESS,
+                    &rule->override.overlays.v4->local_addr, AF_INET);
+            DEBUG("          <local_addr>%s</local_addr>", buf);
+        }
+        if (rule->override.overlays.v4->is_local_port) {
+            DEBUG("          <local_port>%d</local_port>",
+                    rule->override.overlays.v4->local_port);
+        }
+        if (rule->override.overlays.v4->is_remote_addr) {
+            char buf[MAXSZ_IP_ADDRESS];
+            ip_address_snprintf(buf, MAXSZ_IP_ADDRESS,
+                    &rule->override.overlays.v4->remote_addr, AF_INET);
+            DEBUG("          <remote_addr>%s</remote_addr>", buf);
+        }
+        if (rule->override.overlays.v4->is_remote_port) {
+            DEBUG("          <remote_port>%d</remote_port>",
+                    rule->override.overlays.v4->remote_port);
+        }
+        DEBUG("        </ipv4>");
+    }
+    if (rule->override.overlays.v6) {
+        DEBUG("        <ipv6>");
+        if (rule->override.overlays.v6->is_local_addr) {
+            char buf[MAXSZ_IP_ADDRESS];
+            ip_address_snprintf(buf, MAXSZ_IP_ADDRESS,
+                    &rule->override.overlays.v6->local_addr, AF_INET6);
+            DEBUG("          <local_addr>%s</local_addr>", buf);
+        }
+        if (rule->override.overlays.v6->is_local_port) {
+            DEBUG("          <local_port>%d</local_port>",
+                    rule->override.overlays.v6->local_port);
+        }
+        if (rule->override.overlays.v6->is_remote_addr) {
+            char buf[MAXSZ_IP_ADDRESS];
+            ip_address_snprintf(buf, MAXSZ_IP_ADDRESS,
+                    &rule->override.overlays.v6->remote_addr, AF_INET6);
+            DEBUG("          <remote_addr>%s</remote_addr>", buf);
+        }
+        if (rule->override.overlays.v6->is_remote_port) {
+            DEBUG("          <remote_port>%d</remote_port>",
+                    rule->override.overlays.v6->remote_port);
+        }
+        DEBUG("        </ipv6>");
+    }
+    DEBUG("      </overlays>");
+    DEBUG("    </override>");
+    DEBUG("  </rule>");
+}
+
+int
+facemgr_cfg_rule_set_match(facemgr_cfg_rule_t * rule, const char * interface_name,
+        netdevice_type_t interface_type)
+{
+    rule->match.interface_name = interface_name ? strdup(interface_name) : NULL;
+    rule->match.interface_type = interface_type;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_set_face_type(facemgr_cfg_rule_t * rule, facemgr_face_type_t * face_type)
+{
+    rule->override.is_face_type = true;
+    rule->override.face_type = *face_type;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_unset_face_type(facemgr_cfg_rule_t * rule)
+{
+    rule->override.is_face_type = false;
+    rule->override.face_type = FACEMGR_FACE_TYPE_UNDEFINED; /* optional */
+    return 0;
+}
+
+int
+facemgr_cfg_rule_set_discovery(facemgr_cfg_rule_t * rule, bool status)
+{
+    rule->override.is_discovery = true;
+    rule->override.discovery = status;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_unset_discovery(facemgr_cfg_rule_t * rule)
+{
+    rule->override.is_discovery = false;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_set_ignore(facemgr_cfg_rule_t * rule, bool status)
+{
+    rule->override.is_ignore = true;
+    rule->override.ignore = status;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_unset_ignore(facemgr_cfg_rule_t * rule)
+{
+    rule->override.is_ignore = false;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_set_ipv4(facemgr_cfg_rule_t * rule, bool status)
+{
+    rule->override.is_ipv4 = true;
+    rule->override.ipv4 = status;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_unset_ipv4(facemgr_cfg_rule_t * rule)
+{
+    rule->override.is_ipv4 = false;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_set_ipv6(facemgr_cfg_rule_t * rule, bool status)
+{
+    rule->override.is_ipv6 = true;
+    rule->override.ipv6 = status;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_unset_ipv6(facemgr_cfg_rule_t * rule)
+{
+    rule->override.is_ipv6 = false;
+    return 0;
+}
+
+int
+facemgr_cfg_rule_set_overlay(facemgr_cfg_rule_t * rule, int family,
+    ip_address_t * local_addr, uint16_t local_port,
+    ip_address_t * remote_addr, uint16_t remote_port) {
+    if ((family != AF_INET) && (family != AF_INET6))
+        return -1;
+
+    facemgr_cfg_overlay_t * overlay = facemgr_cfg_overlay_create();
+    if (local_addr) {
+        overlay->is_local_addr = true;
+        overlay->local_addr = *local_addr;
+    }
+    if (IS_VALID_PORT(local_port)) {
+        overlay->is_local_port = true;
+        overlay->local_port = local_port;
+    }
+    if (remote_addr) {
+        overlay->is_remote_addr = true;
+        overlay->remote_addr = *remote_addr;
+    }
+    if (IS_VALID_PORT(remote_port)) {
+        overlay->is_remote_port = true;
+        overlay->remote_port = remote_port;
+    }
+
+    switch(family) {
+        case AF_INET:
+            rule->override.overlays.v4 = overlay;
+            break;
+
+        case AF_INET6:
+            rule->override.overlays.v6 = overlay;
+            break;
+
+        default:
+            return -1;
+    }
+
+    return 0;
+}
+
+int
+facemgr_rule_unset_overlay(facemgr_cfg_rule_t * rule, int family)
+{
+    if ((family != AF_INET) && (family != AF_INET6) && (family != AF_UNSPEC))
+        return -1;
+
+    if ((family == AF_UNSPEC) || (family == AF_INET)) {
+        if (rule->override.overlays.v4) {
+            facemgr_cfg_overlay_free(rule->override.overlays.v4);
+            rule->override.overlays.v4 = NULL;
+        }
+    }
+    if ((family == AF_UNSPEC) || (family == AF_INET6)) {
+        if (rule->override.overlays.v6) {
+            facemgr_cfg_overlay_free(rule->override.overlays.v6);
+            rule->override.overlays.v6 = NULL;
+        }
+    }
+    return 0;
+}
+
+int
+facemgr_cfg_rule_cmp(const facemgr_cfg_rule_t * r1, const facemgr_cfg_rule_t * r2)
+{
+    /*
+     * We implement a lexicographic order on the tuple (interface_name,
+     * interface_type)
+     */
+
+    /* We need to handle NULL cases out of strcmp */
+    if (!r1->match.interface_name) {
+        if (r2->match.interface_name)
+            return 1;
+        else
+            goto BOTH_NULL;
+    } else {
+        if (!r2->match.interface_name)
+            return -1;
+    }
+
+
+    /* Only if both are non-NULL, we proceed to strcmp */
+    int rc = strcmp(r1->match.interface_name, r2->match.interface_name);
+    if (rc != 0)
+        return rc;
+
+BOTH_NULL:
+    return r1->match.interface_type - r2->match.interface_type;
+}
+
+/* General */
+
+TYPEDEF_SET_H(facemgr_cfg_rule_set, facemgr_cfg_rule_t *);
+TYPEDEF_SET(facemgr_cfg_rule_set, facemgr_cfg_rule_t *, facemgr_cfg_rule_cmp, generic_snprintf);
+
+struct facemgr_cfg_s {
+    facemgr_cfg_override_t global;
+    facemgr_cfg_rule_set_t * rule_set;
+    //log_cfg_t log;
+};
+
+facemgr_cfg_t * facemgr_cfg_create()
+{
+    facemgr_cfg_t * cfg = malloc(sizeof(facemgr_cfg_t));
+    if (!cfg)
+        return NULL;
+
+    int rc = facemgr_cfg_initialize(cfg);
+    if (rc < 0) {
+        free(cfg);
+        return NULL;
+    }
+
+    return cfg;
+}
+
+void facemgr_cfg_free(facemgr_cfg_t * cfg)
+{
+    facemgr_cfg_finalize(cfg);
+    free(cfg);
+}
+
+int
+facemgr_cfg_initialize(facemgr_cfg_t * cfg)
+{
+    int rc = facemgr_cfg_override_initialize(&cfg->global);
+    if (rc < 0)
+        goto ERR_OVERRIDE;
+
+    cfg->rule_set = facemgr_cfg_rule_set_create();
+    if (!cfg->rule_set)
+        goto ERR_RULE_SET;
+
+    return 0;
+
+ERR_RULE_SET:
+    facemgr_cfg_override_finalize(&cfg->global);
+ERR_OVERRIDE:
+    return -1;
+}
+
+int
+facemgr_cfg_finalize(facemgr_cfg_t * cfg)
+{
+    /* TODO Free all rules */
+    facemgr_cfg_rule_set_free(cfg->rule_set);
+    return facemgr_cfg_override_finalize(&cfg->global);
+}
+
+void facemgr_cfg_dump(facemgr_cfg_t * cfg)
+{
+    return; /* NOT IMPLEMENTED */
+}
+
+/* General */
+int
+facemgr_cfg_set_face_type(facemgr_cfg_t * cfg, facemgr_face_type_t * face_type)
+{
+    cfg->global.is_face_type = true;
+    cfg->global.face_type = *face_type;
+    return 0;
+}
+
+int
+facemgr_cfg_unset_face_type(facemgr_cfg_t * cfg)
+{
+    cfg->global.is_face_type = false;
+    cfg->global.face_type = FACEMGR_FACE_TYPE_UNDEFINED; /* optional */
+    return 0;
+}
+
+int
+facemgr_cfg_set_discovery(facemgr_cfg_t * cfg, bool status)
+{
+    cfg->global.is_discovery = true;
+    cfg->global.discovery = status;
+    return 0;
+}
+
+int
+facemgr_cfg_unset_discovery(facemgr_cfg_t * cfg)
+{
+    cfg->global.is_discovery = false;
+    return 0;
+}
+
+int
+facemgr_cfg_set_overlay(facemgr_cfg_t * cfg, int family,
+    ip_address_t * local_addr, uint16_t local_port,
+    ip_address_t * remote_addr, uint16_t remote_port)
+{
+    if ((family != AF_INET) && (family != AF_INET6))
+        return -1;
+
+    facemgr_cfg_overlay_t * overlay = facemgr_cfg_overlay_create();
+    if (local_addr) {
+        overlay->is_local_addr = true;
+        overlay->local_addr = *local_addr;
+    }
+    if (IS_VALID_PORT(local_port)) {
+        overlay->is_local_port = true;
+        overlay->local_port = local_port;
+    }
+    if (remote_addr) {
+        overlay->is_remote_addr = true;
+        overlay->remote_addr = *remote_addr;
+    }
+    if (IS_VALID_PORT(remote_port)) {
+        overlay->is_remote_port = true;
+        overlay->remote_port = remote_port;
+    }
+
+    DEBUG("facemgr_cfg_set_overlay");
+
+    switch(family) {
+        case AF_INET:
+            cfg->global.overlays.v4 = overlay;
+            break;
+
+        case AF_INET6:
+            cfg->global.overlays.v6 = overlay;
+            break;
+
+        default:
+            return -1;
+    }
+
+    DEBUG("<global>");
+    DEBUG("  <overlay>");
+    if (overlay) {
+        DEBUG("    <ipv4>");
+        if (overlay->is_local_addr) {
+            char buf[MAXSZ_IP_ADDRESS];
+            ip_address_snprintf(buf, MAXSZ_IP_ADDRESS,
+                    &overlay->local_addr, AF_INET);
+            DEBUG("      <local_addr>%s</local_addr>", buf);
+        }
+        if (overlay->is_local_port) {
+            DEBUG("      <local_port>%d</local_port>",
+                    overlay->local_port);
+        }
+        if (overlay->is_remote_addr) {
+            char buf[MAXSZ_IP_ADDRESS];
+            ip_address_snprintf(buf, MAXSZ_IP_ADDRESS,
+                    &overlay->remote_addr, AF_INET);
+            DEBUG("      <remote_addr>%s</remote_addr>", buf);
+        }
+        if (overlay->is_remote_port) {
+            DEBUG("      <remote_port>%d</remote_port>",
+                    overlay->remote_port);
+        }
+        DEBUG("    </ipv4>");
+    }
+    DEBUG("  </overlay>");
+    DEBUG("</global>");
+
+    return 0;
+}
+
+int
+facemgr_cfg_unset_overlay(facemgr_cfg_t * cfg, int family)
+{
+    if ((family != AF_INET) && (family != AF_INET6) && (family != AF_UNSPEC))
+        return -1;
+
+    if ((family == AF_UNSPEC) || (family == AF_INET)) {
+        if (cfg->global.overlays.v4) {
+            facemgr_cfg_overlay_free(cfg->global.overlays.v4);
+            cfg->global.overlays.v4 = NULL;
+        }
+    }
+    if ((family == AF_UNSPEC) || (family == AF_INET6)) {
+        if (cfg->global.overlays.v6) {
+            facemgr_cfg_overlay_free(cfg->global.overlays.v6);
+            cfg->global.overlays.v6 = NULL;
+        }
+    }
+    return 0;
+}
+
+int
+facemgr_cfg_add_rule(facemgr_cfg_t * cfg, facemgr_cfg_rule_t * rule)
+{
+    facemgr_cfg_rule_dump(rule);
+    return facemgr_cfg_rule_set_add(cfg->rule_set, rule);
+}
+
+int
+facemgr_cfg_del_rule(facemgr_cfg_t * cfg, facemgr_cfg_rule_t * rule)
+{
+    return facemgr_cfg_rule_set_remove(cfg->rule_set, rule, NULL);
+}
+
+int facemgr_cfg_get_rule(const facemgr_cfg_t * cfg, const char * interface_name,
+        netdevice_type_t interface_type, facemgr_cfg_rule_t ** rule) {
+    facemgr_cfg_rule_t rule_search = {
+        .match = {
+            .interface_name = interface_name,
+            .interface_type = interface_type,
+        },
+    };
+    return facemgr_cfg_rule_set_get(cfg->rule_set, &rule_search, rule);
+}
+
+/* Query API */
+
+/*
+ * Check whether there are override rules for the given netdevice
+ *
+ * TODO:
+ *  - until we have proper indexes we loop through the whole structure
+ */
+int
+facemgr_cfg_get_override(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        facemgr_cfg_override_t ** override)
+{
+    if (!netdevice) {
+        *override = NULL;
+        return 0;
+    }
+
+    facemgr_cfg_rule_t **rule_array;
+    int rc = facemgr_cfg_rule_set_get_array(cfg->rule_set, &rule_array);
+    if (rc < 0) {
+        ERROR("facemgr_cfg_rule_set_get_array failed");
+        return rc;
+    }
+    for (unsigned i = 0; i < rc; i++) {
+        const char * interface_name = rule_array[i]->match.interface_name;
+        /* Check match for interface name */
+        if (interface_name && (strcmp(interface_name, netdevice->name) != 0))
+            continue;
+        /* Check match for interface type */
+        if (rule_array[i]->match.interface_type != NETDEVICE_TYPE_UNDEFINED) {
+#ifdef __ANDROID__
+            if (netdevice_type != rule_array[i]->match.interface_type)
+                continue;
+#else
+            ERROR("Match on interface type is currently not implemented");
+            goto ERR_ARRAY;
+#endif /* __ANDROID__ */
+        }
+        /* Found match... do we have an override for face_type */
+        DEBUG("override found nd=%s, ndt=%s", rule_array[i]->match.interface_name, netdevice_type_str[rule_array[i]->match.interface_type]);
+        *override = &rule_array[i]->override;
+        goto FOUND;
+    }
+
+    DEBUG("override not found");
+    *override = NULL;
+
+FOUND:
+    free(rule_array);
+    return 0;
+
+#ifndef __ANDROID__
+ERR_ARRAY:
+    free(rule_array);
+    return -1;
+#endif /* __ANDROID__ */
+}
+
+int
+facemgr_cfg_get_face_type(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        facemgr_face_type_t * face_type)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0) {
+        ERROR("get override failed");
+        return rc;
+    }
+
+    if ((override) && (override->is_face_type)) {
+        *face_type = override->face_type;
+        return 0;
+    }
+
+    *face_type = cfg->global.is_face_type
+        ? cfg->global.face_type
+        : FACEMGR_FACE_TYPE_DEFAULT;
+
+    return 0;
+}
+
+int
+facemgr_cfg_get_discovery(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * discovery)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    if ((override) && (override->is_discovery)) {
+        *discovery = override->discovery;
+        return 0;
+    }
+
+    *discovery = cfg->global.is_discovery
+        ? cfg->global.discovery
+        : FACEMGR_CFG_DEFAULT_DISCOVERY;
+    return 0;
+}
+
+int
+facemgr_cfg_get_ipv4(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * ipv4)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    if ((override) && (override->is_ipv4)) {
+        *ipv4 = override->ipv4;
+        return 0;
+    }
+
+    *ipv4 = cfg->global.is_ipv4
+        ? cfg->global.ipv4
+        : FACEMGR_CFG_DEFAULT_IPV4;
+    return 0;
+}
+
+int
+facemgr_cfg_get_ipv6(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * ipv6)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    if ((override) && (override->is_ipv6)) {
+        *ipv6 = override->ipv6;
+        return 0;
+    }
+
+    *ipv6 = cfg->global.is_ipv6
+        ? cfg->global.ipv6
+        : FACEMGR_CFG_DEFAULT_IPV6;
+    return 0;
+}
+
+int
+facemgr_cfg_get_ignore(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        bool * ignore)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    if ((override) && (override->is_ignore)) {
+        *ignore = override->ignore;
+        return 0;
+    }
+
+    assert (!cfg->global.is_ignore);
+
+    *ignore = (netdevice && (netdevice->name[0] != '\0') && strcmp(netdevice->name, "lo") == 0);
+
+    return 0;
+}
+
+int
+facemgr_cfg_get_overlay_local_addr(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, ip_address_t * addr)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    switch (family) {
+        case AF_INET:
+            if ((override) && (override->overlays.v4) && (override->overlays.v4->is_local_addr)) {
+                *addr = override->overlays.v4->local_addr;
+                return 0;
+            }
+            if ((cfg->global.overlays.v4) && (cfg->global.overlays.v4->is_local_addr)) {
+                *addr = cfg->global.overlays.v4->local_addr;
+                return 0;
+            }
+            break;
+        case AF_INET6:
+            if ((override) && (override->overlays.v6) && (override->overlays.v6->is_local_addr)) {
+                *addr = override->overlays.v6->local_addr;
+                return 0;
+            }
+            if ((cfg->global.overlays.v6) && (cfg->global.overlays.v6->is_local_addr)) {
+                *addr = cfg->global.overlays.v6->local_addr;
+                return 0;
+            }
+            break;
+        case AF_UNSPEC:
+            break;
+        default:
+            return -1;
+    }
+
+    *addr = IP_ADDRESS_EMPTY;
+    return 0;
+}
+
+int
+facemgr_cfg_get_overlay_local_port(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, u16 * port)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    switch (family) {
+        case AF_INET:
+            if ((override) && (override->overlays.v4) && (override->overlays.v4->is_local_port)) {
+                *port = override->overlays.v4->local_port;
+                return 0;
+            }
+            if ((cfg->global.overlays.v4) && (cfg->global.overlays.v4->is_local_port)) {
+                *port = cfg->global.overlays.v4->local_port;
+                return 0;
+            }
+            break;
+        case AF_INET6:
+            if ((override) && (override->overlays.v6) && (override->overlays.v6->is_local_port)) {
+                *port = override->overlays.v6->local_port;
+                return 0;
+            }
+            if ((cfg->global.overlays.v6) && (cfg->global.overlays.v6->is_local_port)) {
+                *port = cfg->global.overlays.v6->local_port;
+                return 0;
+            }
+            break;
+        case AF_UNSPEC:
+            break;
+        default:
+            return -1;
+    }
+
+    *port = HICN_DEFAULT_PORT;
+    return 0;
+}
+
+int
+facemgr_cfg_get_overlay_remote_addr(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, ip_address_t * addr)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    switch (family) {
+        case AF_INET:
+            if ((override) && (override->overlays.v4) && (override->overlays.v4->is_remote_addr)) {
+                DEBUG("remote addr v4 from override");
+                *addr = override->overlays.v4->remote_addr;
+                return 0;
+            }
+            if ((cfg->global.overlays.v4) && (cfg->global.overlays.v4->is_remote_addr)) {
+                DEBUG("remote addr v4 from global");
+                *addr = cfg->global.overlays.v4->remote_addr;
+                return 0;
+            }
+            break;
+        case AF_INET6:
+            if ((override) && (override->overlays.v6) && (override->overlays.v6->is_remote_addr)) {
+                DEBUG("remote addr v6 from override");
+                *addr = override->overlays.v6->remote_addr;
+                return 0;
+            }
+            if ((cfg->global.overlays.v6) && (cfg->global.overlays.v6->is_remote_addr)) {
+                DEBUG("remote addr v6 from global");
+                *addr = cfg->global.overlays.v6->remote_addr;
+                return 0;
+            }
+            break;
+        case AF_UNSPEC:
+            break;
+        default:
+            return -1;
+    }
+
+    DEBUG("remote addr empty");
+    *addr = IP_ADDRESS_EMPTY;
+    return 0;
+}
+
+int
+facemgr_cfg_get_overlay_remote_port(const facemgr_cfg_t * cfg,
+        const netdevice_t * netdevice, netdevice_type_t netdevice_type,
+        int family, u16 * port)
+{
+    facemgr_cfg_override_t * override;
+    int rc = facemgr_cfg_get_override(cfg, netdevice, netdevice_type,
+            &override);
+    if (rc < 0)
+        return rc;
+
+    switch (family) {
+        case AF_INET:
+            if ((override) && (override->overlays.v4) && (override->overlays.v4->is_remote_port)) {
+                *port = override->overlays.v4->remote_port;
+                return 0;
+            }
+            if ((cfg->global.overlays.v4) && (cfg->global.overlays.v4->is_remote_port)) {
+                *port = cfg->global.overlays.v4->remote_port;
+                return 0;
+            }
+            break;
+        case AF_INET6:
+            if ((override) && (override->overlays.v6) && (override->overlays.v6->is_remote_port)) {
+                *port = override->overlays.v6->remote_port;
+                return 0;
+            }
+            if ((cfg->global.overlays.v6) && (cfg->global.overlays.v6->is_remote_port)) {
+                *port = cfg->global.overlays.v6->remote_port;
+                return 0;
+            }
+            break;
+        case AF_UNSPEC:
+            break;
+        default:
+            return -1;
+    }
+
+    *port = HICN_DEFAULT_PORT;
+    return 0;
+}
diff --git a/ctrl/facemgr/src/common.h b/ctrl/facemgr/src/common.h
index a73964b6d..9d6e8ca87 100644
--- a/ctrl/facemgr/src/common.h
+++ b/ctrl/facemgr/src/common.h
@@ -22,18 +22,12 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdlib.h>
 
-#include "util/types.h"
-#include "util/ip_address.h"
-#include "util/token.h" // XXX debug
+#include <hicn/util/ip_address.h>
 
 //#define DEBUG
 
-/* Return value conventions */
-#define FACEMGR_SUCCESS 0
-#define FACEMGR_FAILURE -1
-#define FACEMGR_IS_ERROR(rc) (rc < 0)
-
 /* Useful types and macros for comparisons */
 typedef int(*cmp_t)(const void * x, const void * y);
 
@@ -43,18 +37,35 @@ typedef int(*cmp_t)(const void * x, const void * y);
 #define INDENT(n, fmt) "%*s" fmt, n, ""
 #define printfi(n, fmt, ...) printf(INDENT(n*4, fmt), ##__VA_ARGS__)
 
+#define _unused(x) ((void)(x))
+
+/* Random strings */
+
+static inline
+void rand_str(char *dest, size_t length) {
+    char charset[] = "0123456789"
+                     "abcdefghijklmnopqrstuvwxyz"
+                     "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+    while (length-- > 0) {
+        size_t index = (double) rand() / RAND_MAX * (sizeof charset - 1);
+        *dest++ = charset[index];
+    }
+    *dest = '\0';
+}
+
 /* Boilerplate code */
 
 #define NO_INITIALIZE(NAME)                                             \
 int                                                                     \
 NAME ## _initialize(NAME ## _t * obj) {                                 \
-    return FACEMGR_SUCCESS;                                             \
+    return 0;                                             \
 }
 
 #define NO_FINALIZE(NAME)                                               \
 int                                                                     \
 NAME ## _finalize(NAME ## _t * obj) {                                   \
-    return FACEMGR_SUCCESS;                                             \
+    return 0;                                             \
 }
 
 #define AUTOGENERATE_CREATE_FREE(NAME)                                  \
@@ -66,7 +77,7 @@ NAME ## _create()                                                       \
     if (!obj)                                                           \
         goto ERR_MALLOC;                                                \
                                                                         \
-    if (FACEMGR_IS_ERROR(NAME ## _initialize(obj)))                     \
+    if (NAME ## _initialize(obj) < 0)                                   \
         goto ERR_INIT;                                                  \
                                                                         \
     return obj;                                                         \
@@ -80,7 +91,7 @@ ERR_MALLOC:                                                             \
 void                                                                    \
 NAME ## _free(NAME ## _t * obj)                                         \
 {                                                                       \
-    if (FACEMGR_IS_ERROR(NAME ## _finalize(obj)))                       \
+    if (NAME ## _finalize(obj) < 0)                                     \
         (void)0; /* XXX */                                              \
     free(obj);                                                          \
 }                                                                       \
diff --git a/ctrl/facemgr/src/event.c b/ctrl/facemgr/src/event.c
deleted file mode 100644
index 446c51c22..000000000
--- a/ctrl/facemgr/src/event.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file event.h
- * \brief Implementatino of face events
- */
-
-#include "common.h"
-#include "event.h"
-#include "interface.h"
-#include "util/token.h"
-
-const char * event_type_str[] = {
-#define _(x) [EVENT_TYPE_ ## x] = STRINGIZE(x),
-foreach_event_type
-#undef _
-};
-
-int
-event_raise(event_type_t type, const face_t * face, const interface_t * interface)
-{
-    event_t event = { .type = type, .face = face };
-    if (interface->callback)
-        interface->callback(interface->callback_data, &event);
-    return FACEMGR_SUCCESS;
-}
diff --git a/ctrl/facemgr/src/event.h b/ctrl/facemgr/src/event.h
deleted file mode 100644
index 53295d009..000000000
--- a/ctrl/facemgr/src/event.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file event.h
- * \brief Face event
- */
-#ifndef FACEMGR_EVENT_H
-#define FACEMGR_EVENT_H
-
-#include "face.h"
-#include "interface.h"
-
-#define foreach_event_type      \
-    _(UNDEFINED)                \
-    _(CREATE)                   \
-    _(UPDATE)                   \
-    _(DELETE)                   \
-    _(SET_PARAMS)               \
-    _(SET_UP)                   \
-    _(SET_DOWN)                 \
-    _(SET_TAGS)                 \
-    _(CLEAR_TAGS)               \
-    _(ADD_TAG)                  \
-    _(REMOVE_TAG)               \
-    _(N)
-
-#define MAXSZ_EVENT_TYPE_ 10
-#define MAXSZ_EVENT_TYPE MAXSZ_EVENT_TYPE_ + 1
-
-typedef enum {
-#define _(x) EVENT_TYPE_ ## x,
-foreach_event_type
-#undef _
-} event_type_t;
-
-extern const char * event_type_str[];
-
-typedef struct event_s {
-    event_type_t type;
-    const face_t * face; /* + bitfield for face fields ? */
-} event_t;
-
-int
-event_raise(event_type_t type, const face_t * face, const interface_t * interface);
-
-#endif /* FACEMGR_EVENT_H */
diff --git a/ctrl/facemgr/src/face.c b/ctrl/facemgr/src/face.c
deleted file mode 100644
index 270a6fa9f..000000000
--- a/ctrl/facemgr/src/face.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file face.c
- * \brief Implementation of face abstraction
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "face.h"
-#include "util/hash.h"
-#include "util/token.h"
-
-#ifndef bzero
-#define bzero(b,len) (memset((b), '\0', (len)), (void) 0)
-#endif
-
-#define member_size(type, member) sizeof(((type *)0)->member)
-
-
-/* Netdevice */
-
-const char * netdevice_type_str[] = {
-#define _(x) [NETDEVICE_TYPE_ ## x] = STRINGIZE(x),
-foreach_netdevice_type
-#undef _
-};
-
-
-/* Face state */
-
-const char * face_state_str[] = {
-#define _(x) [FACE_STATE_ ## x] = STRINGIZE(x),
-foreach_face_state
-#undef _
-};
-
-
-/* Face type */
-
-const char * face_type_str[] = {
-#define _(x) [FACE_TYPE_ ## x] = STRINGIZE(x),
-foreach_face_type
-#undef _
-};
-
-
-/* Face */
-
-int
-face_initialize(face_t * face)
-{
-    bzero(face, sizeof(face_t)); /* 0'ed for hash */
-    return 1;
-}
-
-int
-face_initialize_udp(face_t * face, const ip_address_t * local_addr,
-        u16 local_port, const ip_address_t * remote_addr, u16 remote_port,
-        int family)
-{
-    if (!local_addr)
-        return -1;
-
-    *face = (face_t) {
-        .type = FACE_TYPE_UDP,
-        .params.tunnel = {
-            .family = family,
-            .local_addr = *local_addr,
-            .local_port = local_port,
-            .remote_addr = remote_addr ? *remote_addr : IP_ADDRESS_EMPTY,
-            .remote_port = remote_port,
-        },
-    };
-    return 1;
-}
-
-int
-face_initialize_udp_sa(face_t * face, const struct sockaddr * local_addr,
-        const struct sockaddr * remote_addr)
-{
-    if (!local_addr)
-        return -1;
-
-    if (remote_addr && (local_addr->sa_family != remote_addr->sa_family))
-        return -1;
-
-    switch (local_addr->sa_family) {
-        case AF_INET:
-            {
-            struct sockaddr_in *lsai = (struct sockaddr_in *)local_addr;
-            struct sockaddr_in *rsai = (struct sockaddr_in *)remote_addr;
-            *face = (face_t) {
-                .type = FACE_TYPE_UDP,
-                .params.tunnel = {
-                    .family = AF_INET,
-                    .local_addr.v4.as_inaddr = lsai->sin_addr,
-                    .local_port = lsai ? ntohs(lsai->sin_port) : 0,
-                    .remote_addr = IP_ADDRESS_EMPTY,
-                    .remote_port = rsai ? ntohs(rsai->sin_port) : 0,
-                },
-            };
-            if (rsai)
-                face->params.tunnel.remote_addr.v4.as_inaddr = rsai->sin_addr;
-            }
-            break;
-        case AF_INET6:
-            {
-            struct sockaddr_in6 *lsai = (struct sockaddr_in6 *)local_addr;
-            struct sockaddr_in6 *rsai = (struct sockaddr_in6 *)remote_addr;
-            *face = (face_t) {
-                .type = FACE_TYPE_UDP,
-                .params.tunnel = {
-                    .family = AF_INET6,
-                    .local_addr.v6.as_in6addr = lsai->sin6_addr,
-                    .local_port = lsai ? ntohs(lsai->sin6_port) : 0,
-                    .remote_addr = IP_ADDRESS_EMPTY,
-                    .remote_port = rsai ? ntohs(rsai->sin6_port) : 0,
-                },
-            };
-            if (rsai)
-                face->params.tunnel.remote_addr.v6.as_in6addr = rsai->sin6_addr;
-            }
-            break;
-        default:
-            return -1;
-    }
-    return 1;
-}
-
-face_t * face_create()
-{
-    face_t * face = calloc(1, sizeof(face_t)); /* 0'ed for hash */
-    return face;
-}
-
-face_t * face_create_udp(const ip_address_t * local_addr, u16 local_port,
-        const ip_address_t * remote_addr, u16 remote_port, int family)
-{
-    face_t * face = face_create();
-    if (face_initialize_udp(face, local_addr, local_port, remote_addr, remote_port, family) < 0)
-        goto ERR_INIT;
-    return face;
-
-ERR_INIT:
-    free(face);
-    return NULL;
-}
-
-face_t * face_create_udp_sa(const struct sockaddr * local_addr,
-        const struct sockaddr * remote_addr)
-{
-    face_t * face = face_create();
-    if (face_initialize_udp_sa(face, local_addr, remote_addr) < 0)
-        goto ERR_INIT;
-    return face;
-
-ERR_INIT:
-    free(face);
-    return NULL;
-}
-
-void face_free(face_t * face)
-{
-    free(face);
-}
-
-#define face_param_cmp(f1, f2, face_param_type)            \
-    memcmp(&f1->type, &f2->type,  \
-            member_size(face_params_t, face_param_type));
-
-/**
- * \brief Compare two faces
- * \param [in] f1 - First face
- * \param [in] f2 - Second face
- * \return whether faces are equal, ie both their types are parameters are
- * equal.
- *
- * NOTE: this function implements a partial order.
- */
-int
-face_cmp(const face_t * f1, const face_t * f2)
-{
-    if (f1->type != f2->type)
-        return false;
-
-    switch(f1->type) {
-        case FACE_TYPE_HICN:
-            return face_param_cmp(f1, f2, hicn);
-        case FACE_TYPE_TCP:
-        case FACE_TYPE_UDP:
-            return face_param_cmp(f1, f2, tunnel);
-        default:
-            return false;
-    }
-}
-
-hash_t
-face_hash(const face_t * face)
-{
-    /* Assuming the unused part of the struct is set to zero */
-    return hash_struct(face);
-}
-
-/* /!\ Please update constants in header file upon changes */
-size_t
-face_snprintf(char * s, size_t size, const face_t * face)
-{
-    switch(face->type) {
-        case FACE_TYPE_HICN:
-            return 0; // XXX Not implemented
-        case FACE_TYPE_TCP:
-        case FACE_TYPE_UDP:
-            {
-                char local[MAXSZ_IP_ADDRESS];
-                char remote[MAXSZ_IP_ADDRESS];
-                char tags[MAXSZ_POLICY_TAGS];
-
-                ip_address_snprintf(local, MAXSZ_IP_ADDRESS,
-                        &face->params.tunnel.local_addr,
-                        face->params.tunnel.family);
-                ip_address_snprintf(remote, MAXSZ_IP_ADDRESS,
-                        &face->params.tunnel.remote_addr,
-                        face->params.tunnel.family);
-                policy_tags_snprintf(tags, MAXSZ_POLICY_TAGS, face->tags);
-
-                return snprintf(s, size, "%s [%s:%d -> %s:%d] [%s]",
-                        face_type_str[face->type],
-                        local,
-                        face->params.tunnel.local_port,
-                        remote,
-                        face->params.tunnel.remote_port,
-                        tags);
-            }
-            break;
-        default:
-            return 0;
-    }
-
-}
-
-int
-face_set_tags(face_t * face, policy_tags_t tags)
-{
-    face->tags = tags;
-    return 1;
-}
diff --git a/ctrl/facemgr/src/face.h b/ctrl/facemgr/src/face.h
deleted file mode 100644
index 8b553f685..000000000
--- a/ctrl/facemgr/src/face.h
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file face.h
- * \brief Face abstraction
- */
-#ifndef HICN_FACE_H
-#define HICN_FACE_H
-
-#ifndef SPACES
-#define SPACES(x) x
-#endif
-#ifndef SPACE
-#define SPACE 1
-#endif
-#ifndef NULLTERM
-#define NULLTERM 1
-#endif
-
-#include "util/ip_address.h"
-#include "util/policy.h"
-#include "util/types.h"
-
-
-/* Netdevice type */
-
-#include <net/if.h> // IFNAMSIZ
-
-#define foreach_netdevice_type  \
-    _(UNDEFINED)                \
-    _(WIRED)                    \
-    _(WIFI)                     \
-    _(CELLULAR)                 \
-    _(VPN)                      \
-    _(N)
-
-#define MAXSZ_NETDEVICE_TYPE_ 9
-#define MAXSZ_NETDEVICE_TYPE MAXSZ_NETDEVICE_TYPE_ + NULLTERM
-
-typedef enum {
-#define _(x) NETDEVICE_TYPE_ ## x,
-foreach_netdevice_type
-#undef _
-} netdevice_type_t;
-
-extern const char * netdevice_type_str[];
-
-
-/* Netdevice */
-
-typedef struct {
-    u32 index;
-    char name[IFNAMSIZ];
-} netdevice_t;
-
-#define NETDEVICE_UNDEFINED_INDEX 0
-
-/* Face state */
-
-#define foreach_face_state      \
-    _(UNDEFINED)                \
-    _(PENDING_UP)               \
-    _(UP)                       \
-    _(PENDING_DOWN)             \
-    _(DOWN)                     \
-    _(ERROR)                    \
-    _(N)
-
-#define MAXSZ_FACE_STATE_ 12
-#define MAXSZ_FACE_STATE MAXSZ_FACE_STATE_ + 1
-
-typedef enum {
-#define _(x) FACE_STATE_ ## x,
-foreach_face_state
-#undef _
-} face_state_t;
-
-extern const char * face_state_str[];
-
-
-/* Face type */
-
-#define foreach_face_type       \
-    _(UNDEFINED)                \
-    _(HICN)                     \
-    _(HICN_LISTENER)            \
-    _(TCP)                      \
-    _(TCP_LISTENER)             \
-    _(UDP)                      \
-    _(UDP_LISTENER)             \
-    _(N)
-
-#define MAXSZ_FACE_TYPE_ 13
-#define MAXSZ_FACE_TYPE MAXSZ_FACE_TYPE_  + 1
-
-typedef enum {
-#define _(x) FACE_TYPE_ ## x,
-foreach_face_type
-#undef _
-} face_type_t;
-
-extern const char * face_type_str[];
-
-#define MAXSZ_FACE_ MAXSZ_FACE_TYPE_ + 2 * MAXSZ_IP_ADDRESS_ + 2 * MAXSZ_PORT_ + 9 + MAXSZ_POLICY_TAGS_
-#define MAXSZ_FACE MAXSZ_FACE_ + 1
-
-/* Face */
-
-typedef union {
-    int family; /* To access family independently of face type */
-    struct {
-        int family;
-        netdevice_t netdevice;
-        ip_address_t local_addr;
-        ip_address_t remote_addr;
-    } hicn;
-    struct {
-        int family;
-        ip_address_t local_addr;
-        u16 local_port;
-        ip_address_t remote_addr;
-        u16 remote_port;
-    } tunnel;
-} face_params_t;
-
-typedef struct {
-    face_type_t type;
-    face_params_t params;
-    face_state_t admin_state;
-    face_state_t state;
-#ifdef WITH_POLICY
-    policy_tags_t tags; /**< \see policy_tag_t */
-#endif /* WITH_POLICY */
-} face_t;
-
-int face_initialize(face_t * face);
-int face_initialize_udp(face_t * face, const ip_address_t * local_addr,
-        u16 local_port, const ip_address_t * remote_addr, u16 remote_port,
-        int family);
-int face_initialize_udp_sa(face_t * face,
-        const struct sockaddr * local_addr, const struct sockaddr * remote_addr);
-
-face_t * face_create();
-face_t * face_create_udp(const ip_address_t * local_addr, u16 local_port,
-        const ip_address_t * remote_addr, u16 remote_port, int family);
-face_t * face_create_udp_sa(const struct sockaddr * local_addr,
-        const struct sockaddr * remote_addr);
-
-int face_finalize(face_t * face);
-
-void face_free(face_t * face);
-
-typedef int (*face_cmp_t)(const face_t * f1, const face_t * f2);
-
-int face_cmp(const face_t * f1, const face_t * f2);
-hash_t face_hash(const face_t * face);
-
-size_t
-face_snprintf(char * s, size_t size, const face_t * face);
-
-int face_set_tags(face_t * face, policy_tags_t tags);
-
-#endif /* HICN_FACE_H */
-
diff --git a/ctrl/facemgr/src/face_cache.h b/ctrl/facemgr/src/face_cache.h
deleted file mode 100644
index caefb7e22..000000000
--- a/ctrl/facemgr/src/face_cache.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef FACE_CACHE_H
-#define FACE_CACHE_H
-
-#include "face.h"
-#include "util/set.h"
-
-TYPEDEF_SET_H(face_cache, face_t *);
-
-#endif /* FACE_CACHE_H */
diff --git a/ctrl/facemgr/src/face_rules.c b/ctrl/facemgr/src/face_rules.c
deleted file mode 100644
index ddefc15f9..000000000
--- a/ctrl/facemgr/src/face_rules.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "face_rules.h"
-
-#include <string.h>
-#include "util/policy.h"
-
-TYPEDEF_MAP(face_rules, const char *, policy_tags_t, strcmp, string_snprintf, policy_tags_snprintf);
diff --git a/ctrl/facemgr/src/facelet.c b/ctrl/facemgr/src/facelet.c
new file mode 100644
index 000000000..8a3074d2a
--- /dev/null
+++ b/ctrl/facemgr/src/facelet.c
@@ -0,0 +1,1008 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file facelet.c
+ * \brief Implementation of facelet
+ */
+
+#include <assert.h>
+#include <stdbool.h>
+#include <hicn/ctrl/face.h>
+#include <hicn/facemgr/cfg.h>
+#include <hicn/util/log.h>
+
+#include "facelet.h"
+
+const char * face_type_layer_str[] = {
+#define _(x) [FACE_TYPE_LAYER_ ## x] = STRINGIZE(x),
+    foreach_face_type_layer
+#undef _
+};
+
+const char * face_type_encap_str[] = {
+#define _(x) [FACE_TYPE_ENCAP_ ## x] = STRINGIZE(x),
+    foreach_face_type_encap
+#undef _
+};
+
+#define FACEMGR_FACE_TYPE_STR(x)                                \
+    face_type_layer_str[x.layer], face_type_encap_str[x.encap]
+
+
+const char * facelet_status_str[] = {
+#define _(x) [FACELET_STATUS_ ## x] = STRINGIZE(x),
+    foreach_facelet_status
+#undef _
+};
+
+/* Facelet attribute status */
+
+
+const char * facelet_attr_status_str[] = {
+#define _(x, str) [FACELET_ATTR_STATUS_ ## x] = STRINGIZE(x),
+    foreach_facelet_attr_status
+#undef _
+};
+
+const char * facelet_attr_status_str_short[] = {
+#define _(x, str) [FACELET_ATTR_STATUS_ ## x] = STRINGIZE(str),
+    foreach_facelet_attr_status
+#undef _
+};
+
+
+/* Facelet */
+
+struct facelet_s {
+#define _(TYPE, NAME) TYPE NAME;
+    foreach_facelet_attr
+#undef _
+#define _(TYPE, NAME) facelet_attr_status_t NAME ## _status;
+    foreach_facelet_attr
+#undef _
+
+    facelet_status_t status;
+    facelet_event_t event;
+
+    /* Joins */
+    bool bj_done;
+    bool au_done;
+    int num_pending;
+};
+
+const char * facelet_event_str[] = {
+#define _(x) [FACELET_EVENT_ ## x] = STRINGIZE(x),
+foreach_facelet_event
+#undef _
+};
+
+facelet_t *
+facelet_create()
+{
+    facelet_t * facelet = calloc(1, sizeof(facelet_t));
+    if (!facelet)
+        goto ERR_MALLOC;
+
+    facelet->netdevice_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->netdevice_type_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->family_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->local_addr_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->local_port_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->remote_addr_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->remote_port_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->admin_state_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->state_status = FACELET_ATTR_STATUS_UNSET;
+    facelet->face_type_status = FACELET_ATTR_STATUS_UNSET;
+
+    facelet->status = FACELET_STATUS_NEW;
+
+    facelet->bj_done = false;
+    facelet->au_done = false;
+    facelet->num_pending = 0;
+
+    facelet->event = FACELET_EVENT_UNDEFINED;
+
+    return facelet;
+
+ERR_MALLOC:
+    return NULL;
+}
+
+facelet_t *
+facelet_create_from_netdevice(netdevice_t * netdevice)
+{
+    facelet_t * facelet = facelet_create();
+    if (!facelet)
+        goto ERR_FACELET;
+
+    int rc = facelet_set_netdevice(facelet, *netdevice);
+    if (rc < 0)
+        goto ERR_NETDEV;
+
+    return facelet;
+
+ERR_NETDEV:
+    facelet_free(facelet);
+ERR_FACELET:
+    return NULL;
+}
+
+/**
+ * \brief Validate whether the facelet has all required fields to construct a
+ *      face of the given type
+ * \param [in) facelet - Pointer to the facelet to verify
+ * \return 0 in case of success, -1 otherwise
+ */
+int
+facelet_validate_face(const facelet_t * facelet)
+{
+    if (!facelet_has_face_type(facelet))
+        return false;
+    switch(facelet->face_type.layer) {
+        case FACE_TYPE_LAYER_4:
+            if (!facelet_has_remote_port(facelet))
+                return false;
+            if (!facelet_has_remote_addr(facelet))
+                return false;
+        case FACE_TYPE_LAYER_3:
+            if (!facelet_has_local_addr(facelet))
+                return false;
+            if (!facelet_has_netdevice(facelet))
+                return false;
+            return true;
+
+        default:
+            return false; /* Error */
+    }
+    // FIXME Not implemented
+    return 0;
+}
+
+
+netdevice_type_t
+netdevice_type_from_face_tags(const face_t * face)
+{
+    policy_tags_t tags = face->tags;
+    if (policy_tags_has(tags, POLICY_TAG_WIRED))
+        return NETDEVICE_TYPE_WIRED;
+    else if (policy_tags_has(tags, POLICY_TAG_WIFI))
+        return NETDEVICE_TYPE_WIFI;
+    else if (policy_tags_has(tags, POLICY_TAG_CELLULAR))
+        return NETDEVICE_TYPE_CELLULAR;
+    return NETDEVICE_TYPE_UNDEFINED;
+}
+
+facelet_t *
+facelet_create_from_face(face_t * face)
+{
+    facelet_t * facelet = malloc(sizeof(facelet_t));
+    if (!facelet)
+        goto ERR_MALLOC;
+
+    /* Go through the face attributes to update the local representation */
+
+    /* Attribute : netdevice */
+    /* NOTE index is not set */
+    if (IS_VALID_NETDEVICE(face->netdevice)) {
+        facelet->netdevice = face->netdevice;
+        facelet->netdevice_status = FACELET_ATTR_STATUS_CLEAN;
+    } else {
+        facelet->netdevice_status = FACELET_ATTR_STATUS_UNSET;
+    }
+
+    /* Attribute : netdevice_type */
+    facelet->netdevice_type = netdevice_type_from_face_tags(face);
+    if (facelet->netdevice_type != NETDEVICE_TYPE_UNDEFINED) {
+        facelet->netdevice_type_status = FACELET_ATTR_STATUS_CLEAN;
+    } else {
+        facelet->netdevice = NETDEVICE_EMPTY;
+        facelet->netdevice_type_status = FACELET_ATTR_STATUS_UNSET;
+    }
+
+    /* Attribute : family */
+    if (IS_VALID_FAMILY(face->family)) {
+        facelet->family = face->family;
+        facelet->family_status = FACELET_ATTR_STATUS_CLEAN;
+
+        /* Attribute : local_addr  */
+        if (ip_address_cmp(&face->local_addr, &IP_ADDRESS_EMPTY, face->family) != 0) {
+            facelet->local_addr = face->local_addr;
+            facelet->local_addr_status = FACELET_ATTR_STATUS_CLEAN;
+        } else {
+            facelet->local_addr_status = FACELET_ATTR_STATUS_UNSET;
+        }
+
+        /* Attribute : local_port  */
+        if (IS_VALID_PORT(face->local_port)) {
+            facelet->local_port = face->local_port;
+            facelet->local_port_status = FACELET_ATTR_STATUS_CLEAN;
+        } else {
+            facelet->local_port_status = FACELET_ATTR_STATUS_UNSET;
+        }
+
+        /* Attribute : remote_addr  */
+        if (ip_address_cmp(&face->remote_addr, &IP_ADDRESS_EMPTY, face->family) != 0) {
+            facelet->remote_addr = face->remote_addr;
+            facelet->remote_addr_status = FACELET_ATTR_STATUS_CLEAN;
+        } else {
+            facelet->remote_addr_status = FACELET_ATTR_STATUS_UNSET;
+        }
+
+        /* Attribute : remote_port  */
+        if (IS_VALID_PORT(face->remote_port)) {
+            facelet->remote_port = face->remote_port;
+            facelet->remote_port_status = FACELET_ATTR_STATUS_CLEAN;
+        } else {
+            facelet->remote_port_status = FACELET_ATTR_STATUS_UNSET;
+        }
+
+    } else {
+        facelet->family_status = FACELET_ATTR_STATUS_UNSET;
+        facelet->local_addr_status = FACELET_ATTR_STATUS_UNSET;
+        facelet->local_port_status = FACELET_ATTR_STATUS_UNSET;
+        facelet->remote_addr_status = FACELET_ATTR_STATUS_UNSET;
+        facelet->remote_port_status = FACELET_ATTR_STATUS_UNSET;
+    }
+
+    /* Attribute : admin_state */
+    if ((face->admin_state == FACE_STATE_UP) ||
+            (face->admin_state == FACE_STATE_DOWN)) {
+        facelet->admin_state = face->admin_state;
+        facelet->admin_state_status = FACELET_ATTR_STATUS_CLEAN;
+    } else {
+        facelet->admin_state_status = FACELET_ATTR_STATUS_UNSET;
+    }
+
+    /* Attribute : state */
+    if ((face->state == FACE_STATE_UP) ||
+            (face->state == FACE_STATE_DOWN)) {
+        facelet->state = face->state;
+        facelet->state_status = FACELET_ATTR_STATUS_CLEAN;
+    } else {
+        facelet->state_status = FACELET_ATTR_STATUS_UNSET;
+    }
+
+    /* Attribute : face_type */
+    if ((face->type != FACE_TYPE_UNDEFINED) && (face->type != FACE_TYPE_N)) {
+        switch(face->type) {
+            case FACE_TYPE_UDP:
+                facelet->face_type = FACEMGR_FACE_TYPE_OVERLAY_UDP;
+                break;
+            case FACE_TYPE_TCP:
+                facelet->face_type = FACEMGR_FACE_TYPE_OVERLAY_TCP;
+                break;
+            case FACE_TYPE_HICN:
+                facelet->face_type = FACEMGR_FACE_TYPE_NATIVE_TCP;
+                break;
+            default:
+                ERROR("[facelet_create_from_face] Face type not (yet) implemented");
+                goto ERR_FACE;
+        }
+        facelet->face_type_status = FACELET_ATTR_STATUS_CLEAN;
+    } else {
+        facelet->face_type_status = FACELET_ATTR_STATUS_UNSET;
+    }
+
+    /* Status */
+    facelet->status = FACELET_STATUS_CLEAN;
+
+    /* TODO Consistency check between face type and found attributes */
+    if (facelet_validate_face(facelet) < 0)
+        goto ERR_FACE;
+
+    facelet->bj_done = false;
+    facelet->au_done = false;
+    facelet->num_pending = 0;
+
+    facelet->event = FACELET_EVENT_UNDEFINED;
+
+    return facelet;
+
+ERR_FACE:
+    free(facelet);
+ERR_MALLOC:
+    return NULL;
+}
+
+
+void
+facelet_free(facelet_t * facelet)
+{
+    free(facelet);
+}
+
+facelet_t *
+facelet_dup(const facelet_t * current_facelet)
+{
+    facelet_t * facelet = facelet_create();
+    if (!facelet)
+        goto ERR_CREATE;
+
+#define _(TYPE, NAME) facelet-> NAME = current_facelet-> NAME;
+    foreach_facelet_attr
+#undef _
+#define _(TYPE, NAME) facelet-> NAME ## _status = current_facelet-> NAME ## _status;
+    foreach_facelet_attr
+#undef _
+
+    facelet->status = current_facelet->status;
+    facelet->event = current_facelet->event;
+
+    facelet->bj_done = current_facelet->bj_done;
+    facelet->au_done = current_facelet->au_done;
+    facelet->num_pending = current_facelet->num_pending;
+
+    return facelet;
+
+ERR_CREATE:
+    return NULL;
+}
+
+int
+facelet_cmp(const facelet_t * f1, const facelet_t * f2)
+{
+    /*
+     * Under the assumption we only create a face per physical interface, a
+     * facelet is uniquely identified by its netdevice attribute, and address
+     * family if any.
+     *
+     * This function is mostly used for lookups into the cache, and the face
+     * thus needs to have a netdevice associated, and optionally, an address
+     * family.
+     *
+     * For other situations, the `facelet_match` function is more appropriate.
+     */
+
+    if ((f1->netdevice_status != FACELET_ATTR_STATUS_UNSET) &&
+            (f2->netdevice_status != FACELET_ATTR_STATUS_UNSET)) {
+        int rc = netdevice_cmp(&f1->netdevice, &f2->netdevice);
+        if (rc != 0)
+            return rc;
+
+    } else {
+        /* Both unset : we might have the face without netdevice due to hicn
+         * light not returning it currently, but we cannot skip it in the match
+         * otherwise we cannot distinguish with other faces except matching on
+         * other fields which might unfortunately not be determined yet...
+         */
+        return (f1->netdevice_status == FACELET_ATTR_STATUS_UNSET) ? -1 : 1;
+    }
+
+    assert(f1->family_status != FACELET_ATTR_STATUS_UNSET);
+    assert(f2->family_status != FACELET_ATTR_STATUS_UNSET);
+
+    if ((f1->family == AF_UNSPEC) || (f2->family == AF_UNSPEC))
+        return 0;
+    int diff = f1->family - f2->family;
+    return (diff > 0) ? 1  :
+           (diff < 0) ? -1 : 0;
+}
+
+/*
+ * If the match has a field set, then the facelet only matches iif it has the
+ * same field set, and both values are equal
+ */
+#define MATCH_ATTRIBUTE(TYPE, NAME)                                             \
+do {                                                                            \
+    if (facelet_match->NAME ## _status == FACELET_ATTR_STATUS_CLEAN) {          \
+        if (facelet_has_ ## NAME(facelet_match)) {                              \
+            TYPE NAME;                                                          \
+            TYPE NAME ## _match;                                                \
+            if (!facelet_has_ ## NAME(facelet))                                 \
+                return false;                                                   \
+            if (facelet_get_ ## NAME (facelet, & NAME) < 0)                     \
+                return false;                                                   \
+            if (facelet_get_ ## NAME (facelet_match, & NAME ## _match) < 0)     \
+                return false;                                                   \
+            if (memcmp(& NAME, & NAME ## _match, sizeof(NAME)) != 0)            \
+                return false;                                                   \
+        }                                                                       \
+    }                                                                           \
+} while(0)
+
+/* facelet_match is the incoming one */
+bool
+facelet_match(const facelet_t * facelet, const facelet_t * facelet_match)
+{
+#define _(TYPE, NAME) MATCH_ATTRIBUTE(TYPE, NAME);
+    foreach_facelet_attr
+#undef _
+    return true;
+}
+
+bool facelet_has_key(const facelet_t * facelet) {
+    return (facelet_has_netdevice(facelet) && facelet_has_family(facelet));
+}
+
+/*
+ * Implementation note:
+ * - facelet_set_* is equivalent to merge with a CLEAN remote attribute
+ */
+#define FACELET_ACCESSORS(TYPE, NAME)                                           \
+bool                                                                            \
+facelet_has_ ## NAME(const facelet_t * facelet)                                 \
+{                                                                               \
+    assert(facelet);                                                            \
+    assert(facelet->NAME ## _status != FACELET_ATTR_STATUS_UNDEFINED);          \
+    assert(facelet->NAME ## _status != FACELET_ATTR_STATUS_N);                  \
+    return ((facelet-> NAME ## _status != FACELET_ATTR_STATUS_UNSET));          \
+}                                                                               \
+                                                                                \
+facelet_attr_status_t                                                           \
+facelet_get_ ## NAME ## _status(const facelet_t * facelet)                      \
+{                                                                               \
+    return (facelet->NAME ## _status);                                          \
+}                                                                               \
+                                                                                \
+int                                                                             \
+facelet_get_ ## NAME(const facelet_t * facelet, TYPE * NAME)                    \
+{                                                                               \
+    assert(facelet);                                                            \
+    if (!facelet_has_ ## NAME(facelet))                                         \
+        return -1;                                                              \
+    *NAME = facelet-> NAME;                                                     \
+    return 0;                                                                   \
+}                                                                               \
+                                                                                \
+int                                                                             \
+facelet_set_local_ ## NAME(facelet_t * facelet, TYPE NAME)                      \
+{                                                                               \
+    assert(facelet);                                                            \
+    switch(facelet->NAME ## _status) {                                          \
+        case FACELET_ATTR_STATUS_UNSET:                                         \
+        case FACELET_ATTR_STATUS_CLEAN:                                         \
+        case FACELET_ATTR_STATUS_DIRTY:                                         \
+        case FACELET_ATTR_STATUS_PENDING:                                       \
+            facelet-> NAME = NAME;                                              \
+            facelet->NAME ## _status = FACELET_ATTR_STATUS_DIRTY;               \
+            if (facelet->status == FACELET_STATUS_CLEAN)                        \
+                facelet->status = FACELET_STATUS_DIRTY;                         \
+            break;                                                              \
+        case FACELET_ATTR_STATUS_CONFLICT:                                      \
+            break;                                                              \
+        case FACELET_ATTR_STATUS_UNDEFINED:                                     \
+        case FACELET_ATTR_STATUS_N:                                             \
+            ERROR("Unexpected attribute status value");                         \
+            return -1;                                                          \
+    }                                                                           \
+    return 0;                                                                   \
+}                                                                               \
+                                                                                \
+int                                                                             \
+facelet_set_remote_ ## NAME(facelet_t * facelet, TYPE NAME)                     \
+{                                                                               \
+    assert(facelet);                                                            \
+    switch(facelet->NAME ## _status) {                                          \
+        case FACELET_ATTR_STATUS_UNSET:                                         \
+            facelet-> NAME = NAME;                                              \
+            facelet->NAME ## _status = FACELET_ATTR_STATUS_CLEAN;               \
+            break;                                                              \
+        case FACELET_ATTR_STATUS_CLEAN:                                         \
+            facelet->NAME = NAME;                                               \
+            break;                                                              \
+        case FACELET_ATTR_STATUS_DIRTY:                                         \
+            ERROR("Discarded remote value for status reasons");                 \
+            break;                                                              \
+        case FACELET_ATTR_STATUS_PENDING:                                       \
+            ERROR("Received remote value on pending attribute");                \
+            facelet->NAME ## _status = FACELET_ATTR_STATUS_CONFLICT;            \
+            if (facelet->status != FACELET_STATUS_CONFLICT)                     \
+                facelet->status = FACELET_STATUS_CONFLICT;                      \
+            break;                                                              \
+        case FACELET_ATTR_STATUS_CONFLICT:                                      \
+            return -1;                                                          \
+        case FACELET_ATTR_STATUS_UNDEFINED:                                     \
+        case FACELET_ATTR_STATUS_N:                                             \
+            ERROR("Unexpected attribute status value");                         \
+            return -1;                                                          \
+    }                                                                           \
+    return 0;                                                                   \
+}                                                                               \
+                                                                                \
+int                                                                             \
+facelet_set_ ## NAME(facelet_t * facelet, TYPE NAME)                            \
+{                                                                               \
+    return facelet_set_local_ ## NAME(facelet, NAME);                           \
+}                                                                               \
+                                                                                \
+
+#define _(TYPE, NAME) FACELET_ACCESSORS(TYPE, NAME)
+foreach_facelet_attr
+#undef _
+
+/*
+ * This function is called for every facelet attribute. It is responsible for
+ * comparing both the current and new value, and set the attribute and facelet
+ * status appropriately.
+ */
+
+// FIXME CLEAN for key fields, dirty for fields to update.
+
+#define MERGE_ATTRIBUTE(TYPE, NAME)                                                     \
+do {                                                                                    \
+    switch(facelet_to_merge->NAME ## _status) {                                         \
+        case FACELET_ATTR_STATUS_UNDEFINED:                                             \
+        case FACELET_ATTR_STATUS_N:                                                     \
+        case FACELET_ATTR_STATUS_PENDING:                                               \
+        case FACELET_ATTR_STATUS_CONFLICT:                                              \
+            ERROR("Unexpected facelet attribute status");                               \
+            return -1;                                                                  \
+        case FACELET_ATTR_STATUS_UNSET:                                                 \
+            break;                                                                      \
+        case FACELET_ATTR_STATUS_CLEAN:                                                 \
+        case FACELET_ATTR_STATUS_DIRTY:                                                 \
+            facelet_set_ ## NAME(facelet, facelet_to_merge-> NAME);                     \
+            break;                                                                      \
+    }                                                                                   \
+} while (0)
+
+int facelet_merge(facelet_t * facelet, const facelet_t * facelet_to_merge)
+{
+    assert(facelet && facelet_to_merge);
+#define _(TYPE, NAME) MERGE_ATTRIBUTE(TYPE, NAME);
+    foreach_facelet_attr
+#undef _
+    facelet->event = facelet_to_merge->event;
+    return 0;
+}
+
+#define MERGE_ATTRIBUTE_REMOTE(TYPE, NAME)                                              \
+do {                                                                                    \
+    switch(facelet_to_merge->NAME ## _status) {                                         \
+        case FACELET_ATTR_STATUS_UNDEFINED:                                             \
+        case FACELET_ATTR_STATUS_N:                                                     \
+        case FACELET_ATTR_STATUS_DIRTY:                                                 \
+        case FACELET_ATTR_STATUS_PENDING:                                               \
+        case FACELET_ATTR_STATUS_CONFLICT:                                              \
+            ERROR("Unexpected facelet attribute status");                               \
+            return -1;                                                                  \
+        case FACELET_ATTR_STATUS_UNSET:                                                 \
+            break;                                                                      \
+        case FACELET_ATTR_STATUS_CLEAN:                                                 \
+            facelet_set_ ## NAME(facelet, facelet_to_merge-> NAME);                     \
+            break;                                                                      \
+                                                                                        \
+    }                                                                                   \
+} while (0)
+
+int facelet_merge_remote(facelet_t * facelet, const facelet_t * facelet_to_merge)
+{
+    assert(facelet && facelet_to_merge);
+#define _(TYPE, NAME) MERGE_ATTRIBUTE_REMOTE(TYPE, NAME);
+    foreach_facelet_attr
+#undef _
+    facelet->event = facelet_to_merge->event;
+    return 0;
+}
+
+int
+facelet_get_face(const facelet_t * facelet, face_t ** pface)
+{
+    assert(pface);
+
+    /* Facelet has all the required information to create a face */
+    if (facelet_validate_face(facelet) < 0)
+        return 0;
+
+    face_t * face = face_create();
+    if (!face)
+        goto ERR_CREATE;
+
+    assert(facelet_has_netdevice(facelet));
+    face->netdevice = facelet->netdevice;
+
+    /* Face type */
+    switch(facelet->face_type.layer) {
+        case FACE_TYPE_LAYER_4:
+            switch(facelet->face_type.encap) {
+                case FACE_TYPE_ENCAP_UDP:
+                    face->type = FACE_TYPE_UDP;
+                    break;
+                case FACE_TYPE_ENCAP_TCP:
+                    face->type = FACE_TYPE_TCP;
+                    break;
+                case FACE_TYPE_ENCAP_UNDEFINED:
+                case FACE_TYPE_ENCAP_N:
+                    ERROR("[facelet_get_face] Unsupported face encapsulation");
+                    goto ERR;
+            }
+
+            if (facelet_get_family(facelet, &face->family) < 0)
+                goto ERR;
+            if (facelet_get_local_addr(facelet, &face->local_addr) < 0)
+                goto ERR;
+            if (facelet_get_local_port(facelet, &face->local_port) < 0)
+                goto ERR;
+            if (facelet_get_remote_addr(facelet, &face->remote_addr) < 0)
+                goto ERR;
+            if (facelet_get_remote_port(facelet, &face->remote_port) < 0)
+                goto ERR;
+            break;
+
+        case FACE_TYPE_LAYER_3:
+            ERROR("{facelet_get_face] hICN face not (yet) implemented");
+            goto ERR;
+
+        case FACE_TYPE_LAYER_UNDEFINED:
+        case FACE_TYPE_LAYER_N:
+            ERROR("[facelet_get_face] Unsupported face type");
+            goto ERR;
+    }
+
+    if (facelet_has_admin_state(facelet)) {
+        if (facelet_get_admin_state(facelet, &face->admin_state) < 0)
+            goto ERR;
+    } else {
+        face->admin_state = FACE_STATE_UP;
+    }
+
+    if (facelet_has_state(facelet)) {
+        if (facelet_get_state(facelet, &face->state) < 0)
+            goto ERR;
+    } else {
+        face->state = FACE_STATE_UP;
+    }
+
+    /* Tags */
+
+    /* - based on netdevice type */
+    policy_tags_t tags = POLICY_TAGS_EMPTY;
+    if (facelet_has_netdevice_type(facelet)) {
+        netdevice_type_t netdevice_type;
+        if (facelet_get_netdevice_type(facelet, &netdevice_type) < 0) {
+            ERROR("error getting netdevice_type");
+            goto ERR;
+        }
+
+
+        switch(netdevice_type) {
+            case NETDEVICE_TYPE_UNDEFINED:
+            case NETDEVICE_TYPE_LOOPBACK:
+                break;
+            case NETDEVICE_TYPE_WIRED:
+                policy_tags_add(&tags, POLICY_TAG_WIRED);
+                break;
+            case NETDEVICE_TYPE_WIFI:
+                policy_tags_add(&tags, POLICY_TAG_WIFI);
+                break;
+            case NETDEVICE_TYPE_CELLULAR:
+                policy_tags_add(&tags, POLICY_TAG_CELLULAR);
+                break;
+            default:
+                goto ERR;
+        }
+    }
+#ifdef __linux__
+#ifndef __ANDROID__
+    else {
+        /*
+         * Heuristics to determine face type based on name, until a better
+         * solution is found
+         */
+        if (strncmp(facelet->netdevice.name, "eth", 3) == 0) {
+            policy_tags_add(&tags, POLICY_TAG_WIRED);
+            goto DONE;
+        }
+        if (strncmp(facelet->netdevice.name, "en", 2) == 0) {
+            policy_tags_add(&tags, POLICY_TAG_WIRED);
+            goto DONE;
+        }
+        if (strncmp(facelet->netdevice.name, "wl", 2) == 0) {
+            /* wlan* wlp* wlx* */
+            policy_tags_add(&tags, POLICY_TAG_WIFI);
+            goto DONE;
+        }
+
+DONE:
+        ;
+    }
+#endif /* ! __ANDROID__ */
+#endif /* __linux__ */
+    face->tags = tags;
+
+    *pface = face;
+
+    return 0;
+
+ERR:
+    free(face);
+ERR_CREATE:
+    *pface = NULL;
+    return -1;
+}
+
+facelet_status_t
+facelet_get_status(const facelet_t * facelet)
+{
+    return facelet->status;
+}
+
+#define SET_ATTR_STATUS_CLEAN(TYPE, NAME)                                               \
+do {                                                                                    \
+    if (facelet->NAME ## _status  == FACELET_ATTR_STATUS_DIRTY)                         \
+        facelet->NAME ## _status = FACELET_ATTR_STATUS_CLEAN;                               \
+} while (0)
+
+void
+facelet_set_status(facelet_t * facelet, facelet_status_t status)
+{
+    if (status == FACELET_STATUS_CLEAN) {
+#define _(TYPE, NAME) SET_ATTR_STATUS_CLEAN(TYPE, NAME);
+    foreach_facelet_attr
+#undef _
+    }
+    facelet->status = status;
+}
+
+int
+facelet_add_pending(facelet_t * facelet)
+{
+    assert(facelet);
+    facelet->num_pending++;
+    return 0;
+}
+
+int
+facelet_remove_pending(facelet_t * facelet)
+{
+    assert(facelet);
+    if (facelet->num_pending == 0)
+        return -1;
+    facelet->num_pending--;
+    return 0;
+}
+
+bool
+facelet_has_pending(const facelet_t * facelet)
+{
+    assert(facelet);
+    DEBUG("num pending=%d\n", facelet->num_pending);
+    return (facelet->num_pending > 0);
+}
+
+void
+facelet_set_bj_done(facelet_t * facelet)
+{
+    facelet->bj_done = true;
+}
+
+bool
+facelet_is_bj_done(const facelet_t * facelet)
+{
+    return facelet->bj_done;
+}
+
+void
+facelet_set_au_done(facelet_t * facelet)
+{
+    facelet->au_done = true;
+}
+
+bool
+facelet_is_au_done(const facelet_t * facelet)
+{
+    return facelet->au_done;
+}
+
+facelet_event_t
+facelet_get_event(const facelet_t * facelet)
+{
+    return facelet->event;
+}
+
+void
+facelet_set_event(facelet_t * facelet, facelet_event_t event)
+{
+    facelet->event = event;
+}
+
+int
+facelet_raise_event(facelet_t * facelet, const interface_t * interface)
+{
+    if (interface->callback)
+        interface->callback(interface->callback_data, facelet);
+    return 0;
+}
+
+int
+facelet_snprintf(char * s, size_t size, facelet_t * facelet)
+{
+    char * cur = s;
+    int rc;
+
+    assert(facelet);
+
+    /* Header + key attributes (netdevice + family) */
+    rc = snprintf(cur, s + size - cur, "<Facelet %s (%s) [%d]",
+            // FIXME, better than the event would be the action to be performed next
+            facelet_event_str[facelet->event],
+            (facelet->family == AF_INET) ? "AF_INET" :
+            (facelet->family == AF_INET6) ? "AF_INET6" :
+            (facelet->family == AF_UNSPEC) ? "AF_UNSPEC" :
+            "unknown",
+            facelet->num_pending);
+    if (rc < 0)
+        return rc;
+    cur += rc;
+    if (size != 0 && cur >= s + size)
+        return cur - s;
+
+    /* Netdevice */
+    if (facelet_has_netdevice(facelet)) {
+        rc = snprintf(cur, s + size - cur, " netdevice=%s",
+                facelet->netdevice.name[0] ? facelet->netdevice.name : "*");
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+
+        rc = snprintf(cur, s + size - cur, "/%d", facelet->netdevice.index);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+
+    } else {
+        rc = snprintf(cur, s + size - cur, " netdevice=*/*");
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    /* Netdevice type */
+    if (facelet_has_netdevice_type(facelet)) {
+        rc = snprintf(cur, s + size - cur, " type=%s",
+                netdevice_type_str[facelet->netdevice_type]);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+#ifdef __linux__
+#ifndef __ANDROID__
+    else {
+        /*
+         * Heuristics to determine face type based on name, until a better
+         * solution is found
+         */
+        if ((strncmp(facelet->netdevice.name, "eth", 3) == 0) ||
+            (strncmp(facelet->netdevice.name, "en", 2) == 0)) {
+            rc = snprintf(cur, s + size - cur, " [type=WIRED]");
+            goto HEURISTIC_DONE;
+        }
+        if (strncmp(facelet->netdevice.name, "wl", 2) == 0) {
+            /* wlan* wlp* wlx* */
+            rc = snprintf(cur, s + size - cur, " [type=WIFI]");
+            goto HEURISTIC_DONE;
+        }
+        goto HEURISTIC_END;
+
+HEURISTIC_DONE:
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+HEURISTIC_END:
+        ;
+    }
+#endif /* ! __ANDROID__ */
+#endif /* __linux__ */
+
+    /* Local ip address */
+    if (facelet_has_local_addr(facelet)) {
+        rc = snprintf(cur, s + size - cur, " local_addr=");
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+
+        rc = ip_address_snprintf(cur, s + size - cur, &facelet->local_addr,
+                facelet->family);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    /* Local port */
+    if (facelet_has_local_port(facelet)) {
+        rc = snprintf(cur, s + size - cur, " local_port=%d",
+                facelet->local_port);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    /* Remote ip address */
+    if (facelet_has_remote_addr(facelet)) {
+        rc = snprintf(cur, s + size - cur, " remote_addr=");
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+
+        rc = ip_address_snprintf(cur, s + size - cur, &facelet->remote_addr,
+                facelet->family);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    /* Remote port */
+    if (facelet_has_remote_port(facelet)) {
+        rc = snprintf(cur, s + size - cur, " remote_port=%d",
+                facelet->remote_port);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    /* Admin state */
+    if (facelet_has_admin_state(facelet)) {
+        rc = snprintf(cur, s + size - cur, " admin_state=%s",
+                face_state_str[facelet->admin_state]);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    /* State */
+    if (facelet_has_state(facelet)) {
+        rc = snprintf(cur, s + size - cur, " state=%s",
+                face_state_str[facelet->state]);
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    if (facelet_has_face_type(facelet)) {
+        rc = snprintf(cur, s + size - cur, " face_type=IP%s/%s",
+            FACEMGR_FACE_TYPE_STR(facelet->face_type));
+        if (rc < 0)
+            return rc;
+        cur += rc;
+        if (size != 0 && cur >= s + size)
+            return cur - s;
+    }
+
+    rc = snprintf(cur, s + size - cur, ">");
+    if (rc < 0)
+        return rc;
+    cur += rc;
+    if (size != 0 && cur >= s + size)
+        return cur - s;
+
+    return cur - s;
+}
diff --git a/ctrl/facemgr/src/facelet.h b/ctrl/facemgr/src/facelet.h
new file mode 100644
index 000000000..fecee8641
--- /dev/null
+++ b/ctrl/facemgr/src/facelet.h
@@ -0,0 +1,198 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file facelet.h
+ * \brief Facelet
+ *
+ * A facelet consists in partial information and annotations collected towards
+ * the contruction of the final face that will be sent to the forwarder.
+ *
+ * It might also consist in a pattern allowing the deletion of a group of face
+ * for instance.
+ */
+#ifndef FACEMGR_FACELET_H
+#define FACEMGR_FACELET_H
+
+#include <stdbool.h>
+
+#include <hicn/ctrl/face.h>
+#include <hicn/facemgr.h>
+
+#include "interface.h"
+
+/* NOTE: Any test should be sufficient */
+#define IS_VALID_NETDEVICE(netdevice) ((netdevice.index != 0) && (netdevice.name[0] != '\0'))
+
+typedef struct facelet_s facelet_t;
+
+/* Facelet status */
+#define foreach_facelet_status  \
+    _(UNDEFINED)                \
+    _(NEW)                      \
+    _(CLEAN)                    \
+    _(DIRTY)                    \
+    _(CONFLICT)                 \
+    _(DELETED)                  \
+    _(N)
+
+typedef enum {
+#define _(x) FACELET_STATUS_ ## x,
+    foreach_facelet_status
+#undef _
+} facelet_status_t;
+
+extern const char * facelet_status_str[];
+
+/* Facelet attribute status */
+
+/*
+ * We expect an attribute in the cache to be able to take any value but
+ * UNDEFINED and N, which facelet events should either be UNSET or CLEAN
+ */
+#define foreach_facelet_attr_status             \
+    _(UNDEFINED, '?')                           \
+    _(UNSET, 'X')                               \
+    _(CLEAN, ' ')                               \
+    _(DIRTY, '*')                               \
+    _(PENDING, 'P')                             \
+    _(CONFLICT, '!')                            \
+    _(N, '-')
+
+typedef enum {
+#define _(x, y) FACELET_ATTR_STATUS_ ## x,
+    foreach_facelet_attr_status
+#undef _
+} facelet_attr_status_t;
+
+extern const char * facelet_attr_status_str[];
+extern const char * facelet_attr_status_str_short[];
+
+/* Facelet attribute */
+
+#define foreach_facelet_attr                    \
+    _(netdevice_type_t, netdevice_type)         \
+    _(netdevice_t, netdevice)                   \
+    _(int, family)                              \
+    _(ip_address_t, local_addr)                 \
+    _(u16, local_port)                          \
+    _(ip_address_t, remote_addr)                \
+    _(u16, remote_port)                         \
+    _(face_state_t, admin_state)                \
+    _(face_state_t, state)                      \
+    _(facemgr_face_type_t, face_type)
+
+#define foreach_facelet_event   \
+    _(UNDEFINED)                \
+    _(GET)                      \
+    _(CREATE)                   \
+    _(UPDATE)                   \
+    _(DELETE)                   \
+    _(SET_PARAMS)               \
+    _(SET_UP)                   \
+    _(SET_DOWN)                 \
+    _(SET_TAGS)                 \
+    _(CLEAR_TAGS)               \
+    _(ADD_TAG)                  \
+    _(REMOVE_TAG)               \
+    _(N)
+
+#define MAXSZ_EVENT__ 10
+#define MAXSZ_EVENT_ MAXSZ_EVENT_ + 1
+
+/**
+ * \brief Enumeration of the possible types of event
+ */
+typedef enum {
+#define _(x) FACELET_EVENT_ ## x,
+foreach_facelet_event
+#undef _
+} facelet_event_t;
+
+extern const char * facelet_event_str[];
+
+/**
+ * \brief Create a facelet.
+ */
+facelet_t * facelet_create();
+
+facelet_t * facelet_create_from_netdevice(netdevice_t * netdevice);
+
+int facelet_validate_face(const facelet_t * facelet);
+
+facelet_t * facelet_create_from_face(face_t * face);
+
+void facelet_free(facelet_t * facelet);
+
+facelet_t * facelet_dup(const facelet_t * current_facelet);
+
+int facelet_cmp(const facelet_t * f1, const facelet_t * f2);
+
+/* NOTE: only clean attributes are matched */
+bool facelet_match(const facelet_t * facelet, const facelet_t * facelet_match);
+
+/**
+ * \brief Returns whether the specified facelet has all key attributes defined.
+ *
+ * Key attributes are netdevice and family. If both are present, this allows to
+ * uniquely identify a facelet, otherwise it is a 'wildcard' facelet
+ * specification and might match several facelets.
+ */
+bool facelet_has_key(const facelet_t * facelet);
+
+
+#define FACELET_ACCESSORS_H(TYPE, NAME)                                         \
+bool facelet_has_ ## NAME(const facelet_t * facelet);                           \
+facelet_attr_status_t facelet_get_ ## NAME ## _status(const facelet_t * facelet);\
+int facelet_get_ ## NAME(const facelet_t * facelet, TYPE * NAME);               \
+int facelet_set_ ## NAME(facelet_t * facelet, TYPE NAME);
+
+#define _(TYPE, NAME) FACELET_ACCESSORS_H(TYPE, NAME)
+foreach_facelet_attr
+#undef _
+
+int facelet_get_face(const facelet_t * facelet, face_t ** pface);
+
+int facelet_merge(facelet_t * facelet, const facelet_t * facelet_to_merge);
+
+facelet_status_t facelet_get_status(const facelet_t * facelet);
+void facelet_set_status(facelet_t * facelet, facelet_status_t status);
+
+int facelet_add_pending(facelet_t * facelet);
+int facelet_remove_pending(facelet_t * facelet);
+bool facelet_has_pending(const facelet_t * facelet);
+
+void facelet_set_bj_done(facelet_t * facelet);
+bool facelet_is_bj_done(const facelet_t * facelet);
+void facelet_set_au_done(facelet_t * facelet);
+bool facelet_is_au_done(const facelet_t * facelet);
+
+facelet_event_t facelet_get_event(const facelet_t * facelet);
+void facelet_set_event(facelet_t * facelet, facelet_event_t event);
+
+/**
+ * \brief Create and raises an event to the face manager
+ * \param [in] event_type - Type of the event to create
+ * \param [in] facelet - Facelet to communicate with the event
+ * \param [in] interface - Interface that raised the event (or NULL if it was
+ *      created but the face manager itself, or is a joined event)
+ */
+int facelet_raise_event(facelet_t * facelet, const interface_t * interface);
+
+int facelet_snprintf(char * buf, size_t size, facelet_t * facelet);
+
+#define MAXSZ_FACELET 1024
+
+#endif /* FACEMGR_FACELET_H */
diff --git a/ctrl/facemgr/src/facemgr.c b/ctrl/facemgr/src/facemgr.c
deleted file mode 100644
index 41e30de56..000000000
--- a/ctrl/facemgr/src/facemgr.c
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file facemgr.c
- * \brief Implementation of Face manager library interface
- */
-
-#include <stdio.h>
-
-#include "common.h"
-#include "event.h"
-#include "facemgr.h"
-#include "interface.h"
-#include "util/log.h"
-
-#ifdef __APPLE__
-extern interface_ops_t network_framework_ops;
-#endif
-#ifdef __linux__
-extern interface_ops_t netlink_ops;
-#endif
-#if 0
-extern interface_ops_t dummy_ops;
-#endif
-extern interface_ops_t hicn_light_ops;
-
-int
-facemgr_initialize(facemgr_t * facemgr)
-{
-    int rc;
-
-    rc = interface_map_initialize(&facemgr->interface_map);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR_INTERFACE_MAP;
-
-    rc = face_cache_initialize(&facemgr->face_cache);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR_FACE_SET;
-
-    rc = face_rules_initialize(&facemgr->rules);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR_FACE_SET;
-
-    return FACEMGR_SUCCESS;
-
-ERR_FACE_SET:
-    interface_map_finalize(&facemgr->interface_map);
-
-ERR_INTERFACE_MAP:
-    return FACEMGR_FAILURE;
-}
-
-int
-facemgr_finalize(facemgr_t * facemgr)
-{
-    int rc;
-
-    /* XXX Free all interfaces: pass free to map */
-    rc = interface_map_finalize(&facemgr->interface_map);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR;
-
-    rc = face_cache_finalize(&facemgr->face_cache);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR;
-
-    rc = face_rules_finalize(&facemgr->rules);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR;
-
-    return FACEMGR_SUCCESS;
-
-ERR:
-    return FACEMGR_FAILURE;
-}
-
-AUTOGENERATE_CREATE_FREE(facemgr);
-
-int
-facemgr_on_event(facemgr_t * facemgr, event_t * event)
-{
-    int rc;
-    char face_s[MAXSZ_FACE];
-    face_t * cached_face;
-
-    if (!event->face) {
-        printf("Event with empty face\n");
-        return -1;
-    }
-
-    face_t face = *event->face;
-
-    /* Complement unbound UDP faces */
-    switch(face.type) {
-        case FACE_TYPE_TCP:
-        case FACE_TYPE_UDP:
-            switch (face.params.tunnel.family) {
-                case AF_INET:
-                    if ((ip_address_empty(&face.params.tunnel.remote_addr)) &&
-                            (!ip_address_empty(&facemgr->overlay_v4_remote_addr)))
-                        face.params.tunnel.remote_addr = facemgr->overlay_v4_remote_addr;
-                    if ((face.params.tunnel.local_port == 0) && (facemgr->overlay_v4_local_port != 0))
-                        face.params.tunnel.local_port = facemgr->overlay_v4_local_port;
-                    if ((face.params.tunnel.remote_port == 0) && (facemgr->overlay_v4_remote_port != 0))
-                        face.params.tunnel.remote_port = facemgr->overlay_v4_remote_port;
-                    break;
-                case AF_INET6:
-                    if ((ip_address_empty(&face.params.tunnel.remote_addr)) &&
-                            (!ip_address_empty(&facemgr->overlay_v6_remote_addr)))
-                        face.params.tunnel.remote_addr = facemgr->overlay_v6_remote_addr;
-                    if ((face.params.tunnel.local_port == 0) && (facemgr->overlay_v6_local_port != 0))
-                        face.params.tunnel.local_port = facemgr->overlay_v6_local_port;
-                    if ((face.params.tunnel.remote_port == 0) && (facemgr->overlay_v6_remote_port != 0))
-                        face.params.tunnel.remote_port = facemgr->overlay_v6_remote_port;
-                default:
-                    break;
-            }
-            break;
-        default:
-            break;
-    }
-
-    face_snprintf(face_s, MAXSZ_FACE, &face);
-
-    /* TODO Here, we need to filter events based on our cache, and update the cache
-     * based on our actions if they are successful */
-
-    switch(event->type) {
-        case EVENT_TYPE_CREATE:
-            rc = face_cache_get(&facemgr->face_cache, &face, &cached_face);
-            if (!FACEMGR_IS_ERROR(rc)) {
-                DEBUG("Face found in cache");
-                goto IGNORE_EVENT;
-            }
-            rc = face_cache_add(&facemgr->face_cache, &face);
-            if (FACEMGR_IS_ERROR(rc))
-                WARN("Failed to add face to cache");
-            break;
-        case EVENT_TYPE_DELETE:
-            rc = face_cache_remove(&facemgr->face_cache, &face, &cached_face);
-            if (FACEMGR_IS_ERROR(rc))
-                WARN("Face not found in cache");
-            break;
-        case EVENT_TYPE_SET_UP:
-        case EVENT_TYPE_SET_DOWN:
-            /* TODO We need a return code to update the cache */
-            break;
-        default:
-            printf("Not implemented!\n");
-            break;
-    }
-
-    /* Process event */
-    printf("[ FACE %s ] %s\n", event_type_str[event->type], face_s);
-    /* Hardcoded hicn-light */
-    rc = interface_on_event(facemgr->hl, event);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR;
-
-IGNORE_EVENT:
-    return FACEMGR_SUCCESS;
-
-ERR:
-    return FACEMGR_FAILURE;
-}
-
-#ifdef __linux__
-void interface_callback(evutil_socket_t fd, short what, void * arg) {
-    interface_t * interface = (interface_t *)arg;
-    interface->ops->callback(interface);
-}
-#endif /* __linux__ */
-
-int
-facemgr_create_interface(facemgr_t * facemgr, const char * name, const char * type, interface_t ** interface)
-{
-    int fd, rc;
-
-    INFO("Creating interface %s [%s]...\n", name, type);
-    *interface = interface_create(name, type);
-    if (!*interface) {
-        ERROR("Error creating interface %s [%s]\n", name, type);
-        return -1;
-    }
-    interface_set_callback(*interface, facemgr_on_event, facemgr);
-
-    fd = interface_initialize(*interface, &facemgr->rules);
-    if (fd < 0)
-        return -2;
-    if (fd != 0) {
-#ifdef __linux__
-        evutil_make_socket_nonblocking(fd);
-        struct event * event = event_new(facemgr->loop, fd, EV_READ | EV_PERSIST, interface_callback, *interface);
-        if (!event) {
-            return -3;
-        }
-
-        if (event_add(event, NULL) < 0) {
-            return -4;
-        }
-#else
-        ERROR("Not implemented\n");
-        return FACEMGR_FAILURE;
-#endif /* __linux__ */
-    }
-
-    rc = interface_map_add(&facemgr->interface_map, (*interface)->name, *interface);
-    if (FACEMGR_IS_ERROR(rc))
-        return -5;
-
-    DEBUG("Interface created successfully.\n");
-    return FACEMGR_SUCCESS;
-}
-
-int
-facemgr_bootstrap(facemgr_t * facemgr)
-{
-    int rc;
-
-    DEBUG("Registering interfaces...");
-    rc = interface_register(&hicn_light_ops);
-    if (FACEMGR_IS_ERROR(rc)) {
-        ERROR("Could not register interfaces");
-        goto ERR_REGISTER;
-    }
-
-#ifdef __APPLE__
-    rc = interface_register(&network_framework_ops);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR_REGISTER;
-#endif /* __APPLE__ */
-
-#ifdef __linux__
-    rc = interface_register(&netlink_ops);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR_REGISTER;
-#endif /* __linux__ */
-
-#if 0
-    rc = interface_register(&dummy_ops);
-    if (FACEMGR_IS_ERROR(rc))
-        goto ERR_REGISTER;
-#endif
-
-    rc = facemgr_create_interface(facemgr, "hl", "hicn_light", &facemgr->hl);
-    if (rc < 0) {
-        ERROR("Error creating 'hICN forwarder (hicn-light)' interface\n");
-        goto ERR_HL_CREATE;
-    }
-
-#ifdef __APPLE__
-    rc = facemgr_create_interface(facemgr, "nf", "network_framework", &facemgr->nf);
-    if (rc < 0) {
-        ERROR("Error creating 'Apple Network Framework' interface\n");
-        goto ERR_NF_CREATE;
-    }
-#endif /* __APPLE__ */
-
-#ifdef __linux__
-    rc = facemgr_create_interface(facemgr, "nl", "netlink", &facemgr->nl);
-    if (rc < 0) {
-        ERROR("Error creating 'Netlink' interface\n");
-        goto ERR_NF_CREATE;
-    }
-#endif /* __linux__ */
-
-#if 0
-    rc = facemgr_create_interface(facemgr, "dummy", "dummy", &facemgr->dummy);
-    if (rc < 0) {
-        ERROR("Error creating 'Dummy' interface\n");
-        goto ERR_NF_CREATE;
-    }
-#endif
-
-    DEBUG("Facemgr successfully initialized...");
-
-    return FACEMGR_SUCCESS;
-
-ERR_NF_CREATE:
-    interface_free(facemgr->hl);
-ERR_HL_CREATE:
-    //interface_map_remove(&facemgr->interface_map, data->nf->name);
-ERR_REGISTER:
-    return FACEMGR_FAILURE;
-}
diff --git a/ctrl/facemgr/src/facemgr.h b/ctrl/facemgr/src/facemgr.h
deleted file mode 100644
index 6505a1bd8..000000000
--- a/ctrl/facemgr/src/facemgr.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file facemgr.h
- * \brief Face manager library interface
- */
-#ifndef FACEMGR_H
-#define FACEMGR_H
-
-#include <string.h>
-#include "common.h"
-#include "face.h"
-#include "face_cache.h"
-#include "face_rules.h"
-#include "interface.h"
-#include "interface_map.h"
-#include "util/ip_address.h"
-#include "util/map.h"
-#include "util/policy.h"
-#ifndef __APPLE__
-#include <event2/event.h>
-#endif /* __APPLE__ */
-
-/*
- * \brief Face manager context
- */
-typedef struct {
-#ifndef APPLE
-    /* Event loop */
-    struct event_base * loop;
-#endif /* APPLE */
-
-    interface_map_t interface_map;
-    interface_t * hl;
-
-#ifdef __APPLE__
-    interface_t * nf;
-#endif /* __APPLE__ */
-
-#ifdef __linux__
-    interface_t * nl;
-#endif /* __linux__ */
-
-#if 0
-    interface_t * dummy;
-#endif
-
-    /* Overlay management */
-    uint16_t overlay_v4_local_port;
-    ip_address_t overlay_v4_remote_addr;
-    uint16_t overlay_v4_remote_port;
-    uint16_t overlay_v6_local_port;
-    ip_address_t overlay_v6_remote_addr;
-    uint16_t overlay_v6_remote_port;
-
-    face_rules_t rules;
-    face_cache_t face_cache;
-} facemgr_t;
-
-AUTOGENERATE_DEFS(facemgr);
-
-int facemgr_bootstrap(facemgr_t * facemgr);
-
-#endif /* FACEMGR_H */
diff --git a/ctrl/facemgr/src/interface.c b/ctrl/facemgr/src/interface.c
index af9f666a7..3e6bc0854 100644
--- a/ctrl/facemgr/src/interface.c
+++ b/ctrl/facemgr/src/interface.c
@@ -20,12 +20,13 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include "event.h"
-#include "face_rules.h"
+#include "facelet.h"
 #include "interface.h"
-#include "interface_ops_map.h"
 #include "util/map.h"
 
+TYPEDEF_MAP_H(interface_ops_map, const char *, const interface_ops_t *);
+TYPEDEF_MAP(interface_ops_map, const char *, const interface_ops_t *, strcmp, string_snprintf, generic_snprintf);
+
 static interface_ops_map_t * interface_ops_map = NULL;
 
 int
@@ -34,19 +35,19 @@ interface_register(const interface_ops_t * ops)
     if (!interface_ops_map) {
         interface_ops_map = interface_ops_map_create();
         if (!interface_ops_map)
-            return FACEMGR_FAILURE;
+            return -1;
     }
     interface_ops_map_add(interface_ops_map, ops->type, ops);
-    return FACEMGR_SUCCESS;
+    return 0;
 }
 
 interface_t *
 interface_create(const char * name, const char * type)
 {
 
-    interface_ops_t * ops;
+    const interface_ops_t * ops = NULL;
     int rc = interface_ops_map_get(interface_ops_map, type, &ops);
-    if (FACEMGR_IS_ERROR(rc)) {
+    if (rc < 0) {
         printf("Interface type not found %s\n", type);
         return NULL;
     }
@@ -80,25 +81,25 @@ _interface_set_callback(interface_t * interface, callback_t callback, void * cal
 }
 
 int
-interface_initialize(interface_t * interface, struct face_rules_s * rules)
+interface_initialize(interface_t * interface, void * cfg)
 {
     if (!interface->ops->initialize)
-        return FACEMGR_FAILURE;
-    return interface->ops->initialize(interface, rules, &interface->data);
+        return -1;
+    return interface->ops->initialize(interface, cfg);
 }
 
 int
 interface_finalize(interface_t * interface)
 {
     if (!interface->ops->finalize)
-        return FACEMGR_FAILURE;
+        return -1;
     return interface->ops->finalize(interface);
 }
 
 int
-interface_on_event(interface_t * interface, const event_t * event)
+interface_on_event(interface_t * interface, const facelet_t * facelet)
 {
     if (!interface->ops->on_event)
-        return FACEMGR_FAILURE;
-    return interface->ops->on_event(interface, event);
+        return -1;
+    return interface->ops->on_event(interface, facelet);
 }
diff --git a/ctrl/facemgr/src/interface.h b/ctrl/facemgr/src/interface.h
index f38313182..331312bde 100644
--- a/ctrl/facemgr/src/interface.h
+++ b/ctrl/facemgr/src/interface.h
@@ -30,27 +30,30 @@
 
 #include <stdbool.h>
 
-struct event_s;
-typedef int (*callback_t)(struct event_s * event, void * callback_data);
+struct facelet_s;
+typedef int (*callback_t)(struct facelet_s * facelet, void * callback_data);
 
 struct interface_s;
-struct face_rules_s;
 
 /**
  * \brief Interface operations
  */
 typedef struct {
+    /** The type given to the interfaces */
     char * type;
-    bool is_singleton;
-    int (*initialize)(struct interface_s * interface, struct face_rules_s * rules, void ** pdata);
+    /* Constructor */
+    int (*initialize)(struct interface_s * interface, void * cfg);
+    /* Destructor */
     int (*finalize)(struct interface_s * interface);
+    /* Callback upon file descriptor event (iif previously registered) */
     int (*callback)(struct interface_s * interface);
-    int (*on_event)(struct interface_s * interface, const struct event_s * event);
+    /* Callback upon face events coming from the face manager */
+    int (*on_event)(struct interface_s * interface, const struct facelet_s * facelet);
 } interface_ops_t;
 
 typedef struct interface_s {
     char * name;
-    interface_ops_t * ops;
+    const interface_ops_t * ops;
     callback_t callback;
     void * callback_data;
     void * data;
@@ -90,9 +93,9 @@ void _interface_set_callback(interface_t * interface, callback_t callback, void
 #define interface_set_callback(interface, callback, callback_data) \
     _interface_set_callback(interface, (callback_t)callback, (void*)callback_data)
 
-int interface_initialize(interface_t * interface, struct face_rules_s * rules);
+int interface_initialize(interface_t * interface, void * cfg);
 int interface_finalize(interface_t * interface);
 
-int interface_on_event(interface_t * interface, const struct event_s * event);
+int interface_on_event(interface_t * interface, const struct facelet_s * facelet);
 
 #endif /* FACEMGR_INTERFACE_H */
diff --git a/ctrl/facemgr/src/interface_map.c b/ctrl/facemgr/src/interface_map.c
deleted file mode 100644
index 9f7c20cab..000000000
--- a/ctrl/facemgr/src/interface_map.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "interface_map.h"
-
-#include <string.h>
-#include "interface.h"
-
-TYPEDEF_MAP(interface_map, const char *, interface_t *, strcmp, string_snprintf, generic_snprintf);
diff --git a/ctrl/facemgr/src/interface_ops_map.c b/ctrl/facemgr/src/interface_ops_map.c
deleted file mode 100644
index 373f5d22f..000000000
--- a/ctrl/facemgr/src/interface_ops_map.c
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "interface_ops_map.h"
-
-#include <string.h>
-#include "util/map.h"
-
-TYPEDEF_MAP(interface_ops_map, const char *, interface_ops_t *, strcmp, string_snprintf, generic_snprintf);
diff --git a/ctrl/facemgr/src/interfaces/CMakeLists.txt b/ctrl/facemgr/src/interfaces/CMakeLists.txt
index e5a26177a..8d079612a 100644
--- a/ctrl/facemgr/src/interfaces/CMakeLists.txt
+++ b/ctrl/facemgr/src/interfaces/CMakeLists.txt
@@ -24,12 +24,21 @@ endif()
 
 if(LINUX)
 add_subdirectory(netlink)
+add_subdirectory(bonjour)
 endif()
 
-if(false)
+if(ANDROID)
+add_subdirectory(android_utility)
+endif()
+
+if(WITH_EXAMPLE_DUMMY)
 add_subdirectory(dummy)
 endif()
 
+if(WITH_EXAMPLE_UPDOWN)
+add_subdirectory(updown)
+endif()
+
 set(SOURCE_FILES ${SOURCE_FILES} PARENT_SCOPE)
 set(HEADER_FILES ${HEADER_FILES} PARENT_SCOPE)
 set(INCLUDE_DIRS ${INCLUDE_DIRS} PARENT_SCOPE)
diff --git a/ctrl/facemgr/src/interfaces/android_utility/CMakeLists.txt b/ctrl/facemgr/src/interfaces/android_utility/CMakeLists.txt
new file mode 100644
index 000000000..0ebe87745
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/android_utility/CMakeLists.txt
@@ -0,0 +1,27 @@
+# Copyright (c) 2017-2019 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+list(APPEND SOURCE_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/android_utility.c
+)
+
+list(APPEND INCLUDE_DIRS
+)
+
+list(APPEND LIBRARIES
+)
+
+set(SOURCE_FILES ${SOURCE_FILES} PARENT_SCOPE)
+set(HEADER_FILES ${HEADER_FILES} PARENT_SCOPE)
+set(INCLUDE_DIRS ${INCLUDE_DIRS} PARENT_SCOPE)
+set(LIBRARIES    ${LIBRARIES}    PARENT_SCOPE)
diff --git a/ctrl/facemgr/src/interfaces/android_utility/android_utility.c b/ctrl/facemgr/src/interfaces/android_utility/android_utility.c
new file mode 100644
index 000000000..bb612507f
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/android_utility/android_utility.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file interfaces/android_utility/android_utility.c
+ * \brief Implementation of Android utility.
+ */
+
+#include <assert.h>
+
+#include <hicn/facemgr.h>
+#include <hicn/ctrl/face.h>
+#include <hicn/util/log.h>
+#include "../../common.h"
+#include "../../facelet.h"
+#include "../../interface.h"
+#include <hicn/android_utility/android_utility.h>
+
+#define FACEMGR_ANDROID_UTILITY_CLASS "com/cisco/hicn/forwarder/supportlibrary/AndroidUtility"
+
+#define AU_INTERFACE_TYPE_UNDEFINED 0
+#define AU_INTERFACE_TYPE_WIRED     1
+#define AU_INTERFACE_TYPE_WIFI      2
+#define AU_INTERFACE_TYPE_CELLULAR  3
+#define AU_INTERFACE_TYPE_LOOPBACK  4 /* not supported yet */
+
+#define ERR_STR_JAVA "Java VM parameters are required in the interface configuration."
+
+typedef struct {
+    android_utility_cfg_t cfg;
+} au_data_t;
+
+int au_initialize(interface_t * interface, void * cfg)
+{
+    au_data_t * data = malloc(sizeof(au_data_t));
+    if (!data)
+        return -1;
+    interface->data = data;
+
+    if (!cfg)
+        goto ERR_CFG;
+
+    data->cfg = * (android_utility_cfg_t *) cfg;
+
+    if (!data->cfg.jvm)
+        goto ERR_CFG;
+
+    return 0;
+
+ERR_CFG:
+        fprintf(stderr, ERR_STR_JAVA);
+        return -1;
+}
+
+int au_finalize(interface_t * interface)
+{
+    /* Nothing to do */
+    return 0;
+}
+
+int au_on_event(interface_t * interface, const facelet_t * facelet)
+{
+    /*
+     * This function is responsible to annotate every face we receive with the
+     * correct interface type, based on the value returned by the Android
+     * utility shipped with the Android forwarder.
+     */
+    DEBUG("Android utility received request");
+    au_data_t * data = (au_data_t*)interface->data;
+
+    netdevice_t netdevice = NETDEVICE_EMPTY;
+    int rc = facelet_get_netdevice(facelet, &netdevice);
+    if (rc < 0)
+        return -1;
+    DEBUG("[au_on_event] netdevice=%s", netdevice.name);
+
+    JNIEnv *env;
+    JavaVM *jvm = data->cfg.jvm;
+    (*jvm)->AttachCurrentThread(jvm, &env, NULL);
+    jclass cls = (*env)->FindClass(env, FACEMGR_ANDROID_UTILITY_CLASS);
+    jmethodID getNetworkType = (*env)->GetStaticMethodID(env, cls,
+            "getNetworkType", "(Ljava/lang/String;)I");
+    jint interface_type = (*env)->CallStaticIntMethod(env, cls, getNetworkType,
+            (*env)->NewStringUTF(env, netdevice.name));
+
+    DEBUG("Processing results for interface %s", netdevice.name);
+
+    netdevice_type_t netdevice_type = AU_INTERFACE_TYPE_UNDEFINED;
+    switch(interface_type) {
+        case AU_INTERFACE_TYPE_UNDEFINED:
+            break;
+        case AU_INTERFACE_TYPE_WIRED:
+            netdevice_type = NETDEVICE_TYPE_WIRED;
+            break;
+        case AU_INTERFACE_TYPE_WIFI:
+            netdevice_type = NETDEVICE_TYPE_WIFI;
+            break;
+        case AU_INTERFACE_TYPE_CELLULAR:
+            netdevice_type = NETDEVICE_TYPE_CELLULAR;
+            break;
+        case AU_INTERFACE_TYPE_LOOPBACK:
+            netdevice_type = NETDEVICE_TYPE_LOOPBACK;
+            break;
+        default:
+            return -1;
+    }
+
+    facelet_t * facelet_new = facelet_create();
+    facelet_set_netdevice(facelet_new, netdevice);
+    facelet_set_status(facelet_new, FACELET_STATUS_CLEAN);
+    facelet_set_netdevice_type(facelet_new, netdevice_type);
+
+    DEBUG("sending AU udpate");
+    facelet_set_event(facelet_new, FACELET_EVENT_UPDATE);
+    facelet_raise_event(facelet_new, interface);
+
+    return 0;
+}
+
+const interface_ops_t android_utility_ops = {
+    .type = "android_utility",
+    .initialize = au_initialize,
+    .finalize = au_finalize,
+    .callback = NULL,
+    .on_event = au_on_event,
+};
diff --git a/ctrl/facemgr/src/interfaces/bonjour/CMakeLists.txt b/ctrl/facemgr/src/interfaces/bonjour/CMakeLists.txt
new file mode 100644
index 000000000..8a0ddc888
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/bonjour/CMakeLists.txt
@@ -0,0 +1,32 @@
+# Copyright (c) 2017-2019 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+list(APPEND HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/bonjour.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/mdns/mdns.h
+)
+
+list(APPEND SOURCE_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/bonjour.c
+)
+
+list(APPEND LIBRARIES
+)
+
+list(APPEND INCLUDE_DIRS
+)
+
+set(SOURCE_FILES ${SOURCE_FILES} PARENT_SCOPE)
+set(HEADER_FILES ${HEADER_FILES} PARENT_SCOPE)
+set(INCLUDE_DIRS ${INCLUDE_DIRS} PARENT_SCOPE)
+set(LIBRARIES    ${LIBRARIES}    PARENT_SCOPE)
diff --git a/ctrl/facemgr/src/interfaces/bonjour/bonjour.c b/ctrl/facemgr/src/interfaces/bonjour/bonjour.c
new file mode 100644
index 000000000..d7b27b995
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/bonjour/bonjour.c
@@ -0,0 +1,408 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file interfaces/bonjour/bonjour.c
+ * \brief Implementation of Bonjour interface
+ *
+ * TODO:
+ *  - concurrent queries
+ *  - interface binding
+ */
+
+#include <hicn/facemgr.h>
+#include <hicn/util/log.h>
+
+#include "../../common.h"
+#include "../../facelet.h"
+#include "../../interface.h"
+#include "../../util/map.h"
+#include "mdns/mdns.h"
+
+#include "bonjour.h"
+
+#define DEFAULT_BUFFER_SIZE 2048
+#define SERVICE_STRING_SIZE 256
+
+#define DEFAULT_SERVICE_NAME "hicn"
+#define DEFAULT_SERVICE_PROTOCOL "udp"
+#define DEFAULT_SERVICE_DOMAIN "local"
+
+typedef struct {
+    bonjour_cfg_t cfg;
+    int sock;
+    size_t buffer_size;
+    void* buffer;
+
+    /* The face being resolved, non-NULL values indicate interface is busy... */
+    face_t * face;
+} bj_data_t;
+
+int bj_initialize(interface_t * interface, void * cfg)
+{
+    bj_data_t * data = malloc(sizeof(bj_data_t));
+    if (!data)
+        goto ERR_MALLOC;
+    interface->data = data;
+
+    if (cfg) {
+#ifndef __linux__
+        if (cfg->netdevice)
+            WARN("Binding to interface is (currently) only supported on Linux");
+#endif /* ! __linux__ */
+        data->cfg = * (bonjour_cfg_t *) cfg;
+    } else {
+        memset(&data->cfg, 0, sizeof(bonjour_cfg_t));
+    }
+
+    if (!data->cfg.service_name)
+        data->cfg.service_name = DEFAULT_SERVICE_NAME;
+
+    if (!data->cfg.service_protocol)
+        data->cfg.service_protocol = DEFAULT_SERVICE_PROTOCOL;
+
+    if (!data->cfg.service_domain)
+        data->cfg.service_domain = DEFAULT_SERVICE_DOMAIN;
+
+    data->sock = mdns_socket_open_ipv4();
+    if (data->sock < 0) {
+        printf("Failed to open socket: %s\n", strerror(errno));
+        goto ERR_SOCK;
+    }
+
+    /* Netdevice configuration */
+#ifdef __linux__
+#ifndef __ANDROID__
+    if (IS_VALID_NETDEVICE(data->cfg.netdevice)) {
+        int rc = setsockopt(data->sock, SOL_SOCKET, SO_BINDTODEVICE,
+                &data->cfg.netdevice.name, strlen(data->cfg.netdevice.name) + 1);
+        if (rc == -1) {
+            ERROR("setsockopt");
+            goto ERR_SOCK_OPT;
+        }
+    }
+#endif
+#endif /* __linux__ */
+
+    data->buffer_size = DEFAULT_BUFFER_SIZE;
+    data->buffer = malloc(data->buffer_size);
+    if (!data->buffer)
+        goto ERR_BUFFER;
+
+#ifdef _WIN32
+    WORD versionWanted = MAKEWORD(1, 1);
+    WSADATA wsaData;
+    WSAStartup(versionWanted, &wsaData);
+#endif
+
+    return data->sock;
+
+ERR_BUFFER:
+#ifndef __ANDROID__
+ERR_SOCK_OPT:
+#endif
+    mdns_socket_close(data->sock);
+#ifdef _WIN32
+    WSACleanup();
+#endif
+ERR_SOCK:
+    free(data);
+ERR_MALLOC:
+    return -1;
+}
+
+/*
+ * We reuse the callback to be triggered upon external events
+ * TODO: move to a cleaner interface architecture later...
+ */
+int bj_on_event(interface_t * interface, const facelet_t * facelet)
+{
+    bj_data_t * data = (bj_data_t*)interface->data;
+
+    /*
+    printf("Sending DNS-SD discovery\n");
+    if (mdns_discovery_send(sock)) {
+            printf("Failed to send DNS-DS discovery: %s\n", strerror(errno));
+            goto quit;
+    }
+
+    printf("Reading DNS-SD replies\n");
+    for (int i = 0; i < 10; ++i) {
+            records = mdns_discovery_recv(sock, buffer, capacity, callback,
+                                          user_data);
+            sleep(1);
+    }
+    */
+
+    DEBUG("Sending mDNS query");
+    char service_string[SERVICE_STRING_SIZE];
+
+    int rc = snprintf(service_string, SERVICE_STRING_SIZE, "_%s._%s.%s.",
+            data->cfg.service_name, data->cfg.service_protocol,
+            data->cfg.service_domain);
+    if (rc < 0)
+        ; // error
+    else if (rc >= SERVICE_STRING_SIZE)
+        ; //truncated
+
+    if (mdns_query_send(data->sock, MDNS_RECORDTYPE_PTR,
+                        service_string,
+                        strlen(service_string),
+                        data->buffer, data->buffer_size)) {
+            printf("Failed to send mDNS query: %s\n", strerror(errno));
+            return -1;
+    }
+    return 0;
+}
+
+static char addrbuffer[64];
+static char namebuffer[256];
+static mdns_record_txt_t txtbuffer[128];
+
+static mdns_string_t
+ipv4_address_to_string(char* buffer, size_t capacity, const struct sockaddr_in* addr) {
+	char host[NI_MAXHOST] = {0};
+	char service[NI_MAXSERV] = {0};
+	int ret = getnameinfo((const struct sockaddr*)addr, sizeof(struct sockaddr_in),
+	                      host, NI_MAXHOST, service, NI_MAXSERV,
+	                      NI_NUMERICSERV | NI_NUMERICHOST);
+	int len = 0;
+	if (ret == 0) {
+		if (addr->sin_port != 0)
+			len = snprintf(buffer, capacity, "%s:%s", host, service);
+		else
+			len = snprintf(buffer, capacity, "%s", host);
+	}
+	if (len >= (int)capacity)
+		len = (int)capacity - 1;
+	mdns_string_t str = {buffer, len};
+	return str;
+}
+
+static mdns_string_t
+ipv6_address_to_string(char* buffer, size_t capacity, const struct sockaddr_in6* addr) {
+	char host[NI_MAXHOST] = {0};
+	char service[NI_MAXSERV] = {0};
+	int ret = getnameinfo((const struct sockaddr*)addr, sizeof(struct sockaddr_in6),
+	                      host, NI_MAXHOST, service, NI_MAXSERV,
+	                      NI_NUMERICSERV | NI_NUMERICHOST);
+	int len = 0;
+	if (ret == 0) {
+		if (addr->sin6_port != 0)
+			len = snprintf(buffer, capacity, "[%s]:%s", host, service);
+		else
+			len = snprintf(buffer, capacity, "%s", host);
+	}
+	if (len >= (int)capacity)
+		len = (int)capacity - 1;
+	mdns_string_t str = {buffer, len};
+	return str;
+}
+
+static mdns_string_t
+ip_address_to_string(char* buffer, size_t capacity, const struct sockaddr* addr) {
+	if (addr->sa_family == AF_INET6)
+		return ipv6_address_to_string(buffer, capacity, (const struct sockaddr_in6*)addr);
+	return ipv4_address_to_string(buffer, capacity, (const struct sockaddr_in*)addr);
+}
+
+int
+ip_address_set_sockaddr(ip_address_t * ip_address, struct sockaddr * sa)
+{
+    switch(sa->sa_family) {
+        case AF_INET:
+            ip_address->v4.as_inaddr = ((struct sockaddr_in *)sa)->sin_addr;
+            break;
+        case AF_INET6:
+            ip_address->v6.as_in6addr = ((struct sockaddr_in6 *)sa)->sin6_addr;
+            break;
+        default:
+            return -1;
+    }
+
+    return 0;
+}
+
+static int
+callback(const struct sockaddr* from, mdns_entry_type_t entry, uint16_t type,
+        uint16_t rclass, uint32_t ttl, const void* data, size_t size, size_t
+        offset, size_t length, void* user_data)
+{
+    interface_t * interface = (interface_t*)user_data;
+    bj_data_t * bj_data = (bj_data_t *)interface->data;
+
+    struct sockaddr_storage addr;
+
+    mdns_string_t fromaddrstr = ip_address_to_string(addrbuffer, sizeof(addrbuffer), from);
+    const char* entrytype = (entry == MDNS_ENTRYTYPE_ANSWER) ? "answer" :
+        ((entry == MDNS_ENTRYTYPE_AUTHORITY) ? "authority" : "additional");
+
+    switch(type) {
+        case MDNS_RECORDTYPE_A:
+        {
+            ip_address_t ip_address;
+            mdns_record_parse_a(data, size, offset, length, (struct sockaddr_in*)&addr);
+            ip_address_set_sockaddr(&ip_address, (struct sockaddr *)&addr);
+
+            mdns_string_t addrstr = ipv4_address_to_string(namebuffer, sizeof(namebuffer), (struct sockaddr_in *)&addr);
+            DEBUG("%.*s : %s A %.*s",
+                    MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                    MDNS_STRING_FORMAT(addrstr));
+
+            facelet_t * facelet = facelet_create();
+            facelet_set_netdevice(facelet, bj_data->cfg.netdevice);
+            facelet_set_family(facelet, AF_INET);
+            facelet_set_remote_addr(facelet, ip_address);
+            //facelet_set_remote_port(facelet, ((struct sockaddr_in*)&addr)->sin_port);
+
+            facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+            facelet_raise_event(facelet, interface);
+            break;
+        }
+
+        case MDNS_RECORDTYPE_AAAA:
+        {
+            ip_address_t ip_address;
+            mdns_record_parse_aaaa(data, size, offset, length, (struct sockaddr_in6*)&addr);
+            ip_address_set_sockaddr(&ip_address, (struct sockaddr *)&addr);
+
+            mdns_string_t addrstr = ipv6_address_to_string(namebuffer,
+                    sizeof(namebuffer), (struct sockaddr_in6*)&addr);
+            DEBUG("%.*s : %s AAAA %.*s",
+                    MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                    MDNS_STRING_FORMAT(addrstr));
+
+            facelet_t * facelet = facelet_create();
+            facelet_set_netdevice(facelet, bj_data->cfg.netdevice);
+            facelet_set_family(facelet, AF_INET6);
+            facelet_set_remote_addr(facelet, ip_address);
+            //facelet_set_remote_port(facelet, ((struct sockaddr_in6*)&addr)->sin6_port);
+
+            facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+            facelet_raise_event(facelet, interface);
+            break;
+        }
+
+        case MDNS_RECORDTYPE_SRV: /* same port for both v4 and v6 */
+        {
+            mdns_record_srv_t srv = mdns_record_parse_srv(data, size, offset, length,
+                    namebuffer, sizeof(namebuffer));
+
+            DEBUG("%.*s : %s SRV %.*s priority %d weight %d port %d",
+                    MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                    MDNS_STRING_FORMAT(srv.name), srv.priority, srv.weight, srv.port);
+
+            /* We raise both v4 and v6
+             *
+             * Unless we choose whether we query A and/or AAAA, this might leave
+             * us with an unused pending facelet, eg. we might not have an IPv6
+             * but we raise an IPv6 bonjour event...
+             */
+
+            facelet_t * facelet = facelet_create();
+            facelet_set_netdevice(facelet, bj_data->cfg.netdevice);
+            facelet_set_family(facelet, AF_INET);
+            facelet_set_remote_port(facelet, srv.port);
+
+            facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+            facelet_raise_event(facelet, interface);
+
+            facelet = facelet_create();
+            facelet_set_netdevice(facelet, bj_data->cfg.netdevice);
+            facelet_set_family(facelet, AF_INET6);
+            facelet_set_remote_port(facelet, srv.port);
+
+            facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+            facelet_raise_event(facelet, interface);
+            break;
+        }
+
+        case MDNS_RECORDTYPE_PTR:
+        {
+            mdns_string_t namestr = mdns_record_parse_ptr(data, size, offset, length,
+                    namebuffer, sizeof(namebuffer));
+            DEBUG("%.*s : %s PTR %.*s type %u rclass 0x%x ttl %u length %d",
+                    MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                    MDNS_STRING_FORMAT(namestr), type, rclass, ttl, (int)length);
+            break;
+        }
+
+        case MDNS_RECORDTYPE_TXT:
+        {
+            size_t parsed = mdns_record_parse_txt(data, size, offset, length,
+                    txtbuffer, sizeof(txtbuffer) / sizeof(mdns_record_txt_t));
+            for (size_t itxt = 0; itxt < parsed; ++itxt) {
+                if (txtbuffer[itxt].value.length) {
+                    DEBUG("%.*s : %s TXT %.*s = %.*s",
+                            MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                            MDNS_STRING_FORMAT(txtbuffer[itxt].key),
+                            MDNS_STRING_FORMAT(txtbuffer[itxt].value));
+                }
+                else {
+                    DEBUG("%.*s : %s TXT %.*s",
+                            MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                            MDNS_STRING_FORMAT(txtbuffer[itxt].key));
+                }
+            }
+            break;
+        }
+
+        default:
+            /* Silently ignore the received record */
+            DEBUG("%.*s : %s type %u rclass 0x%x ttl %u length %d",
+                    MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+                    type, rclass, ttl, (int)length);
+            return 0;
+    }
+    return 0;
+
+}
+
+/*
+ * The fact we use a single fd does not allow us to get user_data associated to
+ * the query.
+ */
+int bj_callback(interface_t * interface)
+{
+    bj_data_t * data = (bj_data_t*)interface->data;
+    DEBUG("Got an mDNS reply");
+    /* size_t records = */ mdns_query_recv(data->sock, data->buffer, data->buffer_size, callback, interface, 1);
+
+    return 0;
+}
+
+int bj_finalize(interface_t * interface)
+{
+    bj_data_t * data = (bj_data_t*)interface->data;
+
+    free(data->buffer);
+    mdns_socket_close(data->sock);
+
+#ifdef _WIN32
+    WSACleanup();
+#endif
+
+    return 0;
+
+}
+
+const interface_ops_t bonjour_ops = {
+    .type = "bonjour",
+    .initialize = bj_initialize,
+    .on_event = bj_on_event,
+    .callback = bj_callback,
+    .finalize = bj_finalize,
+  //  .on_event = NULL,
+};
diff --git a/ctrl/facemgr/src/face_rules.h b/ctrl/facemgr/src/interfaces/bonjour/bonjour.h
index 28f5391a0..fe053079d 100644
--- a/ctrl/facemgr/src/face_rules.h
+++ b/ctrl/facemgr/src/interfaces/bonjour/bonjour.h
@@ -13,19 +13,23 @@
  * limitations under the License.
  */
 
-#ifndef FACE_RULES_H
-#define FACE_RULES_H
-
-#include "util/map.h"
-#include "util/policy.h"
-
-/*
- * Face creation rules
+/**
+ * \file interfaces/bonjour/bonjour.h
+ * \brief Bonjour interface
  *
- * For now, face creations rules are very simple and consist in a map between
- * the physical interface name, and the associated list of tags that will
- * preempt those assigned by the system.
+ * NOTES:
+ *  - shall we support multiple service names, or instanciate multiple instances
+ *  of the interface ?
+ *  - interface list ?
+ *  - ideally we should register here events that will trigger bonjour
+ *  queries...
  */
-TYPEDEF_MAP_H(face_rules, const char *, policy_tags_t);
 
-#endif /* FACE_RULES_H */
+#include <hicn/ctrl/face.h> /* netdevice_t */
+
+typedef struct {
+    netdevice_t netdevice;
+    char * service_name;
+    char * service_protocol;
+    char * service_domain;
+} bonjour_cfg_t;
diff --git a/ctrl/facemgr/src/interfaces/bonjour/mdns/LICENSE b/ctrl/facemgr/src/interfaces/bonjour/mdns/LICENSE
new file mode 100644
index 000000000..cf1ab25da
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/bonjour/mdns/LICENSE
@@ -0,0 +1,24 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>
diff --git a/ctrl/facemgr/src/interfaces/bonjour/mdns/README.md b/ctrl/facemgr/src/interfaces/bonjour/mdns/README.md
new file mode 100644
index 000000000..1bee49c08
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/bonjour/mdns/README.md
@@ -0,0 +1,9 @@
+# Public domain mDNS/DNS-SD library in C
+
+This library provides a cross-platform mDNS and DNS-DS library in C. The latest source code is always available at
+
+https://github.com/mjansson/mdns
+
+This library is put in the public domain; you can redistribute it and/or modify it without any restrictions.
+
+Created by Mattias Jansson ([@maniccoder](https://twitter.com/maniccoder))
diff --git a/ctrl/facemgr/src/interfaces/bonjour/mdns/mdns.c b/ctrl/facemgr/src/interfaces/bonjour/mdns/mdns.c
new file mode 100644
index 000000000..a8e97e8e0
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/bonjour/mdns/mdns.c
@@ -0,0 +1,192 @@
+
+#ifdef _WIN32
+#  define _CRT_SECURE_NO_WARNINGS 1
+#endif
+
+#include "mdns.h"
+
+#include <stdio.h>
+#include <errno.h>
+
+#ifdef _WIN32
+#  define sleep(x) Sleep(x * 1000)
+#else
+#  include <netdb.h>
+#endif
+
+static char addrbuffer[64];
+static char namebuffer[256];
+static mdns_record_txt_t txtbuffer[128];
+
+static mdns_string_t
+ipv4_address_to_string(char* buffer, size_t capacity, const struct sockaddr_in* addr) {
+	char host[NI_MAXHOST] = {0};
+	char service[NI_MAXSERV] = {0};
+	int ret = getnameinfo((const struct sockaddr*)addr, sizeof(struct sockaddr_in),
+	                      host, NI_MAXHOST, service, NI_MAXSERV,
+	                      NI_NUMERICSERV | NI_NUMERICHOST);
+	int len = 0;
+	if (ret == 0) {
+		if (addr->sin_port != 0)
+			len = snprintf(buffer, capacity, "%s:%s", host, service);
+		else
+			len = snprintf(buffer, capacity, "%s", host);
+	}
+	if (len >= (int)capacity)
+		len = (int)capacity - 1;
+	mdns_string_t str = {buffer, len};
+	return str;
+}
+
+static mdns_string_t
+ipv6_address_to_string(char* buffer, size_t capacity, const struct sockaddr_in6* addr) {
+	char host[NI_MAXHOST] = {0};
+	char service[NI_MAXSERV] = {0};
+	int ret = getnameinfo((const struct sockaddr*)addr, sizeof(struct sockaddr_in6),
+	                      host, NI_MAXHOST, service, NI_MAXSERV,
+	                      NI_NUMERICSERV | NI_NUMERICHOST);
+	int len = 0;
+	if (ret == 0) {
+		if (addr->sin6_port != 0)
+			len = snprintf(buffer, capacity, "[%s]:%s", host, service);
+		else
+			len = snprintf(buffer, capacity, "%s", host);
+	}
+	if (len >= (int)capacity)
+		len = (int)capacity - 1;
+	mdns_string_t str = {buffer, len};
+	return str;
+}
+
+static mdns_string_t
+ip_address_to_string(char* buffer, size_t capacity, const struct sockaddr* addr) {
+	if (addr->sa_family == AF_INET6)
+		return ipv6_address_to_string(buffer, capacity, (const struct sockaddr_in6*)addr);
+	return ipv4_address_to_string(buffer, capacity, (const struct sockaddr_in*)addr);
+}
+
+static int
+callback(const struct sockaddr* from,
+         mdns_entry_type_t entry, uint16_t type,
+         uint16_t rclass, uint32_t ttl,
+         const void* data, size_t size, size_t offset, size_t length,
+         void* user_data) {
+	mdns_string_t fromaddrstr = ip_address_to_string(addrbuffer, sizeof(addrbuffer), from);
+	const char* entrytype = (entry == MDNS_ENTRYTYPE_ANSWER) ? "answer" :
+	                        ((entry == MDNS_ENTRYTYPE_AUTHORITY) ? "authority" : "additional");
+	if (type == MDNS_RECORDTYPE_PTR) {
+		mdns_string_t namestr = mdns_record_parse_ptr(data, size, offset, length,
+		                                              namebuffer, sizeof(namebuffer));
+		INFO("%.*s : %s PTR %.*s type %u rclass 0x%x ttl %u length %d\n",
+		       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+		       MDNS_STRING_FORMAT(namestr), type, rclass, ttl, (int)length);
+	}
+	else if (type == MDNS_RECORDTYPE_SRV) {
+		mdns_record_srv_t srv = mdns_record_parse_srv(data, size, offset, length,
+		                                              namebuffer, sizeof(namebuffer));
+		INFO("%.*s : %s SRV %.*s priority %d weight %d port %d\n",
+		       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+		       MDNS_STRING_FORMAT(srv.name), srv.priority, srv.weight, srv.port);
+	}
+	else if (type == MDNS_RECORDTYPE_A) {
+		struct sockaddr_in addr;
+		mdns_record_parse_a(data, size, offset, length, &addr);
+		mdns_string_t addrstr = ipv4_address_to_string(namebuffer, sizeof(namebuffer), &addr);
+		INFO("%.*s : %s A %.*s\n",
+		       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+		       MDNS_STRING_FORMAT(addrstr));
+	}
+	else if (type == MDNS_RECORDTYPE_AAAA) {
+		struct sockaddr_in6 addr;
+		mdns_record_parse_aaaa(data, size, offset, length, &addr);
+		mdns_string_t addrstr = ipv6_address_to_string(namebuffer, sizeof(namebuffer), &addr);
+		INFO("%.*s : %s AAAA %.*s\n",
+		       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+		       MDNS_STRING_FORMAT(addrstr));
+	}
+	else if (type == MDNS_RECORDTYPE_TXT) {
+		size_t parsed = mdns_record_parse_txt(data, size, offset, length,
+		                                      txtbuffer, sizeof(txtbuffer) / sizeof(mdns_record_txt_t));
+		for (size_t itxt = 0; itxt < parsed; ++itxt) {
+			if (txtbuffer[itxt].value.length) {
+				INFO("%.*s : %s TXT %.*s = %.*s\n",
+				       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+				       MDNS_STRING_FORMAT(txtbuffer[itxt].key),
+				       MDNS_STRING_FORMAT(txtbuffer[itxt].value));
+			}
+			else {
+				INFO("%.*s : %s TXT %.*s\n",
+				       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+				       MDNS_STRING_FORMAT(txtbuffer[itxt].key));
+			}
+		}
+	}
+	else {
+		INFO("%.*s : %s type %u rclass 0x%x ttl %u length %d\n",
+		       MDNS_STRING_FORMAT(fromaddrstr), entrytype,
+		       type, rclass, ttl, (int)length);
+	}
+	return 0;
+}
+
+int
+main() {
+	size_t capacity = 2048;
+	void* buffer = 0;
+	void* user_data = 0;
+	size_t records;
+
+#ifdef _WIN32
+	WORD versionWanted = MAKEWORD(1, 1);
+	WSADATA wsaData;
+	WSAStartup(versionWanted, &wsaData);
+#endif
+
+	int sock = mdns_socket_open_ipv4();
+	if (sock < 0) {
+		INFO("Failed to open socket: %s\n", strerror(errno));
+		return -1;
+	}
+	INFO("Opened IPv4 socket for mDNS/DNS-SD\n");
+	buffer = malloc(capacity);
+/*
+	INFO("Sending DNS-SD discovery\n");
+	if (mdns_discovery_send(sock)) {
+		INFO("Failed to send DNS-DS discovery: %s\n", strerror(errno));
+		goto quit;
+	}
+
+	INFO("Reading DNS-SD replies\n");
+	for (int i = 0; i < 10; ++i) {
+		records = mdns_discovery_recv(sock, buffer, capacity, callback,
+		                              user_data);
+		sleep(1);
+	}
+        */
+
+	INFO("Sending mDNS query\n");
+	if (mdns_query_send(sock, MDNS_RECORDTYPE_PTR,
+	                    MDNS_STRING_CONST("_hicn._udp.local."),
+	                    buffer, capacity)) {
+		INFO("Failed to send mDNS query: %s\n", strerror(errno));
+		goto quit;
+	}
+
+	INFO("Reading mDNS replies\n");
+	for (int i = 0; i < 10; ++i) {
+		records = mdns_query_recv(sock, buffer, capacity, callback, user_data, 1);
+		sleep(1);
+	}
+
+quit:
+	free(buffer);
+
+	mdns_socket_close(sock);
+	INFO("Closed socket\n");
+
+#ifdef _WIN32
+	WSACleanup();
+#endif
+
+	return 0;
+}
diff --git a/ctrl/facemgr/src/interfaces/bonjour/mdns/mdns.h b/ctrl/facemgr/src/interfaces/bonjour/mdns/mdns.h
new file mode 100644
index 000000000..ff04b5d72
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/bonjour/mdns/mdns.h
@@ -0,0 +1,879 @@
+/* mdns.h  -  mDNS/DNS-SD library  -  Public Domain  -  2017 Mattias Jansson
+ *
+ * This library provides a cross-platform mDNS and DNS-SD library in C.
+ * The implementation is based on RFC 6762 and RFC 6763.
+ *
+ * The latest source code is always available at
+ *
+ * https://github.com/mjansson/mdns
+ *
+ * This library is put in the public domain; you can redistribute it and/or modify it without any restrictions.
+ *
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fcntl.h>
+#ifdef _WIN32
+#include <Winsock2.h>
+#include <Ws2tcpip.h>
+#define strncasecmp _strnicmp
+#else
+#include <unistd.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#endif
+
+#define MDNS_INVALID_POS ((size_t)-1)
+
+#define MDNS_STRING_CONST(s) (s), (sizeof((s))-1)
+#define MDNS_STRING_FORMAT(s) (int)((s).length), s.str
+
+enum mdns_record_type {
+	MDNS_RECORDTYPE_IGNORE = 0,
+	//Address
+	MDNS_RECORDTYPE_A = 1,
+	//Domain Name pointer
+	MDNS_RECORDTYPE_PTR = 12,
+	//Arbitrary text string
+	MDNS_RECORDTYPE_TXT = 16,
+	//IP6 Address [Thomson]
+	MDNS_RECORDTYPE_AAAA = 28,
+	//Server Selection [RFC2782]
+	MDNS_RECORDTYPE_SRV = 33
+};
+
+enum mdns_entry_type {
+	MDNS_ENTRYTYPE_ANSWER = 1,
+	MDNS_ENTRYTYPE_AUTHORITY = 2,
+	MDNS_ENTRYTYPE_ADDITIONAL = 3
+};
+
+enum mdns_class {
+	MDNS_CLASS_IN = 1
+};
+
+typedef enum mdns_record_type  mdns_record_type_t;
+typedef enum mdns_entry_type   mdns_entry_type_t;
+typedef enum mdns_class        mdns_class_t;
+
+typedef int (* mdns_record_callback_fn)(const struct sockaddr* from,
+                                        mdns_entry_type_t entry, uint16_t type,
+                                        uint16_t rclass, uint32_t ttl,
+                                        const void* data, size_t size, size_t offset, size_t length,
+                                        void* user_data);
+
+typedef struct mdns_string_t       mdns_string_t;
+typedef struct mdns_string_pair_t  mdns_string_pair_t;
+typedef struct mdns_record_srv_t   mdns_record_srv_t;
+typedef struct mdns_record_txt_t   mdns_record_txt_t;
+
+struct mdns_string_t {
+	const char* str;
+	size_t length;
+};
+
+struct mdns_string_pair_t {
+	size_t  offset;
+	size_t  length;
+	int     ref;
+};
+
+struct mdns_record_srv_t {
+	uint16_t priority;
+	uint16_t weight;
+	uint16_t port;
+	mdns_string_t name;
+};
+
+struct mdns_record_txt_t {
+	mdns_string_t key;
+	mdns_string_t value;
+};
+
+static int
+mdns_socket_open_ipv4(void);
+
+static int
+mdns_socket_setup_ipv4(int sock);
+
+#if 0
+static int
+mdns_socket_open_ipv6(void);
+
+
+
+static int
+mdns_socket_setup_ipv6(int sock);
+#endif
+
+static void
+mdns_socket_close(int sock);
+
+#if 0
+static int
+mdns_discovery_send(int sock);
+
+
+static size_t
+mdns_discovery_recv(int sock, void* buffer, size_t capacity,
+                    mdns_record_callback_fn callback, void* user_data);
+#endif
+
+static int
+mdns_query_send(int sock, mdns_record_type_t type, const char* name, size_t length,
+                void* buffer, size_t capacity);
+
+static size_t
+mdns_query_recv(int sock, void* buffer, size_t capacity,
+                mdns_record_callback_fn callback, void* user_data,
+                uint8_t one_shot);
+
+static mdns_string_t
+mdns_string_extract(const void* buffer, size_t size, size_t* offset,
+                    char* str, size_t capacity);
+
+static int
+mdns_string_skip(const void* buffer, size_t size, size_t* offset);
+
+#if 0
+static int
+mdns_string_equal(const void* buffer_lhs, size_t size_lhs, size_t* ofs_lhs,
+                  const void* buffer_rhs, size_t size_rhs, size_t* ofs_rhs);
+#endif
+
+static void*
+mdns_string_make(void* data, size_t capacity, const char* name, size_t length);
+
+static mdns_string_t
+mdns_record_parse_ptr(const void* buffer, size_t size, size_t offset, size_t length,
+                      char* strbuffer, size_t capacity);
+
+static mdns_record_srv_t
+mdns_record_parse_srv(const void* buffer, size_t size, size_t offset, size_t length,
+                      char* strbuffer, size_t capacity);
+
+static struct sockaddr_in*
+mdns_record_parse_a(const void* buffer, size_t size, size_t offset, size_t length,
+                    struct sockaddr_in* addr);
+
+static struct sockaddr_in6*
+mdns_record_parse_aaaa(const void* buffer, size_t size, size_t offset, size_t length,
+                       struct sockaddr_in6* addr);
+
+static size_t
+mdns_record_parse_txt(const void* buffer, size_t size, size_t offset, size_t length,
+                      mdns_record_txt_t* records, size_t capacity);
+
+// Implementations
+
+static int
+mdns_socket_open_ipv4(void) {
+	int sock = (int)socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+	if (sock < 0)
+		return -1;
+	if (mdns_socket_setup_ipv4(sock)) {
+		mdns_socket_close(sock);
+		return -1;
+	}
+	return sock;
+}
+
+static int
+mdns_socket_setup_ipv4(int sock) {
+	struct sockaddr_in saddr;
+	memset(&saddr, 0, sizeof(saddr));
+	saddr.sin_family = AF_INET;
+	saddr.sin_addr.s_addr = INADDR_ANY;
+#ifdef __APPLE__
+	saddr.sin_len = sizeof(saddr);
+#endif
+
+	if (bind(sock, (struct sockaddr*)&saddr, sizeof(saddr)))
+		return -1;
+
+#ifdef _WIN32
+	unsigned long param = 1;
+	ioctlsocket(sock, FIONBIO, &param);
+#else
+	const int flags = fcntl(sock, F_GETFL, 0);
+	fcntl(sock, F_SETFL, flags | O_NONBLOCK);
+#endif
+
+	unsigned char ttl = 1;
+	unsigned char loopback = 1;
+	struct ip_mreq req;
+
+	setsockopt(sock, IPPROTO_IP, IP_MULTICAST_TTL, (const char*)&ttl, sizeof(ttl));
+	setsockopt(sock, IPPROTO_IP, IP_MULTICAST_LOOP, (const char*)&loopback, sizeof(loopback));
+
+	memset(&req, 0, sizeof(req));
+	req.imr_multiaddr.s_addr = htonl((((uint32_t)224U) << 24U) | ((uint32_t)251U));
+	req.imr_interface.s_addr = INADDR_ANY;
+	if (setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char*)&req, sizeof(req)))
+		return -1;
+
+	return 0;
+}
+
+#if 0
+static int
+mdns_socket_open_ipv6(void) {
+	int sock = (int)socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
+	if (sock < 0)
+		return -1;
+	if (mdns_socket_setup_ipv6(sock)) {
+		mdns_socket_close(sock);
+		return -1;
+	}
+	return sock;
+}
+
+
+static int
+mdns_socket_setup_ipv6(int sock) {
+	struct sockaddr_in6 saddr;
+	memset(&saddr, 0, sizeof(saddr));
+	saddr.sin6_family = AF_INET6;
+	saddr.sin6_addr = in6addr_any;
+#ifdef __APPLE__
+	saddr.sin6_len = sizeof(saddr);
+#endif
+
+	if (bind(sock, (struct sockaddr*)&saddr, sizeof(saddr)))
+		return -1;
+
+#ifdef _WIN32
+	unsigned long param = 1;
+	ioctlsocket(sock, FIONBIO, &param);
+#else
+	const int flags = fcntl(sock, F_GETFL, 0);
+	fcntl(sock, F_SETFL, flags | O_NONBLOCK);
+#endif
+
+	int hops = 1;
+	unsigned int loopback = 1;
+	struct ipv6_mreq req;
+
+	setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS, (const char*)&hops, sizeof(hops));
+	setsockopt(sock, IPPROTO_IPV6, IPV6_MULTICAST_LOOP, (const char*)&loopback, sizeof(loopback));
+
+	memset(&req, 0, sizeof(req));
+	req.ipv6mr_multiaddr.s6_addr[0] = 0xFF;
+	req.ipv6mr_multiaddr.s6_addr[1] = 0x02;
+	req.ipv6mr_multiaddr.s6_addr[15] = 0xFB;
+	if (setsockopt(sock, IPPROTO_IPV6, IPV6_JOIN_GROUP, (char*)&req, sizeof(req)))
+		return -1;
+
+	return 0;
+}
+#endif
+
+static void
+mdns_socket_close(int sock) {
+#ifdef _WIN32
+	closesocket(sock);
+#else
+	close(sock);
+#endif
+}
+
+static int
+mdns_is_string_ref(uint8_t val) {
+	return (0xC0 == (val & 0xC0));
+}
+
+static mdns_string_pair_t
+mdns_get_next_substring(const void* rawdata, size_t size, size_t offset) {
+	const uint8_t* buffer = rawdata;
+	mdns_string_pair_t pair = {MDNS_INVALID_POS, 0, 0};
+	if (!buffer[offset]) {
+		pair.offset = offset;
+		return pair;
+	}
+	if (mdns_is_string_ref(buffer[offset])) {
+		if (size < offset + 2)
+			return pair;
+
+		offset = (((size_t)(0x3f & buffer[offset]) << 8) | (size_t)buffer[offset + 1]);
+		if (offset >= size)
+			return pair;
+
+		pair.ref = 1;
+	}
+
+	size_t length = (size_t)buffer[offset++];
+	if (size < offset + length)
+		return pair;
+
+	pair.offset = offset;
+	pair.length = length;
+
+	return pair;
+}
+
+static int
+mdns_string_skip(const void* buffer, size_t size, size_t* offset) {
+	size_t cur = *offset;
+	mdns_string_pair_t substr;
+	do {
+		substr = mdns_get_next_substring(buffer, size, cur);
+		if (substr.offset == MDNS_INVALID_POS)
+			return 0;
+		if (substr.ref) {
+			*offset = cur + 2;
+			return 1;
+		}
+		cur = substr.offset + substr.length;
+	}
+	while (substr.length);
+
+	*offset = cur + 1;
+	return 1;
+}
+
+#if 0
+static int
+mdns_string_equal(const void* buffer_lhs, size_t size_lhs, size_t* ofs_lhs,
+                  const void* buffer_rhs, size_t size_rhs, size_t* ofs_rhs) {
+	size_t lhs_cur = *ofs_lhs;
+	size_t rhs_cur = *ofs_rhs;
+	size_t lhs_end = MDNS_INVALID_POS;
+	size_t rhs_end = MDNS_INVALID_POS;
+	mdns_string_pair_t lhs_substr;
+	mdns_string_pair_t rhs_substr;
+	do {
+		lhs_substr = mdns_get_next_substring(buffer_lhs, size_lhs, lhs_cur);
+		rhs_substr = mdns_get_next_substring(buffer_rhs, size_rhs, rhs_cur);
+		if ((lhs_substr.offset == MDNS_INVALID_POS) || (rhs_substr.offset == MDNS_INVALID_POS))
+			return 0;
+		if (lhs_substr.length != rhs_substr.length)
+			return 0;
+		if (strncasecmp((const char*)buffer_rhs + rhs_substr.offset,
+		                (const char*)buffer_lhs + lhs_substr.offset, rhs_substr.length))
+			return 0;
+		if (lhs_substr.ref && (lhs_end == MDNS_INVALID_POS))
+			lhs_end = lhs_cur + 2;
+		if (rhs_substr.ref && (rhs_end == MDNS_INVALID_POS))
+			rhs_end = rhs_cur + 2;
+		lhs_cur = lhs_substr.offset + lhs_substr.length;
+		rhs_cur = rhs_substr.offset + rhs_substr.length;
+	}
+	while (lhs_substr.length);
+
+	if (lhs_end == MDNS_INVALID_POS)
+		lhs_end = lhs_cur + 1;
+	*ofs_lhs = lhs_end;
+
+	if (rhs_end == MDNS_INVALID_POS)
+		rhs_end = rhs_cur + 1;
+	*ofs_rhs = rhs_end;
+
+	return 1;
+}
+#endif
+
+static mdns_string_t
+mdns_string_extract(const void* buffer, size_t size, size_t* offset,
+                    char* str, size_t capacity) {
+	size_t cur = *offset;
+	size_t end = MDNS_INVALID_POS;
+	mdns_string_pair_t substr;
+	mdns_string_t result = {str, 0};
+	char* dst = str;
+	size_t remain = capacity;
+	do {
+		substr = mdns_get_next_substring(buffer, size, cur);
+		if (substr.offset == MDNS_INVALID_POS)
+			return result;
+		if (substr.ref && (end == MDNS_INVALID_POS))
+			end = cur + 2;
+		if (substr.length) {
+			size_t to_copy = (substr.length < remain) ? substr.length : remain;
+			memcpy(dst, (const char*)buffer + substr.offset, to_copy);
+			dst += to_copy;
+			remain -= to_copy;
+			if (remain) {
+				*dst++ = '.';
+				--remain;
+			}
+		}
+		cur = substr.offset + substr.length;
+	}
+	while (substr.length);
+
+	if (end == MDNS_INVALID_POS)
+		end = cur + 1;
+	*offset = end;
+
+	result.length = capacity - remain;
+	return result;
+}
+
+static size_t
+mdns_string_find(const char* str, size_t length, char c, size_t offset) {
+	const void* found;
+	if (offset >= length)
+		return MDNS_INVALID_POS;
+	found = memchr(str + offset, c, length - offset);
+	if (found)
+		return (size_t)((const char*)found - str);
+	return MDNS_INVALID_POS;
+}
+
+static void*
+mdns_string_make(void* data, size_t capacity, const char* name, size_t length) {
+	size_t pos = 0;
+	size_t last_pos = 0;
+	size_t remain = capacity;
+	unsigned char* dest = data;	
+	while ((last_pos < length) && ((pos = mdns_string_find(name, length, '.', last_pos)) != MDNS_INVALID_POS)) {
+		size_t sublength = pos - last_pos;
+		if (sublength < remain) {
+			*dest = (unsigned char)sublength;
+			memcpy(dest + 1, name + last_pos, sublength);
+			dest += sublength + 1;
+			remain -= sublength + 1;
+		}
+		else {
+			return 0;
+		}
+		last_pos = pos + 1;
+	}
+	if (last_pos < length) {
+		size_t sublength = length - last_pos;
+		if (sublength < capacity) {
+			*dest = (unsigned char)sublength;
+			memcpy(dest + 1, name + last_pos, sublength);
+			dest += sublength + 1;
+			remain -= sublength + 1;
+		}
+		else {
+			return 0;
+		}
+	}
+	if (!remain)
+		return 0;
+	*dest++ = 0;
+	return dest;
+}
+
+static size_t
+mdns_records_parse(const struct sockaddr* from, const void* buffer, size_t size, size_t* offset,
+                   mdns_entry_type_t type, size_t records, mdns_record_callback_fn callback,
+                   void* user_data) {
+	size_t parsed = 0;
+	int do_callback = 1;
+	for (size_t i = 0; i < records; ++i) {
+		mdns_string_skip(buffer, size, offset);
+		const uint16_t* data = (const uint16_t*)((const char*)buffer + (*offset));
+
+		uint16_t rtype = ntohs(*data++);
+		uint16_t rclass = ntohs(*data++);
+		uint32_t ttl = ntohs(*(const uint32_t*)(const void*)data); data += 2;
+		uint16_t length = ntohs(*data++);
+
+		*offset += 10;
+
+		if (do_callback) {
+			++parsed;
+			if (callback(from, type, rtype, rclass, ttl, buffer, size, *offset, length,
+			             user_data))
+				do_callback = 0;
+		}
+
+		*offset += length;
+	}
+	return parsed;
+}
+
+static const uint8_t mdns_services_query[] = {
+	// Transaction ID
+	0x00, 0x00,
+	// Flags
+	0x00, 0x00,
+	// 1 question
+	0x00, 0x01,
+	// No answer, authority or additional RRs
+	0x00, 0x00,
+	0x00, 0x00,
+	0x00, 0x00,
+	// _services._dns-sd._udp.local.
+	0x09, '_', 's', 'e', 'r', 'v', 'i', 'c', 'e', 's',
+	0x07, '_', 'd', 'n', 's', '-', 's', 'd',
+	0x04, '_', 'u', 'd', 'p',
+	0x05, 'l', 'o', 'c', 'a', 'l',
+	0x00,
+	// PTR record
+	0x00, MDNS_RECORDTYPE_PTR,
+	// QU (unicast response) and class IN
+	0x80, MDNS_CLASS_IN
+};
+
+#if 0
+static int
+mdns_discovery_send(int sock) {
+	struct sockaddr_storage addr_storage;
+	struct sockaddr_in addr;
+	struct sockaddr_in6 addr6;
+	struct sockaddr* saddr = (struct sockaddr*)&addr_storage;
+	socklen_t saddrlen = sizeof(struct sockaddr_storage);
+	if (getsockname(sock, saddr, &saddrlen))
+		return -1;
+	if (saddr->sa_family == AF_INET6) {
+		memset(&addr6, 0, sizeof(struct sockaddr_in6));
+		addr6.sin6_family = AF_INET6;
+#ifdef __APPLE__
+		addr6.sin6_len = sizeof(struct sockaddr_in6);
+#endif
+		addr6.sin6_addr.s6_addr[0] = 0xFF;
+		addr6.sin6_addr.s6_addr[1] = 0x02;
+		addr6.sin6_addr.s6_addr[15] = 0xFB;
+		addr6.sin6_port = htons((unsigned short)5353);
+		saddr = (struct sockaddr*)&addr6;
+		saddrlen = sizeof(struct sockaddr_in6);
+	}
+	else {
+		memset(&addr, 0, sizeof(struct sockaddr_in));
+		addr.sin_family = AF_INET;
+#ifdef __APPLE__
+		addr.sin_len = sizeof(struct sockaddr_in);
+#endif
+		addr.sin_addr.s_addr = htonl((((uint32_t)224U) << 24U) | ((uint32_t)251U));
+		addr.sin_port = htons((unsigned short)5353);
+		saddr = (struct sockaddr*)&addr;
+		saddrlen = sizeof(struct sockaddr_in);
+	}
+
+	if (sendto(sock, mdns_services_query, sizeof(mdns_services_query), 0,
+	           saddr, saddrlen) < 0)
+		return -1;
+	return 0;
+}
+
+static size_t
+mdns_discovery_recv(int sock, void* buffer, size_t capacity,
+                    mdns_record_callback_fn callback, void* user_data) {
+	struct sockaddr_in6 addr;
+	struct sockaddr* saddr = (struct sockaddr*)&addr;
+	memset(&addr, 0, sizeof(addr));
+	saddr->sa_family = AF_INET;
+#ifdef __APPLE__
+	saddr->sa_len = sizeof(addr);
+#endif
+	socklen_t addrlen = sizeof(addr);
+	int ret = recvfrom(sock, buffer, capacity, 0,
+	                   saddr, &addrlen);
+	if (ret <= 0)
+		return 0;
+
+	size_t data_size = (size_t)ret;
+	size_t records = 0;
+	uint16_t* data = (uint16_t*)buffer;
+
+	uint16_t transaction_id = ntohs(*data++);
+	uint16_t flags          = ntohs(*data++);
+	uint16_t questions      = ntohs(*data++);
+	uint16_t answer_rrs     = ntohs(*data++);
+	uint16_t authority_rrs  = ntohs(*data++);
+	uint16_t additional_rrs = ntohs(*data++);
+
+	if (transaction_id || (flags != 0x8400))
+		return 0; //Not a reply to our question
+
+	if (questions > 1)
+		return 0;
+
+	int i;
+	for (i = 0; i < questions; ++i) {
+		size_t ofs = (size_t)((char*)data - (char*)buffer);
+		size_t verify_ofs = 12;
+		//Verify it's our question, _services._dns-sd._udp.local.
+		if (!mdns_string_equal(buffer, data_size, &ofs,
+		                       mdns_services_query, sizeof(mdns_services_query), &verify_ofs))
+			return 0;
+		data = (uint16_t*)((char*)buffer + ofs);
+
+		uint16_t type = ntohs(*data++);
+		uint16_t rclass = ntohs(*data++);
+
+		//Make sure we get a reply based on our PTR question for class IN
+		if ((type != MDNS_RECORDTYPE_PTR) || ((rclass & 0x7FFF) != MDNS_CLASS_IN))
+			return 0;
+	}
+
+	int do_callback = 1;
+	for (i = 0; i < answer_rrs; ++i) {
+		size_t ofs = (size_t)((char*)data - (char*)buffer);
+		size_t verify_ofs = 12;
+		//Verify it's an answer to our question, _services._dns-sd._udp.local.
+		int is_answer = mdns_string_equal(buffer, data_size, &ofs,
+		                                  mdns_services_query, sizeof(mdns_services_query), &verify_ofs);
+		data = (uint16_t*)((char*)buffer + ofs);
+
+		uint16_t type = ntohs(*data++);
+		uint16_t rclass = ntohs(*data++);
+		uint32_t ttl = ntohl(*(uint32_t*)(void*)data); data += 2;
+		uint16_t length = ntohs(*data++);
+
+		if (is_answer && do_callback) {
+			++records;
+			if (callback(saddr, MDNS_ENTRYTYPE_ANSWER, type, rclass, ttl, buffer,
+			             data_size, (size_t)((char*)data - (char*)buffer), length,
+			             user_data))
+				do_callback = 0;
+		}
+		data = (void*)((char*)data + length);
+	}
+
+	size_t offset = (size_t)((char*)data - (char*)buffer);
+	records += mdns_records_parse(saddr, buffer, data_size, &offset,
+	                              MDNS_ENTRYTYPE_AUTHORITY, authority_rrs, 
+	                              callback, user_data);
+	records += mdns_records_parse(saddr, buffer, data_size, &offset,
+	                              MDNS_ENTRYTYPE_ADDITIONAL, additional_rrs, 
+	                              callback, user_data);
+
+	return records;
+}
+#endif
+
+static uint16_t mdns_transaction_id = 0;
+
+static int
+mdns_query_send(int sock, mdns_record_type_t type, const char* name, size_t length,
+                void* buffer, size_t capacity) {
+	if (capacity < (17 + length))
+		return -1;
+
+	uint16_t* data = buffer;
+	//Transaction ID
+	*data++ = htons(++mdns_transaction_id);
+	//Flags
+	*data++ = 0;
+	//Questions
+	*data++ = htons(1);
+	//No answer, authority or additional RRs
+	*data++ = 0;
+	*data++ = 0;
+	*data++ = 0;
+	//Name string
+	data = mdns_string_make(data, capacity - 17, name, length);
+	if (!data)
+		return -1;
+	//Record type
+	*data++ = htons(type);
+	//! Unicast response, class IN
+	*data++ = htons(0x8000U | MDNS_CLASS_IN);
+
+	struct sockaddr_storage addr_storage;
+	struct sockaddr_in addr;
+	struct sockaddr_in6 addr6;
+	struct sockaddr* saddr = (struct sockaddr*)&addr_storage;
+	socklen_t saddrlen = sizeof(struct sockaddr_storage);
+	if (getsockname(sock, saddr, &saddrlen))
+		return -1;
+	if (saddr->sa_family == AF_INET6) {
+		memset(&addr6, 0, sizeof(struct sockaddr_in6));
+		addr6.sin6_family = AF_INET6;
+#ifdef __APPLE__
+		addr6.sin6_len = sizeof(struct sockaddr_in6);
+#endif
+		addr6.sin6_addr.s6_addr[0] = 0xFF;
+		addr6.sin6_addr.s6_addr[1] = 0x02;
+		addr6.sin6_addr.s6_addr[15] = 0xFB;
+		addr6.sin6_port = htons((unsigned short)5353);
+		saddr = (struct sockaddr*)&addr6;
+		saddrlen = sizeof(struct sockaddr_in6);
+	}
+	else {
+		memset(&addr, 0, sizeof(struct sockaddr_in));
+		addr.sin_family = AF_INET;
+#ifdef __APPLE__
+		addr.sin_len = sizeof(struct sockaddr_in);
+#endif
+		addr.sin_addr.s_addr = htonl((((uint32_t)224U) << 24U) | ((uint32_t)251U));
+		addr.sin_port = htons((unsigned short)5353);
+		saddr = (struct sockaddr*)&addr;
+		saddrlen = sizeof(struct sockaddr_in);
+	}
+
+	if (sendto(sock, buffer, (char*)data - (char*)buffer, 0,
+	           saddr, saddrlen) < 0)
+		return -1;
+	return 0;
+}
+
+static size_t
+mdns_query_recv(int sock, void* buffer, size_t capacity,
+                mdns_record_callback_fn callback, void* user_data,
+                uint8_t one_shot) {
+	struct sockaddr_in6 addr;
+	struct sockaddr* saddr = (struct sockaddr*)&addr;
+	memset(&addr, 0, sizeof(addr));
+	saddr->sa_family = AF_INET;
+#ifdef __APPLE__
+	saddr->sa_len = sizeof(addr);
+#endif
+	socklen_t addrlen = sizeof(addr);
+	int ret = recvfrom(sock, buffer, capacity, 0,
+	                   saddr, &addrlen);
+	if (ret <= 0)
+		return 0;
+
+	size_t data_size = (size_t)ret;
+	uint16_t* data = (uint16_t*)buffer;
+
+	uint16_t transaction_id = ntohs(*data++);
+	++data;// uint16_t flags = ntohs(*data++);
+	uint16_t questions      = ntohs(*data++);
+	uint16_t answer_rrs     = ntohs(*data++);
+	uint16_t authority_rrs  = ntohs(*data++);
+	uint16_t additional_rrs = ntohs(*data++);
+
+	if (one_shot && transaction_id != mdns_transaction_id)// || (flags != 0x8400))
+		return 0; //Not a reply to our last question
+
+	if (questions > 1)
+		return 0;
+
+	//Skip questions part
+	int i;
+	for (i = 0; i < questions; ++i) {
+		size_t ofs = (size_t)((char*)data - (char*)buffer);
+		if (!mdns_string_skip(buffer, data_size, &ofs))
+			return 0;
+		data = (void*)((char*)buffer + ofs);
+		++data;
+		++data;
+	}
+
+	size_t records = 0;
+	size_t offset = (size_t)((char*)data - (char*)buffer);
+	records += mdns_records_parse(saddr, buffer, data_size, &offset,
+	                              MDNS_ENTRYTYPE_ANSWER, answer_rrs, 
+	                              callback, user_data);
+	records += mdns_records_parse(saddr, buffer, data_size, &offset,
+	                              MDNS_ENTRYTYPE_AUTHORITY, authority_rrs, 
+	                              callback, user_data);
+	records += mdns_records_parse(saddr, buffer, data_size, &offset,
+	                              MDNS_ENTRYTYPE_ADDITIONAL, additional_rrs, 
+	                              callback, user_data);
+	return records;
+}
+
+static mdns_string_t
+mdns_record_parse_ptr(const void* buffer, size_t size, size_t offset, size_t length,
+                      char* strbuffer, size_t capacity) {
+	//PTR record is just a string
+	if ((size >= offset + length) && (length >= 2))
+		return mdns_string_extract(buffer, size, &offset, strbuffer, capacity);
+	mdns_string_t empty = {0, 0};
+	return empty;
+}
+
+static mdns_record_srv_t
+mdns_record_parse_srv(const void* buffer, size_t size, size_t offset, size_t length,
+                      char* strbuffer, size_t capacity) {
+	mdns_record_srv_t srv;
+	memset(&srv, 0, sizeof(mdns_record_srv_t));
+	// Read the priority, weight, port number and the discovery name
+	// SRV record format (http://www.ietf.org/rfc/rfc2782.txt):
+	// 2 bytes network-order unsigned priority
+	// 2 bytes network-order unsigned weight
+	// 2 bytes network-order unsigned port
+	// string: discovery (domain) name, minimum 2 bytes when compressed
+	if ((size >= offset + length) && (length >= 8)) {
+		const uint16_t* recorddata = (const uint16_t*)((const char*)buffer + offset);
+		srv.priority = ntohs(*recorddata++);
+		srv.weight = ntohs(*recorddata++);
+		srv.port = ntohs(*recorddata++);
+		offset += 6;
+		srv.name = mdns_string_extract(buffer, size, &offset, strbuffer, capacity);
+	}
+	return srv;
+}
+
+static struct sockaddr_in*
+mdns_record_parse_a(const void* buffer, size_t size, size_t offset, size_t length,
+                    struct sockaddr_in* addr) {
+	memset(addr, 0, sizeof(struct sockaddr_in));
+	addr->sin_family = AF_INET;
+#ifdef __APPLE__
+	addr->sin_len = sizeof(struct sockaddr_in);
+#endif
+	if ((size >= offset + length) && (length == 4))
+		addr->sin_addr.s_addr = *(const uint32_t*)((const char*)buffer + offset);
+	return addr;
+}
+
+static struct sockaddr_in6*
+mdns_record_parse_aaaa(const void* buffer, size_t size, size_t offset, size_t length,
+                       struct sockaddr_in6* addr) {
+	memset(addr, 0, sizeof(struct sockaddr_in6));
+	addr->sin6_family = AF_INET6;
+#ifdef __APPLE__
+	addr->sin6_len = sizeof(struct sockaddr_in6);
+#endif
+	if ((size >= offset + length) && (length == 16))
+		addr->sin6_addr = *(const struct in6_addr*)((const char*)buffer + offset);
+	return addr;
+}
+
+static size_t
+mdns_record_parse_txt(const void* buffer, size_t size, size_t offset, size_t length,
+                      mdns_record_txt_t* records, size_t capacity) {
+	size_t parsed = 0;
+	const char* strdata;
+	size_t separator, sublength;
+	size_t end = offset + length;
+
+	if (size < end)
+		end = size;
+
+	while ((offset < end) && (parsed < capacity)) {
+		strdata = (const char*)buffer + offset;
+		sublength = *(const unsigned char*)strdata;
+
+		++strdata;
+		offset += sublength + 1;
+
+		separator = 0;
+		for (size_t c = 0; c < sublength; ++c) {
+			//DNS-SD TXT record keys MUST be printable US-ASCII, [0x20, 0x7E]
+			if ((strdata[c] < 0x20) || (strdata[c] > 0x7E))
+				break;
+			if (strdata[c] == '=') {
+				separator = c;
+				break;
+			}
+		}
+
+		if (!separator)
+			continue;
+
+		if (separator < sublength) {
+			records[parsed].key.str = strdata;
+			records[parsed].key.length = separator;
+			records[parsed].value.str = strdata + separator + 1;
+			records[parsed].value.length = sublength - (separator + 1);
+		}
+		else {
+			records[parsed].key.str = strdata;
+			records[parsed].key.length = sublength;
+		}
+
+		++parsed;
+	}
+
+	return parsed;	
+}
+
+#ifdef _WIN32
+#undef strncasecmp
+#endif
diff --git a/ctrl/facemgr/src/interfaces/dummy/CMakeLists.txt b/ctrl/facemgr/src/interfaces/dummy/CMakeLists.txt
index 1af3b4b2a..05276bc5a 100644
--- a/ctrl/facemgr/src/interfaces/dummy/CMakeLists.txt
+++ b/ctrl/facemgr/src/interfaces/dummy/CMakeLists.txt
@@ -12,6 +12,7 @@
 # limitations under the License.
 
 list(APPEND HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/dummy.h
 )
 
 list(APPEND SOURCE_FILES
diff --git a/ctrl/facemgr/src/interfaces/dummy/dummy.c b/ctrl/facemgr/src/interfaces/dummy/dummy.c
index b0c558388..6a21792a2 100644
--- a/ctrl/facemgr/src/interfaces/dummy/dummy.c
+++ b/ctrl/facemgr/src/interfaces/dummy/dummy.c
@@ -19,31 +19,101 @@
  */
 
 #include <stdlib.h>
+#include <unistd.h> // close
+
+#include <hicn/facemgr.h>
 
-#include "../../interface.h"
 #include "../../common.h"
-#include "../../event.h"
-#include "../../face.h"
-#include "../../facemgr.h"
+#include "../../facelet.h"
+#include "../../interface.h"
+
+#include "dummy.h"
 
 #define DEFAULT_PORT 9695
 
-int dummy_initialize(interface_t * interface, face_rules_t * rules, void **pdata) {
-    ip_address_t local = IPV4_LOOPBACK;
-    ip_address_t remote = IPV4_LOOPBACK;
-    face_t * face = face_create_udp(&local, DEFAULT_PORT, &remote, DEFAULT_PORT, AF_INET);
-    event_raise(EVENT_TYPE_CREATE, face, interface);
-    return FACEMGR_SUCCESS;
+#define UNUSED(x) ((void)x)
+
+/*
+ * Internal data
+ */
+typedef struct {
+    /* The configuration data will likely be allocated on the stack (or should
+     * be freed) by the caller, we recommend to make a copy of this data.
+     * This copy can further be altered with default values.
+     */
+    dummy_cfg_t cfg;
+
+    /* ... */
+
+    int fd; /* Sample internal data: file descriptor */
+} dummy_data_t;
+
+int dummy_initialize(interface_t * interface, void * cfg)
+{
+    dummy_data_t * data = malloc(sizeof(dummy_data_t));
+    if (!data)
+        goto ERR_MALLOC;
+    interface->data = data;
+
+    /* Use default values for unspecified configuration parameters */
+    if (cfg) {
+        data->cfg = *(dummy_cfg_t *)cfg;
+    } else {
+        memset(&data->cfg, 0, sizeof(data->cfg));
+    }
+
+    /* ... */
+
+    data->fd = 0;
+
+    /* ... */
+
+    /*
+     * We should return a negative value in case of error, and a positive value
+     * otherwise:
+     *  - a file descriptor (>0) will be added to the event loop; or
+     *  - 0 if we don't use any file descriptor
+     */
+    return data->fd;
+
+ERR_MALLOC:
+    return -1;
+}
+
+int dummy_finalize(interface_t * interface)
+{
+    dummy_data_t * data = (dummy_data_t*)interface->data;
+
+    if (data->fd > 0)
+        close(data->fd);
+
+    return 0;
 }
 
-int dummy_finalize(interface_t * interface) {
-    return FACEMGR_SUCCESS;
+int dummy_callback(interface_t * interface)
+{
+    dummy_data_t * data = (dummy_data_t*)interface->data;
+    UNUSED(data);
+
+    /* ... */
+
+    return 0;
+}
+
+int dummy_on_event(interface_t * interface, const facelet_t * facelet)
+{
+    dummy_data_t * data = (dummy_data_t*)interface->data;
+    UNUSED(data);
+
+    /* ... */
+
+    return 0;
 }
 
 interface_ops_t dummy_ops = {
     .type = "dummy",
-    .is_singleton = true,
     .initialize = dummy_initialize,
     .finalize = dummy_finalize,
-    .on_event = NULL,
+    .callback = dummy_callback,
+    .on_event = dummy_on_event,
 };
diff --git a/ctrl/facemgr/src/interface_ops_map.h b/ctrl/facemgr/src/interfaces/dummy/dummy.h
index 2d590390a..22fe5d1a6 100644
--- a/ctrl/facemgr/src/interface_ops_map.h
+++ b/ctrl/facemgr/src/interfaces/dummy/dummy.h
@@ -13,12 +13,22 @@
  * limitations under the License.
  */
 
-#ifndef INTERFACE_OPS_MAP_H
-#define INTERFACE_OPS_MAP_H
+/**
+ * \file dummy.h
+ * \brief Dummy interface
+ *
+ * This class serves as a template to implement new face maanger interfaces, and
+ * can be used for test purposes.
+ */
 
-#include "interface.h"
-#include "util/map.h"
+#ifndef FACEMGR_INTERFACE_DUMMY_H
+#define FACEMGR_INTERFACE_DUMMY_H
 
-TYPEDEF_MAP_H(interface_ops_map, const char *, interface_ops_t *);
+/*
+ * Configuration data
+ */
+typedef struct {
+    /* ... */
+} dummy_cfg_t;
 
-#endif /* INTERFACE_OPS_MAP_H */
+#endif /* FACEMGR_INTERFACE_DUMMY_H */
diff --git a/ctrl/facemgr/src/interfaces/hicn_light/hicn_light.c b/ctrl/facemgr/src/interfaces/hicn_light/hicn_light.c
index 85694573d..e42c6c6ae 100644
--- a/ctrl/facemgr/src/interfaces/hicn_light/hicn_light.c
+++ b/ctrl/facemgr/src/interfaces/hicn_light/hicn_light.c
@@ -18,27 +18,70 @@
  * \brief hICN light interface
  */
 #include <stdbool.h>
-#include <stdlib.h> // arc4random [random, rand]
 #include <stdio.h> // snprintf
 #include <time.h> // time
 
 #include <hicn/ctrl.h>
+#include <hicn/facemgr.h>
+#include <hicn/util/ip_address.h>
+#include <hicn/util/log.h>
 
-#include "../../facemgr.h"
+#include "../../facelet.h"
 #include "../../interface.h"
-#include "../../util/ip_address.h"
-#include "../../util/log.h"
 #include "../../util/map.h"
-#include "../../event.h"
 
 #define DEFAULT_ROUTE_COST 0
 
+typedef enum {
+    HL_STATE_UNDEFINED,
+    HL_STATE_FACES_SENT,
+    HL_STATE_DONE,
+} hl_state_t;
+
 typedef struct {
     hc_sock_t * s;
-    bool busy;
+    hl_state_t state;
 } hl_data_t;
 
-int hl_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
+int hl_process_state(interface_t * interface)
+{
+    hl_data_t * data = (hl_data_t *)interface->data;
+
+    hc_data_t * faces;
+#if 0
+    char buf[MAXSZ_FACE];
+#endif
+
+    switch(data->state)
+    {
+        case HL_STATE_UNDEFINED:
+            if (hc_face_list(data->s, &faces) < 0) {
+                /* Blocking call */
+                printf("Could not retrieve face list\n");
+                return -1;
+            }
+            foreach_face(f, faces) {
+#if 0
+                hc_face_snprintf(buf, MAXSZ_FACE, f);
+                printf("Face: %s\n", buf);
+#endif
+                facelet_t * facelet = facelet_create_from_face(&f->face);
+                facelet_set_event(facelet, FACELET_EVENT_GET);
+                facelet_raise_event(facelet, interface);
+            }
+            break;
+
+        case HL_STATE_FACES_SENT:
+            break;
+
+        default: /* HL_STATE_DONE never called */
+            break;
+    }
+
+    return 0;
+}
+
+int hl_initialize(interface_t * interface, void * cfg)
 {
     hl_data_t * data = malloc(sizeof(hl_data_t));
     if (!data) {
@@ -57,51 +100,52 @@ int hl_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
         goto ERR_CONNECT;
     }
 
-    data->busy = false;
+    data->state = HL_STATE_UNDEFINED;
+
+    interface->data = data;
 
-    *pdata = data;
+    hl_process_state(interface);
 
-    return FACEMGR_SUCCESS;
+    return 0;
 
 ERR_CONNECT:
     hc_sock_free(data->s);
 ERR_SOCK:
     free(data);
 ERR_MALLOC:
-    return FACEMGR_FAILURE;
+    return -1;
 }
 
 int hl_finalize(interface_t * interface)
 {
     //hc_data_t * data = interface->data;
     //hc_sock_close(data->s);
-    return FACEMGR_SUCCESS;
+    return 0;
 }
 
-int hl_on_event(interface_t * interface, const event_t * event)
+int hl_on_event(interface_t * interface, const facelet_t * facelet)
 {
-    hc_face_t face;
+    hc_face_t hc_face;
     hc_route_t route;
     int rc;
     hl_data_t * data = (hl_data_t *)interface->data;
 
-    /* XXX We need  a queue or a socket pool to process concurrent events */
-    if (data->busy) {
-        ERROR("[hicn_light] Busy !");
-        return FACEMGR_FAILURE;
-    }
+    face_t * face = NULL;
+    if (facelet_get_face(facelet, &face) < 0)
+        return -1;
+
+    switch(facelet_get_event(facelet)) {
 
-    switch(event->type) {
-        case EVENT_TYPE_CREATE:
+        case FACELET_EVENT_CREATE:
 
             /* Create face */
-            face.face = *event->face;
-            rc = hc_face_create(data->s, &face);
+            hc_face.face = *face;
+            rc = hc_face_create(data->s, &hc_face);
             if (rc < 0) {
                 ERROR("Failed to create face\n");
                 goto ERR;
             }
-            DEBUG("Created face id=%d\n", face.id);
+            INFO("Created face id=%d\n", hc_face.id);
 
 #if 0
             /* Add default route v4 */
@@ -134,88 +178,84 @@ int hl_on_event(interface_t * interface, const event_t * event)
             }
 #endif
 
-#if 1
-            /* We add routes based on face tags */
-
-            if (policy_tags_has(event->face->tags, POLICY_TAG_TRUSTED)) {
-                route = (hc_route_t) {
-                    .face_id = face.id,
-                    .family = AF_INET6,
-                    .len = 16,
-                    .cost = DEFAULT_ROUTE_COST,
-                };
-                if (ip_address_pton("b001::", &route.remote_addr) < 0) {
-                    ERROR("Failed to convert prefix");
-                    goto ERR;
-                }
-                if (hc_route_create(data->s, &route) < 0) {
-                    ERROR("Failed to create hICN/IPv6 route");
-                    goto ERR;
-                }
+            /* Adding default route */
+            route = (hc_route_t) {
+                .face_id = hc_face.id,
+                .family = AF_INET6,
+                .len = 0,
+                .cost = DEFAULT_ROUTE_COST,
+            };
+            if (ip_address_pton("::", &route.remote_addr) < 0) {
+                ERROR("Failed to convert prefix");
+                goto ERR;
+            }
+            if (hc_route_create(data->s, &route) < 0) {
+                ERROR("Failed to create hICN/IPv6 route");
+                goto ERR;
+            }
 
-                route = (hc_route_t) {
-                    .face_id = face.id,
-                    .family = AF_INET6,
-                    .len = 16,
-                    .cost = DEFAULT_ROUTE_COST,
-                };
-                if (ip_address_pton("d001::", &route.remote_addr) < 0) {
-                    ERROR("Failed to convert prefix");
+            break;
+
+        case FACELET_EVENT_DELETE:
+            /* Removing a face should also remove associated routes */
+            /* Create face */
+            hc_face.face = *face;
+            rc = hc_face_delete(data->s, &hc_face);
+            if (rc < 0) {
+                ERROR("Failed to delete face\n");
+                goto ERR;
+            }
+            INFO("Deleted face id=%d\n", hc_face.id);
+            break;
+
+        case FACELET_EVENT_UPDATE:
+            /* Currently, only admin_state is supported */
+            if (facelet_get_admin_state_status(facelet) == FACELET_ATTR_STATUS_DIRTY) {
+                hc_face.face = *face;
+                hc_face_t * face_found;
+                rc = hc_face_get(data->s, &hc_face, &face_found);
+                if (rc < 0) {
+                    ERROR("Failed to find face\n");
                     goto ERR;
                 }
-                if (hc_route_create(data->s, &route) < 0) {
-                    ERROR("Failed to create hICN/IPv6 route");
+                if (!face_found) {
+                    ERROR("Face to update has not been found");
                     goto ERR;
                 }
+                char conn_id_or_name[NAME_LEN];
+                snprintf(conn_id_or_name, NAME_LEN, "%d", face_found->id);
+                free(face_found);
+                printf("Face id = %d\n", face_found->id);
 
-            } else {
-
-                route = (hc_route_t) {
-                    .face_id = face.id,
-                    .family = AF_INET6,
-                    .len = 16,
-                    .cost = DEFAULT_ROUTE_COST,
-                };
-                if (ip_address_pton("c001::", &route.remote_addr) < 0) {
-                    ERROR("Failed to convert prefix");
+                face_state_t admin_state;
+                if (facelet_get_admin_state(facelet, &admin_state) < 0) {
+                    ERROR("Failed to retrieve facelet admin state");
                     goto ERR;
                 }
-                if (hc_route_create(data->s, &route) < 0) {
-                    ERROR("Failed to create hICN/IPv6 route");
+
+                printf("Setting admin state");
+                if (hc_connection_set_admin_state(data->s, conn_id_or_name, admin_state) < 0) {
+                    ERROR("Failed to update admin state");
                     goto ERR;
                 }
+                INFO("Admin state updated");
             }
-#endif
-
-            break;
-
-        case EVENT_TYPE_DELETE:
-            /* Removing a face should also remove associated routes */
-            /* Create face */
-            face.face = *event->face;
-            rc = hc_face_delete(data->s, &face);
-            if (rc < 0) {
-                ERROR("Failed to delete face\n");
-                goto ERR;
-            }
-            INFO("Deleted face id=%d\n", face.id);
             break;
 
         default:
-            ERROR("Unknown event %s\n", event_type_str[event->type]);
+            ERROR("Unknown event %s\n", facelet_event_str[facelet_get_event(facelet)]);
             /* Unsupported events */
             goto ERR;
     }
 
-    return FACEMGR_SUCCESS;
+    return 0;
 
 ERR:
-    return FACEMGR_FAILURE;
+    return -1;
 }
 
 const interface_ops_t hicn_light_ops = {
     .type = "hicn_light",
-    .is_singleton = false,
     .initialize = hl_initialize,
     .finalize = hl_finalize,
     .on_event = hl_on_event,
diff --git a/ctrl/facemgr/src/interfaces/netlink/netlink.c b/ctrl/facemgr/src/interfaces/netlink/netlink.c
index 5bf0baf9f..08cbe4d3b 100644
--- a/ctrl/facemgr/src/interfaces/netlink/netlink.c
+++ b/ctrl/facemgr/src/interfaces/netlink/netlink.c
@@ -18,34 +18,120 @@
  * \brief Netlink interface
  */
 
+#include <assert.h>
 #include <linux/rtnetlink.h>
+#include <net/if_arp.h> // ARPHRD_LOOPBACK
 #include <sys/types.h> // getpid
 #include <unistd.h> // getpid
 
-#include "../../event.h"
-#include "../../facemgr.h"
+#include <hicn/facemgr.h>
+#include <hicn/util/ip_address.h>
+#include <hicn/util/log.h>
+
+#include "../../common.h"
+#include "../../facelet.h"
 #include "../../interface.h"
 
+typedef enum {
+    NL_STATE_UNDEFINED,
+    NL_STATE_LINK_SENT,
+    NL_STATE_ADDR_SENT,
+    NL_STATE_DONE,
+} nl_state_t;
+
 /* Internal data storage */
 typedef struct {
     int fd;
+    nl_state_t state;
 } nl_data_t;
 
-// little helper to parsing message using netlink macroses
-void parseRtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len)
+static inline void parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len,
+	unsigned short flags)
 {
+    unsigned short type;
+
     memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
+    while (RTA_OK(rta, len)) {
+        type = rta->rta_type & ~flags;
+        if (type <= max)
+            tb[type] = rta;
+        rta = RTA_NEXT(rta, len);
+    }
+}
+
+int nl_process_state(interface_t * interface)
+{
+    nl_data_t * data = (nl_data_t*)interface->data;
+    int rc;
+
+    switch(data->state) {
+        case NL_STATE_UNDEFINED:
+        {
+            struct {
+                struct nlmsghdr  header;
+                struct rtgenmsg payload;
+            } msg2 = {
+                .header = {
+                    .nlmsg_len = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+                    .nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP,
+                    .nlmsg_type = RTM_GETLINK,
+                    .nlmsg_pid = getpid(),
+                    .nlmsg_seq = 3,
+                },
+                .payload = {
+                    .rtgen_family = AF_PACKET,
+                }
+            };
+
+            rc = send(data->fd, &msg2, msg2.header.nlmsg_len, 0);
+            if (rc < 0)
+                printf("E: Error sending netlink query\n");
+
+            data->state = NL_STATE_LINK_SENT;
+            break;
+        }
+
+        case NL_STATE_LINK_SENT:
+        {
+            /* Issue a first query to receive static state */
+            struct {
+                struct nlmsghdr  header;
+                struct ifaddrmsg payload;
+            } msg = {
+                .header = {
+                    .nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
+                    .nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP,
+                    .nlmsg_type = RTM_GETADDR,
+                    .nlmsg_pid = getpid(),
+                    .nlmsg_seq = 7,
+                },
+                .payload = {
+                    .ifa_family = AF_INET,
+                }
+            };
+
+            rc = send(data->fd, &msg, msg.header.nlmsg_len, 0);
+            if (rc < 0)
+                printf("E: Error sending netlink query\n");
+
+            data->state = NL_STATE_ADDR_SENT;
+            break;
+        }
 
-    while (RTA_OK(rta, len)) {  // while not end of the message
-        if (rta->rta_type <= max) {
-            tb[rta->rta_type] = rta; // read attr
+        case NL_STATE_ADDR_SENT:
+        {
+            data->state = NL_STATE_DONE;
+            break;
         }
-        rta = RTA_NEXT(rta,len);    // get next attr
+
+        default: /* NL_STATE_DONE never called */
+            break;
     }
-}
 
+    return 0;
+}
 
-int nl_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
+int nl_initialize(interface_t * interface, void * cfg)
 {
     nl_data_t * data = malloc(sizeof(nl_data_t));
     if (!data)
@@ -57,31 +143,194 @@ int nl_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
         goto ERR_SOCKET;
     }
 
+    data->state = NL_STATE_UNDEFINED;
+
     struct sockaddr_nl  local;  // local addr struct
     memset(&local, 0, sizeof(local));
     local.nl_family = AF_NETLINK;       // set protocol family
-    local.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE;   // set groups we interested in
+    // NOTE: RTNLGRP_LINK replaces obsolete RTMGRP_LINK, etc
+    local.nl_groups = 0
+        | RTMGRP_LINK
+        | RTMGRP_IPV4_IFADDR
+        | RTMGRP_IPV6_IFADDR
+#if 0
+        | RTMGRP_IPV4_ROUTE;
+        | RTMGRP_IPV6_ROUTE;
+#endif
+        ;
     local.nl_pid = getpid();    // set out id using current process id
 
-
     if (bind(data->fd, (struct sockaddr*)&local, sizeof(local)) < 0) {     // bind socket
         printf("Failed to bind netlink socket: %s\n", (char*)strerror(errno));
         goto ERR_BIND;
     }
 
-    /* Issue a first query to receive static state */
+    interface->data = data;
 
+    nl_process_state(interface);
 
-    *pdata = data;
-    return data->fd; // FACEMGR_SUCCESS;
+    return data->fd; // 0;
 
 ERR_BIND:
     close(data->fd);
 ERR_SOCKET:
     free(data);
 ERR_MALLOC:
-    *pdata = NULL;
-    return FACEMGR_FAILURE;
+    return -1;
+}
+
+int parse_link(struct nlmsghdr * h, facelet_t ** facelet,
+        char * interface_name, size_t interface_name_size,
+        bool * up, bool * running)
+{
+    struct ifinfomsg *ifi;  // structure for network interface info
+    struct rtattr *tb[IFLA_MAX + 1];
+
+    assert(facelet);
+
+    ifi = (struct ifinfomsg*) NLMSG_DATA(h);    // get information about changed network interface
+    parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), IFLA_PAYLOAD(h), 1<<15);
+
+    if (interface_name) {
+        assert(tb[IFLA_IFNAME]);
+        snprintf(interface_name, interface_name_size, "%s", (char*)RTA_DATA(tb[IFLA_IFNAME]));
+    }
+
+    if (up)
+        *up = ifi->ifi_flags & IFF_UP;
+    if (running)
+        *running = ifi->ifi_flags & IFF_RUNNING;
+
+
+    *facelet = facelet_create();
+    netdevice_t * netdevice = netdevice_create_from_name(interface_name);
+    if (!netdevice)
+        goto ERROR;
+    int rc = facelet_set_netdevice(*facelet, *netdevice);
+    if (rc < 0)
+        goto ERROR;
+
+// FIXME Tags
+#if 0
+    /* This is the only opportunity to identify a loopback interface on both
+     * linux _and_ android, as NetworkCapabilities does not have a flag for
+     * LOOPBACK... */
+    if (ifi->ifi_type==ARPHRD_LOOPBACK) {
+        DEBUG("loopback");
+    }
+
+#ifdef IFLA_WIRELESS
+    /*
+     * This signals a wirless event, but it typically occurs _after_ a face is
+     * created... we might need to update an existing face by setting a tag...
+     * or find a way to exploit this flag before actually creating the face...
+     */
+    if (tb[IFLA_WIRELESS])
+        DEBUG("wireless!!!");
+#else
+#warning "IFLA_WIRELESS not supported on this platform"
+#endif /* IFLA_WIRELESS */
+
+#endif
+
+    // TODO
+    //  - ifi_change
+    //  - IFLA_PROTINFO
+
+    return 0;
+
+ERROR:
+    facelet_free(*facelet);
+    *facelet = NULL;
+
+    return -1;
+}
+
+int parse_addr(struct nlmsghdr * h, facelet_t ** facelet,
+        char * interface_name, size_t interface_name_size,
+        char * interface_address, size_t interface_address_size)
+{
+    ip_address_t local_addr = IP_ADDRESS_EMPTY;
+    struct ifaddrmsg *ifa; // structure for network interface data
+    struct rtattr *tba[IFA_MAX+1];
+
+    assert(facelet);
+
+    ifa = (struct ifaddrmsg*)NLMSG_DATA(h); // get data from the network interface
+
+    parse_rtattr(tba, IFA_MAX, IFA_RTA(ifa), IFA_PAYLOAD(h), 0);
+
+    /* FIXME
+     *
+     * IFA_LOCAL ok for v4, not there for v6
+     *
+     * IFA_ADDRESS seems to work for both but with the following precaution
+     *
+     * IFA_ADDRESS is prefix address, rather than local interface address.
+     * It makes no difference for normally configured broadcast interfaces,
+     * but for point-to-point IFA_ADDRESS is DESTINATION address,
+     * local address is supplied in IFA_LOCAL attribute.
+     */
+    if (!tba[IFA_ADDRESS]) {
+        ERROR("[netlink.parse_addr] No local address");
+        return -1;
+    }
+
+    switch(ifa->ifa_family) {
+        case AF_INET:
+            local_addr.v4.as_inaddr = *(struct in_addr*)RTA_DATA(tba[IFA_ADDRESS]);
+            break;
+        case AF_INET6:
+            local_addr.v6.as_in6addr = *(struct in6_addr*)RTA_DATA(tba[IFA_ADDRESS]);
+            break;
+        default:
+            return 0;
+    }
+
+#if 0 /* Not working for v6 */
+    if (interface_name) {
+        assert(tba[IFLA_IFNAME]);
+        snprintf(interface_name, interface_name_size, "%s", (char*)RTA_DATA(tba[IFLA_IFNAME]));
+    }
+#endif
+
+    /* See comment in parse_link */
+    if (interface_address) {
+        assert(tba[IFA_ADDRESS]);
+        ip_address_snprintf(interface_address, interface_address_size, &local_addr, ifa->ifa_family);
+    }
+
+    netdevice_t * netdevice = netdevice_create_from_index(ifa->ifa_index);
+    if (!netdevice) {
+        ERROR("[netlink.parse_addr] error creating netdevice '%s'", interface_name);
+        goto ERROR;
+    }
+
+    if (interface_name) {
+        snprintf(interface_name, interface_name_size, "%s", netdevice->name);
+    }
+
+    *facelet = facelet_create();
+    if (facelet_set_netdevice(*facelet, *netdevice) < 0) {
+        ERROR("[netlink.parse_addr] error setting netdevice");
+        goto ERROR;
+    }
+    if (facelet_set_family(*facelet, ifa->ifa_family) < 0) {
+        ERROR("[netlink.parse_addr] error setting family");
+        goto ERROR;
+    }
+    if (facelet_set_local_addr(*facelet, local_addr) < 0) {
+        ERROR("[netlink.parse_addr] error setting local address");
+        goto ERROR;
+    }
+
+    return 0;
+
+ERROR:
+    facelet_free(*facelet);
+    *facelet = NULL;
+
+    return -1;
 }
 
 int nl_callback(interface_t * interface)
@@ -97,13 +346,12 @@ int nl_callback(interface_t * interface)
     iov.iov_len = sizeof(buf);  // set size
 
     // initialize protocol message header
-    struct msghdr msg;
-    {
-        msg.msg_name = &local;                  // local address
-        msg.msg_namelen = sizeof(local);        // address size
-        msg.msg_iov = &iov;                     // io vector
-        msg.msg_iovlen = 1;                     // io size
-    }
+    struct msghdr msg = {
+        .msg_name = &local,                  // local address
+        .msg_namelen = sizeof(local),        // address size
+        .msg_iov = &iov,                     // io vector
+        .msg_iovlen = 1,                     // io size
+    };
 
     ssize_t status = recvmsg(data->fd, &msg, 0);
 
@@ -115,12 +363,12 @@ int nl_callback(interface_t * interface)
 */
 
         printf("Failed to read netlink: %s", (char*)strerror(errno));
-        return FACEMGR_FAILURE;
+        return -1;
     }
 
     if (msg.msg_namelen != sizeof(local)) { // check message length, just in case
         printf("Invalid length of the sender address struct\n");
-        return FACEMGR_FAILURE;
+        return -1;
     }
 
     // message parser
@@ -129,103 +377,122 @@ int nl_callback(interface_t * interface)
     for (h = (struct nlmsghdr*)buf; status >= (ssize_t)sizeof(*h); ) {   // read all messagess headers
         int len = h->nlmsg_len;
         int l = len - sizeof(*h);
-        char *ifName = NULL;
 
         if ((l < 0) || (len > status)) {
             printf("Invalid message length: %i\n", len);
             continue;
         }
 
-        // now we can check message type
-        if ((h->nlmsg_type == RTM_NEWROUTE) || (h->nlmsg_type == RTM_DELROUTE)) { // some changes in routing table
-            printf("Routing table was changed\n");
-        } else {    // in other case we need to go deeper
-            char *ifUpp;
-            char *ifRunn;
-            struct ifinfomsg *ifi;  // structure for network interface info
-            struct rtattr *tb[IFLA_MAX + 1];
-
-            ifi = (struct ifinfomsg*) NLMSG_DATA(h);    // get information about changed network interface
-
-            parseRtattr(tb, IFLA_MAX, IFLA_RTA(ifi), h->nlmsg_len);  // get attributes
-
-            if (tb[IFLA_IFNAME]) {  // validation
-                ifName = (char*)RTA_DATA(tb[IFLA_IFNAME]); // get network interface name
-            }
-
-            if (ifi->ifi_flags & IFF_UP) { // get UP flag of the network interface
-                ifUpp = (char*)"UP";
-            } else {
-                ifUpp = (char*)"DOWN";
-            }
+        switch(h->nlmsg_type) {
+#if 0
+            case RTM_NEWROUTE:
+            case RTM_DELROUTE:
+                DEBUG("Routing table was changed");
+                break;
+#endif
+
+            case RTM_DELADDR:
+            {
+                facelet_t * facelet = NULL;
+                char interface_name[IFNAMSIZ];
+                char interface_address[MAXSZ_IP_ADDRESS] = {0};
+
+                if (parse_addr(h, &facelet, interface_name, IFNAMSIZ,
+                            interface_address, MAXSZ_IP_ADDRESS) < 0) {
+                    ERROR("Error parsing address message");
+                    break;
+                }
 
-            if (ifi->ifi_flags & IFF_RUNNING) { // get RUNNING flag of the network interface
-                ifRunn = (char*)"RUNNING";
-            } else {
-                ifRunn = (char*)"NOT RUNNING";
+                DEBUG("Interface %s: address was removed", interface_name);
+                if (facelet) {
+                    facelet_set_event(facelet, FACELET_EVENT_DELETE);
+                    facelet_raise_event(facelet, interface);
+                }
+                break;
             }
 
-            char ifAddress[256] = {0};    // network addr
-            struct ifaddrmsg *ifa; // structure for network interface data
-            struct rtattr *tba[IFA_MAX+1];
+            case RTM_NEWADDR:
+            {
+                facelet_t * facelet = NULL;
+                char interface_name[IFNAMSIZ];
+                char interface_address[MAXSZ_IP_ADDRESS] = {0};
 
-            ifa = (struct ifaddrmsg*)NLMSG_DATA(h); // get data from the network interface
+                if (parse_addr(h, &facelet, interface_name, IFNAMSIZ,
+                            interface_address, MAXSZ_IP_ADDRESS) < 0) {
+                    ERROR("Error parsing address message");
+                    break;
+                }
 
-            parseRtattr(tba, IFA_MAX, IFA_RTA(ifa), h->nlmsg_len);
+                DEBUG("Interface %s: new address was assigned: %s", interface_name, interface_address);
 
-            if (tba[IFA_LOCAL]) {
-                inet_ntop(AF_INET, RTA_DATA(tba[IFA_LOCAL]), ifAddress, sizeof(ifAddress)); // get IP addr
+                if (facelet) {
+                    facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+                    facelet_raise_event(facelet, interface);
+                }
+                break;
             }
 
-            face_t * face;
-
-            if (tba[IFA_LOCAL]) {
-                ip_address_t local_addr = IP_ADDRESS_EMPTY;
-                switch(ifa->ifa_family) {
-                    case AF_INET:
-                        local_addr.v4.as_inaddr = *(struct in_addr*)RTA_DATA(tba[IFA_LOCAL]);
-                        break;
-                    case AF_INET6:
-                        local_addr.v6.as_in6addr = *(struct in6_addr*)RTA_DATA(tba[IFA_LOCAL]);
-                        break;
-                    default:
-                        continue;
+            case RTM_DELLINK:
+            {
+                facelet_t * facelet = NULL;
+                char interface_name[IFNAMSIZ];
+                if (parse_link(h, &facelet, interface_name, IFNAMSIZ,
+                            NULL, NULL) < 0) {
+                    ERROR("Error parsing link message");
+                    break;
+                }
+                if (facelet) {
+                    facelet_set_event(facelet, FACELET_EVENT_DELETE);
+                    facelet_raise_event(facelet, interface);
                 }
-                face = face_create_udp(&local_addr, 0, &IP_ADDRESS_EMPTY, 0, ifa->ifa_family);
-            } else {
-                face = NULL;
+
+                DEBUG("Network interface %s was removed", interface_name);
+                break;
             }
 
-            switch (h->nlmsg_type) {
-                case RTM_DELADDR:
-                    // DOES NOT SEEM TO BE TRIGGERED
-                    printf("Interface %s: address was removed\n", ifName);
-                    if (face)
-                        event_raise(EVENT_TYPE_DELETE, face, interface);
-                    break;
+            case RTM_NEWLINK:
+            {
+                facelet_t * facelet = NULL;
+                char interface_name[IFNAMSIZ];
+                bool up, running;
 
-                case RTM_DELLINK:
-                    printf("Network interface %s was removed\n", ifName);
+                if (parse_link(h, &facelet, interface_name, IFNAMSIZ, &up, &running) < 0) {
+                    ERROR("Error parsing link message");
                     break;
+                }
 
-                case RTM_NEWLINK:
-                    printf("New network interface %s, state: %s %s\n", ifName, ifUpp, ifRunn);
-                    // UP RUNNING
-                    // UP NOT RUNNING
-                    // DOWN NOT RUNNING
-                    if (!(ifi->ifi_flags & IFF_UP) || (!(ifi->ifi_flags & IFF_RUNNING))) {
-                        if(face)
-                            event_raise(EVENT_TYPE_DELETE, face, interface);
+                // UP RUNNING
+                // UP NOT RUNNING
+                // DOWN NOT RUNNING
+                DEBUG("New network interface %s, state: %s %s", interface_name,
+                        up ? "UP" : "DOWN",
+                        running ? "RUNNING" : "NOT_RUNNING");
+
+                if (facelet && up && running) {
+                    facelet_set_event(facelet, FACELET_EVENT_CREATE);
+                    facelet_t * facelet6 = facelet_dup(facelet);
+                    if (!facelet6) {
+                        ERROR("Could not duplicate face for v6");
+                        break;
                     }
-                    break;
 
-                case RTM_NEWADDR:
-                    printf("Interface %s: new address was assigned: %s\n", ifName, ifAddress);
-                    printf("NEW FACE\n");
-                    if (face)
-                        event_raise(EVENT_TYPE_CREATE, face, interface);
-                    break;
+                    facelet_set_family(facelet, AF_INET);
+                    facelet_raise_event(facelet, interface);
+
+                    facelet_set_family(facelet6, AF_INET6);
+                    facelet_raise_event(facelet6, interface);
+                }
+                break;
             }
+
+            case NLMSG_ERROR:
+                break;
+            case NLMSG_DONE:
+                nl_process_state(interface);
+                break;
+            default:
+                break;
+
         }
 
         status -= NLMSG_ALIGN(len); // align offsets by the message length, this is important
@@ -233,20 +500,19 @@ int nl_callback(interface_t * interface)
         h = (struct nlmsghdr*)((char*)h + NLMSG_ALIGN(len));    // get next message
     }
 
-    return FACEMGR_SUCCESS;
+    return 0;
 }
 
 int nl_finalize(interface_t * interface)
 {
     nl_data_t * data = (nl_data_t*)interface->data;
     close(data->fd);
-    return FACEMGR_SUCCESS;
+    return 0;
 
 }
 
 const interface_ops_t netlink_ops = {
     .type = "netlink",
-    .is_singleton = true,
     .initialize = nl_initialize,
     .callback = nl_callback,
     .finalize = nl_finalize,
diff --git a/ctrl/facemgr/src/interfaces/network_framework/CMakeLists.txt b/ctrl/facemgr/src/interfaces/network_framework/CMakeLists.txt
index ca6659342..e8b0144b1 100644
--- a/ctrl/facemgr/src/interfaces/network_framework/CMakeLists.txt
+++ b/ctrl/facemgr/src/interfaces/network_framework/CMakeLists.txt
@@ -17,6 +17,7 @@ if (NOT NETWORK_LIBRARY)
 endif()
 
 list(APPEND HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/network_framework.h
 )
 
 list(APPEND SOURCE_FILES
diff --git a/ctrl/facemgr/src/interfaces/network_framework/network_framework.c b/ctrl/facemgr/src/interfaces/network_framework/network_framework.c
index 8a33129b4..4a9d24f61 100644
--- a/ctrl/facemgr/src/interfaces/network_framework/network_framework.c
+++ b/ctrl/facemgr/src/interfaces/network_framework/network_framework.c
@@ -24,14 +24,17 @@
 #include <Network/Network.h>
 #include <err.h>
 
+#include <hicn/facemgr.h>
+#include <hicn/util/token.h>
+#include <hicn/util/log.h>
+
 #include "../../common.h"
-#include "../../event.h"
-#include "../../face.h"
-#include "../../facemgr.h"
+#include <hicn/ctrl/face.h>
+#include "../../facelet.h"
 #include "../../interface.h"
 #include "../../util/map.h"
-#include "../../util/token.h"
-#include "../../util/log.h"
+
+#include "network_framework.h"
 
 /*
  * Bonjour service discovery for hICN forwarder
@@ -107,7 +110,7 @@ cmp_iface(const nw_interface_t iface1, const nw_interface_t iface2)
 //TYPEDEF_MAP(map_cnx, nw_interface_t, nw_connection_t, cmp_iface);
 
 typedef struct {
-    face_rules_t * rules; /**< Face creation rules */
+    network_framework_cfg_t cfg;
     nw_path_monitor_t pm; /**< Main path monitor */
 //    map_cnx_t map_cnx;    /**< Map: interface -> connection for face status */
 } nf_data_t;
@@ -209,97 +212,90 @@ dump_connection(nw_connection_t connection, int indent)
     nw_release(path);
 }
 
-face_t *
-face_create_from_connection(nw_connection_t connection, face_rules_t * rules)
+facelet_t *
+facelet_create_from_connection(nw_connection_t connection)
 {
-    face_t * face;
-    struct sockaddr_in * sin;
-    struct sockaddr_in6 * sin6;
+    facelet_t * facelet;
+    ip_address_t local_addr, remote_addr;
+    uint16_t remote_port;
 
     nw_path_t path = nw_connection_copy_current_path(connection);
     nw_endpoint_t local = nw_path_copy_effective_local_endpoint(path);
     nw_endpoint_t remote = nw_path_copy_effective_remote_endpoint(path);
     __block nw_interface_t interface;
 
-    const struct sockaddr * local_addr = nw_endpoint_get_address(local);
-    const struct sockaddr * remote_addr = nw_endpoint_get_address(remote);
+    const struct sockaddr * local_sa = nw_endpoint_get_address(local);
+    const struct sockaddr * remote_sa = nw_endpoint_get_address(remote);
 
-    assert (local_addr->sa_family == remote_addr->sa_family);
-    switch(local_addr->sa_family) {
+    assert (local_sa->sa_family == remote_sa->sa_family);
+    switch(local_sa->sa_family) {
         case AF_INET:
-            sin = (struct sockaddr_in *)local_addr;
-            sin->sin_port = htons(DEFAULT_PORT);
-            sin = (struct sockaddr_in *)remote_addr;
-            sin->sin_port = htons(DEFAULT_PORT);
+            local_addr.v4.as_inaddr = ((struct sockaddr_in *)local_sa)->sin_addr;
+            remote_addr.v4.as_inaddr = ((struct sockaddr_in *)remote_sa)->sin_addr;
+            remote_port = ((struct sockaddr_in *)remote_sa)->sin_port;
             break;
         case AF_INET6:
-            sin6 = (struct sockaddr_in6 *)local_addr;
-            sin6->sin6_port = htons(DEFAULT_PORT);
-            sin6 = (struct sockaddr_in6 *)remote_addr;
-            sin6->sin6_port = htons(DEFAULT_PORT);
+            local_addr.v6.as_in6addr = ((struct sockaddr_in6 *)local_sa)->sin6_addr;
+            remote_addr.v6.as_in6addr = ((struct sockaddr_in6 *)remote_sa)->sin6_addr;
+            remote_port = ((struct sockaddr_in6 *)remote_sa)->sin6_port;
             break;
         default:
-            ERROR("Unsupported address family: %d\n", local_addr->sa_family);
+            ERROR("Unsupported address family: %d\n", local_sa->sa_family);
             return NULL;
     }
 
-    face = face_create_udp_sa(local_addr, remote_addr);
 
     /* Retrieving path interface type (a single one expected */
     nw_path_enumerate_interfaces(path, (nw_path_enumerate_interfaces_block_t)^(nw_interface_t path_interface) {
         interface = path_interface;
         return false;
     });
-    nw_interface_type_t type = nw_interface_get_type(interface);
-    const char * name = nw_interface_get_name(interface);
-
-    policy_tags_t tags = POLICY_TAGS_EMPTY;
 
-    if (rules) {
-        if (!FACEMGR_IS_ERROR(face_rules_get(rules, name, &tags)))
-            goto SET_TAGS;
+    const char * name = nw_interface_get_name(interface);
+    netdevice_t netdevice;
+    snprintf(netdevice.name, IFNAMSIZ, "%s", name);
+    netdevice_update_index(&netdevice);
 
-        char tags[MAXSZ_POLICY_TAGS];
-        policy_tags_snprintf(tags, MAXSZ_POLICY_TAGS, face->tags);
-    }
+    netdevice_type_t netdevice_type;
+    nw_interface_type_t type = nw_interface_get_type(interface);
 
     switch(type) {
         case INTERFACE_TYPE_OTHER:
-            policy_tags_add(&tags, POLICY_TAG_WIFI);
-            policy_tags_add(&tags, POLICY_TAG_TRUSTED);
+            netdevice_type = NETDEVICE_TYPE_UNDEFINED;
             break;
         case INTERFACE_TYPE_WIFI:
-            // XXX disambuiguate on interface name for now.
-            policy_tags_add(&tags, POLICY_TAG_WIFI);
-            policy_tags_add(&tags, POLICY_TAG_TRUSTED);
+            netdevice_type = NETDEVICE_TYPE_WIFI;
             break;
         case INTERFACE_TYPE_CELLULAR:
-            policy_tags_add(&tags, POLICY_TAG_CELLULAR);
+            netdevice_type = NETDEVICE_TYPE_CELLULAR;
             break;
         case INTERFACE_TYPE_WIRED:
-            /* Both VPN and USB WiFi are not well detected on MacOS. For USB
-             * WiFi, we currently have no solution. For VPN, until we have
-             * proper support of AnyC APIs, we need to have heuristics to
-             * determine VPN interfaces. */
-            policy_tags_add(&tags, POLICY_TAG_WIRED);
-            policy_tags_add(&tags, POLICY_TAG_TRUSTED);
+            netdevice_type = NETDEVICE_TYPE_WIRED;
             break;
         case INTERFACE_TYPE_LOOPBACK:
-            tags = POLICY_TAGS_EMPTY;
+            netdevice_type = NETDEVICE_TYPE_LOOPBACK;
             break;
         default:
             break;
 
     }
 
-SET_TAGS:
-    face_set_tags(face, tags);
-
     nw_release(local);
     nw_release(remote);
     nw_release(path);
 
-    return face;
+    facelet = facelet_create();
+    if (!facelet)
+        return NULL;
+
+    facelet_set_netdevice(facelet, netdevice);
+    facelet_set_netdevice_type(facelet, netdevice_type);
+    facelet_set_family(facelet, local_sa->sa_family);
+    facelet_set_local_addr(facelet, local_addr);
+    facelet_set_remote_addr(facelet, remote_addr);
+    facelet_set_remote_port(facelet, remote_port);
+
+    return facelet;
 }
 
 void
@@ -340,9 +336,11 @@ on_connection_state_event(interface_t * interface, nw_interface_t iface,
                 dump_connection(cnx, 1);
             });
 #endif
-            nf_data_t * data = (nf_data_t*)interface->data;
-            face_t * face = face_create_from_connection(cnx, data->rules);
-            event_raise(EVENT_TYPE_CREATE, face, interface);
+            facelet_t * facelet = facelet_create_from_connection(cnx);
+            if (!facelet)
+                return;
+            facelet_set_event(facelet, FACELET_EVENT_CREATE);
+            facelet_raise_event(facelet, interface);
             break;
             }
         case nw_connection_state_failed:
@@ -482,14 +480,11 @@ void on_interface_event(interface_t * interface, nw_interface_t iface)
          * This is the first time we have a connection with address and port
          * and thus the full identification of an hICN face
          */
-        nf_data_t * data = (nf_data_t*)interface->data;
-        face_t * face = face_create_from_connection(connection, data->rules);
-        //event_raise(value ? EVENT_TYPE_SET_UP : EVENT_TYPE_SET_DOWN, face, interface);
-        if(value) {
-            event_raise(EVENT_TYPE_CREATE, face, interface);
-        } else {
-            event_raise(EVENT_TYPE_DELETE, face, interface);
-        }
+        facelet_t * facelet = facelet_create_from_connection(connection);
+        if (!facelet)
+            return;
+        facelet_set_event(facelet, value ? FACELET_EVENT_CREATE : FACELET_EVENT_DELETE);
+        facelet_raise_event(facelet, interface);
 
     });
 
@@ -528,13 +523,16 @@ void on_path_event(interface_t * interface, nw_path_t path)
 
 }
 
-int nf_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
+int nf_initialize(interface_t * interface, void * cfg)
 {
     nf_data_t * data = malloc(sizeof(nf_data_t));
     if (!data)
         goto ERR_MALLOC;
 
-    data->rules = rules;
+    if (cfg)
+        data->cfg = * (network_framework_cfg_t *)cfg;
+    else
+        data->cfg.rules = NULL;
 
     data->pm = nw_path_monitor_create();
     if (!data->pm)
@@ -552,14 +550,13 @@ int nf_initialize(interface_t * interface, face_rules_t * rules, void ** pdata)
     DEBUG("Starting network path monitor");
     nw_path_monitor_start(data->pm);
 
-    *pdata = data;
-    return FACEMGR_SUCCESS;
+    interface->data = data;
+    return 0;
 
 ERR_PM:
     free(data);
 ERR_MALLOC:
-    *pdata = NULL;
-    return FACEMGR_FAILURE;
+    return -1;
 }
 
 int nf_finalize(interface_t * interface)
@@ -569,12 +566,11 @@ int nf_finalize(interface_t * interface)
         nw_path_monitor_cancel(data->pm);
         data->pm = NULL;
     }
-    return FACEMGR_SUCCESS;
+    return 0;
 }
 
 const interface_ops_t network_framework_ops = {
     .type = "network_framework",
-    .is_singleton = true,
     .initialize = nf_initialize,
     .finalize = nf_finalize,
     .on_event = NULL,
diff --git a/ctrl/facemgr/src/face_cache.c b/ctrl/facemgr/src/interfaces/network_framework/network_framework.h
index bee36af30..edb35e904 100644
--- a/ctrl/facemgr/src/face_cache.c
+++ b/ctrl/facemgr/src/interfaces/network_framework/network_framework.h
@@ -13,9 +13,10 @@
  * limitations under the License.
  */
 
-#include "face_cache.h"
-
-#include "face.h"
-#include "util/set.h"
+/**
+ * \file network_framework.h
+ * \brief Network framework interface
+ */
 
-TYPEDEF_SET(face_cache, face_t *, face_cmp, face_snprintf);
+typedef struct {
+} network_framework_cfg_t;
diff --git a/ctrl/facemgr/src/interfaces/updown/CMakeLists.txt b/ctrl/facemgr/src/interfaces/updown/CMakeLists.txt
new file mode 100644
index 000000000..e5fd2167e
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/updown/CMakeLists.txt
@@ -0,0 +1,31 @@
+# Copyright (c) 2017-2019 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+list(APPEND HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/updown.h
+)
+
+list(APPEND SOURCE_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/updown.c
+)
+
+list(APPEND INCLUDE_DIRS
+)
+
+list(APPEND LIBRARIES
+)
+
+set(SOURCE_FILES ${SOURCE_FILES} PARENT_SCOPE)
+set(HEADER_FILES ${HEADER_FILES} PARENT_SCOPE)
+set(INCLUDE_DIRS ${INCLUDE_DIRS} PARENT_SCOPE)
+set(LIBRARIES    ${LIBRARIES}    PARENT_SCOPE)
diff --git a/ctrl/facemgr/src/interfaces/updown/updown.c b/ctrl/facemgr/src/interfaces/updown/updown.c
new file mode 100644
index 000000000..f5a813cd4
--- /dev/null
+++ b/ctrl/facemgr/src/interfaces/updown/updown.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * \file updown.c
+ * \brief Implementation of Example updown interface
+ */
+
+#include <assert.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <hicn/facemgr.h>
+
+#include "../../common.h"
+#include "../../facelet.h"
+#include "../../interface.h"
+
+/**
+ * \brief Default unix socket path (the leading \0 means using the abstract
+ * namespace instead of the filesystem).
+ */
+#define UNIX_PATH "\0updownsrv"
+
+typedef struct {
+    int fd; /* Unix client socket */
+} updown_data_t;
+
+int updown_initialize(interface_t * interface, void * cfg)
+{
+    struct sockaddr_un addr;
+    char * socket_path = UNIX_PATH;
+
+    updown_data_t * data = malloc(sizeof(updown_data_t));
+    if (!data)
+        goto ERR_MALLOC;
+    interface->data = data;
+
+    data->fd = socket(AF_UNIX, SOCK_STREAM, 0);
+    if (data->fd == -1) {
+        perror("socket error");
+        return -1;
+    }
+
+    memset(&addr, 0, sizeof(addr));
+    addr.sun_family = AF_UNIX;
+    if (*socket_path == '\0') {
+        *addr.sun_path = '\0';
+        strncpy(addr.sun_path+1, socket_path+1, sizeof(addr.sun_path)-2);
+    } else {
+        strncpy(addr.sun_path, socket_path, sizeof(addr.sun_path)-1);
+    }
+
+    if (connect(data->fd, (struct sockaddr*)&addr, sizeof(addr)) == -1) {
+        perror("connect error");
+        return -1;
+    }
+
+    return data->fd;
+
+ERR_MALLOC:
+    return -1;
+}
+
+int updown_finalize(interface_t * interface)
+{
+    updown_data_t * data = (updown_data_t*)interface->data;
+
+    if (data->fd > 0)
+        close(data->fd);
+
+    return 0;
+}
+
+int updown_callback(interface_t * interface)
+{
+    updown_data_t * data = (updown_data_t*)interface->data;
+    char buf[100];
+    int rc;
+
+    rc = read(data->fd, buf, sizeof(buf));
+    if (rc < 0)
+        return -1;
+
+    /*
+     * If the process is paused (eg. in a debugger, we might have more than one
+     * read.
+     * XXX how big is the buffer
+     * XXX shall we drain the queue if it exceeds buffer size ?
+     */
+    //assert(rc == 1);
+
+    /* Raise facelet update event */
+    facelet_t * facelet = facelet_create();
+    facelet_set_netdevice_type(facelet, NETDEVICE_TYPE_WIFI); //CELLULAR);
+    facelet_set_status(facelet, FACELET_STATUS_CLEAN);
+    switch(buf[0]) {
+        case '\0':
+            facelet_set_admin_state(facelet, FACE_STATE_DOWN);
+            break;
+        case '\1':
+            facelet_set_admin_state(facelet, FACE_STATE_UP);
+            break;
+            break;
+        default:
+            ERROR("Invalid data received from updown server. Ignoring...");
+            facelet_free(facelet);
+            return -1;
+    }
+
+    facelet_set_event(facelet, FACELET_EVENT_UPDATE);
+
+    facelet_raise_event(facelet, interface);
+
+    return 0;
+}
+
+interface_ops_t updown_ops = {
+    .type = "updown",
+    .initialize = updown_initialize,
+    .finalize = updown_finalize,
+    .callback = updown_callback,
+};
diff --git a/ctrl/facemgr/src/main.c b/ctrl/facemgr/src/main.c
index 6a80d806b..2a336db8f 100644
--- a/ctrl/facemgr/src/main.c
+++ b/ctrl/facemgr/src/main.c
@@ -18,8 +18,21 @@
  * \brief Face manager daemon entry point
  */
 
+#ifdef WITH_THREAD
+#ifndef __linux__
+#error "Not implemented"
+#endif /* __linux__ */
+#include <pthread.h>
+#endif /* WITH_THREAD */
+
+#ifndef __APPLE__
+#include <event2/event.h>
+#include <event2/thread.h>
+#endif /* __APPLE__ */
+
 #include <getopt.h>
 #include <limits.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
@@ -27,20 +40,41 @@
 
 #include <libconfig.h>
 
-#include "util/log.h"
-#include "util/policy.h"
-
 #ifdef __APPLE__
 #include <Dispatch/Dispatch.h>
 #else
-// Note: we might want to use libevent on Apple too
 #include <event2/event.h>
 #endif
 
-#include "facemgr.h"
+#include <hicn/facemgr.h>
+#include <hicn/policy.h>
+
+#include <hicn/util/ip_address.h>
+#include <hicn/util/log.h>
+
+#include <hicn/facemgr/cfg.h>
 
 #define FACEMGR_TIMEOUT 3
 
+static struct event_base * loop;
+
+void facemgr_signal_handler(int signal) {
+    fprintf(stderr, "Received ^C... quitting !\n");
+    exit(0);
+#if 0
+    return;
+
+    // FIXME
+
+    /* should be atomic */
+    // FIXME Don't use loop in a static variable as we should not need it if all
+    // events are properly unregistered...
+#endif
+#ifdef __linux__
+    event_base_loopbreak(loop);
+#endif /* __linux__ */
+    loop = NULL;
+}
 
 static struct option long_options[] =
 {
@@ -101,106 +135,305 @@ int parse_cmdline(int argc, char ** argv, facemgr_options_t * opts)
     return 0;
 }
 
-int parse_config_file(const char * cfgpath, facemgr_t * facemgr)
+int
+parse_config_global(facemgr_cfg_t * cfg, config_setting_t * setting)
 {
-    /* Reading configuration file */
-    config_t cfg;
-    config_setting_t *setting;
+    /* - face_type */
+
+    const char *face_type_str;
+    facemgr_face_type_t face_type;
+    if (config_setting_lookup_string(setting, "face_type", &face_type_str)) {
+        if (strcasecmp(face_type_str, "auto") == 0) {
+            face_type = FACEMGR_FACE_TYPE_DEFAULT;
+        } else
+        if (strcasecmp(face_type_str, "native-udp") == 0) {
+            face_type = FACEMGR_FACE_TYPE_NATIVE_UDP;
+        } else
+        if (strcasecmp(face_type_str, "native-tcp") == 0) {
+            face_type = FACEMGR_FACE_TYPE_NATIVE_TCP;
+        } else
+        if (strcasecmp(face_type_str, "overlay-udp") == 0) {
+            face_type = FACEMGR_FACE_TYPE_OVERLAY_UDP;
+        } else
+        if (strcasecmp(face_type_str, "overlay-tcp") == 0) {
+            face_type = FACEMGR_FACE_TYPE_OVERLAY_TCP;
+        } else {
+            ERROR("Invalid face type in section 'global'");
+            return -1;
+        }
 
-    config_init(&cfg);
+        int rc = facemgr_cfg_set_face_type(cfg, &face_type);
+        if (rc < 0)
+            goto ERR;
+    }
 
-    /* Read the file. If there is an error, report it and exit. */
-    if(!config_read_file(&cfg, cfgpath))
-        goto ERR_FILE;
+    /* - disable_discovery */
 
-    setting = config_lookup(&cfg, "log");
-    if (setting) {
-        const char *log_level_str;
-        if (config_setting_lookup_string(setting, "log_level", &log_level_str)) {
-            if (strcmp(log_level_str, "FATAL") == 0) {
-                log_conf.log_level = LOG_FATAL;
-            } else
-            if (strcmp(log_level_str, "ERROR") == 0) {
-                log_conf.log_level = LOG_ERROR;
-            } else
-            if (strcmp(log_level_str, "WARN") == 0) {
-                log_conf.log_level = LOG_WARN;
-            } else
-            if (strcmp(log_level_str, "INFO") == 0) {
-                log_conf.log_level = LOG_INFO;
-            } else
-            if (strcmp(log_level_str, "DEBUG") == 0) {
-                log_conf.log_level = LOG_DEBUG;
-            } else
-            if (strcmp(log_level_str, "TRACE") == 0) {
-                log_conf.log_level = LOG_TRACE;
-            } else {
-                printf("Ignored unknown log level\n");
-            }
-        }
+    int disable_discovery;
+    if (config_setting_lookup_bool(setting, "disable_discovery",
+                &disable_discovery)) {
+        int rc = facemgr_cfg_set_discovery(cfg, !disable_discovery);
+        if (rc < 0)
+            goto ERR;
     }
 
-    setting = config_lookup(&cfg, "faces.overlay.ipv4");
-    if (setting) {
-        const char * ip_address;
-        int local_port, remote_port;
-        if (config_setting_lookup_int(setting, "local_port", &local_port)) {
-            if ((local_port < 0) || (local_port > MAX_PORT))
+    /* - disable_ipv4 */
+
+    int disable_ipv4;
+    if (config_setting_lookup_bool(setting, "disable_ipv4",
+                &disable_ipv4)) {
+        INFO("Ignored setting 'disable_ipv4' in section 'global' (not implemented).");
+#if 0
+        int rc = facemgr_cfg_set_ipv4(cfg, !disable_ipv4);
+        if (rc < 0)
+            goto ERR;
+#endif
+    }
+
+    /* - disable ipv6 */
+
+    int disable_ipv6;
+    if (config_setting_lookup_bool(setting, "disable_ipv6",
+                &disable_ipv6)) {
+        INFO("Ignored setting 'disable_ipv6' in section 'global': (not implemented).");
+#if 0
+        int rc = facemgr_cfg_set_ipv6(cfg, !disable_ipv6);
+        if (rc < 0)
+            goto ERR;
+#endif
+    }
+
+    /* - overlay */
+    config_setting_t *overlay = config_setting_get_member(setting, "overlay");
+    if (overlay) {
+
+        /* ipv4 */
+        config_setting_t *overlay_v4 = config_setting_get_member(overlay, "ipv4");
+        if (overlay_v4) {
+            const char * local_addr_str, * remote_addr_str;
+            ip_address_t local_addr, remote_addr;
+            ip_address_t * local_addr_p = NULL;
+            ip_address_t * remote_addr_p = NULL;
+            int local_port = 0;
+            int remote_port = 0;
+
+            if (config_setting_lookup_string(overlay_v4, "local_addr", &local_addr_str)) {
+                ip_address_pton(local_addr_str, &local_addr);
+                local_addr_p = &local_addr;
+            }
+
+            if (config_setting_lookup_int(overlay_v4, "local_port", &local_port)) {
+                if (!IS_VALID_PORT(local_port))
+                    goto ERR;
+            }
+
+            if (config_setting_lookup_string(overlay_v4, "remote_addr", &remote_addr_str)) {
+                ip_address_pton(remote_addr_str, &remote_addr);
+                remote_addr_p = &remote_addr;
+            }
+
+            if (config_setting_lookup_int(overlay_v4, "remote_port", &remote_port)) {
+                if (!IS_VALID_PORT(remote_port))
+                    goto ERR;
+            }
+            int rc = facemgr_cfg_set_overlay(cfg, AF_INET,
+                    local_addr_p, local_port,
+                    remote_addr_p, remote_port);
+            if (rc < 0)
                 goto ERR;
-            facemgr->overlay_v4_local_port = (uint16_t)local_port;
         }
 
-        if (config_setting_lookup_int(setting, "remote_port", &remote_port)) {
-            if ((remote_port < 0) || (remote_port > MAX_PORT))
+        /* ipv6 */
+        config_setting_t *overlay_v6 = config_setting_get_member(overlay, "ipv6");
+        if (overlay_v6) {
+            const char * local_addr_str, * remote_addr_str;
+            ip_address_t local_addr, remote_addr;
+            ip_address_t * local_addr_p = NULL;
+            ip_address_t * remote_addr_p = NULL;
+            int local_port = 0;
+            int remote_port = 0;
+
+            if (config_setting_lookup_string(overlay_v6, "local_addr", &local_addr_str)) {
+                ip_address_pton(local_addr_str, &local_addr);
+                local_addr_p = &local_addr;
+            }
+
+            if (config_setting_lookup_int(overlay_v6, "local_port", &local_port)) {
+                if (!IS_VALID_PORT(local_port))
+                    goto ERR;
+            }
+
+            if (config_setting_lookup_string(overlay_v6, "remote_addr", &remote_addr_str)) {
+                ip_address_pton(remote_addr_str, &remote_addr);
+                remote_addr_p = &remote_addr;
+            }
+
+            if (config_setting_lookup_int(overlay_v6, "remote_port", &remote_port)) {
+                if (!IS_VALID_PORT(remote_port))
+                    goto ERR;
+            }
+            int rc = facemgr_cfg_set_overlay(cfg, AF_INET6,
+                    local_addr_p, local_port,
+                    remote_addr_p, remote_port);
+            if (rc < 0)
                 goto ERR;
-            facemgr->overlay_v4_remote_port = (uint16_t)remote_port;
         }
 
-        if (config_setting_lookup_string(setting, "remote_addr", &ip_address)) {
-            ip_address_pton(ip_address, &facemgr->overlay_v4_remote_addr);
-            printf("got v4 remote addr\n");
+    } /* overlay */
+
+    return 0;
+
+ERR:
+    return -1;
+}
+
+int
+parse_config_rules(facemgr_cfg_t * cfg, config_setting_t * setting)
+{
+    /* List of match-override tuples */
+    facemgr_cfg_rule_t * rule;
+
+    int count = config_setting_length(setting);
+    for (unsigned i = 0; i < count; ++i) {
+        config_setting_t * rule_setting = config_setting_get_elem(setting, i);
+
+        /* Sanity check */
+
+        config_setting_t * match_setting = config_setting_get_member(rule_setting, "match");
+        if (!match_setting) {
+            ERROR("Missing match section in rule #%d", i);
+            goto ERR_CHECK;
         }
-    }
 
-    setting = config_lookup(&cfg, "faces.overlay.ipv6");
-    if (setting) {
-        const char * ip_address;
-        int local_port, remote_port;
-        if (config_setting_lookup_int(setting, "local_port", &local_port)) {
-            if ((local_port < 0) || (local_port > MAX_PORT))
+        config_setting_t * override_setting = config_setting_get_member(rule_setting, "override");
+        if (!override_setting) {
+            ERROR("Missing override section in rule #%d", i);
+            goto ERR_CHECK;
+        }
+
+        rule = facemgr_cfg_rule_create();
+        if (!rule)
+            goto ERR_RULE;
+
+        /* Parse match */
+
+        const char * interface_name = NULL;
+        config_setting_lookup_string(match_setting, "interface_name", &interface_name);
+
+        const char * interface_type_str;
+        netdevice_type_t interface_type = NETDEVICE_TYPE_UNDEFINED;
+        if (config_setting_lookup_string(match_setting, "interface_type", &interface_type_str)) {
+            if (strcasecmp(interface_type_str, "wired") == 0) {
+                interface_type = NETDEVICE_TYPE_WIRED;
+            } else
+            if (strcasecmp(interface_type_str, "wifi") == 0) {
+                interface_type = NETDEVICE_TYPE_WIFI;
+            } else
+            if (strcasecmp(interface_type_str, "cellular") == 0) {
+                interface_type = NETDEVICE_TYPE_CELLULAR;
+            } else {
+                ERROR("Unknown interface type in rule #%d", i);
                 goto ERR;
-            facemgr->overlay_v6_local_port = (uint16_t)local_port;
+            }
         }
 
-        if (config_setting_lookup_int(setting, "remote_port", &remote_port)) {
-            if ((remote_port < 0) || (remote_port > MAX_PORT))
+        if ((!interface_name) && (interface_type == NETDEVICE_TYPE_UNDEFINED)) {
+            ERROR("Empty match section in rule #%d", i);
+            goto ERR;
+        }
+
+        /* Associate match to rule */
+
+        int rc = facemgr_cfg_rule_set_match(rule, interface_name, interface_type);
+        if (rc < 0)
+            goto ERR;
+
+        /* Parse override */
+
+        /* - face_type */
+
+        const char *face_type_str;
+        facemgr_face_type_t face_type;
+        if (config_setting_lookup_string(override_setting, "face_type", &face_type_str)) {
+            if (strcasecmp(face_type_str, "auto")) {
+                /* We currently hardcode different behaviours based on the OS */
+#ifdef __ANDROID__
+                face_type = FACEMGR_FACE_TYPE_OVERLAY_UDP;
+#else
+                face_type = FACEMGR_FACE_TYPE_NATIVE_TCP;
+#endif
+            } else
+            if (strcasecmp(face_type_str, "native-udp") == 0) {
+                face_type = FACEMGR_FACE_TYPE_NATIVE_UDP;
+            } else
+            if (strcasecmp(face_type_str, "native-tcp") == 0) {
+                face_type = FACEMGR_FACE_TYPE_NATIVE_TCP;
+            } else
+            if (strcasecmp(face_type_str, "overlay-udp") == 0) {
+                face_type = FACEMGR_FACE_TYPE_OVERLAY_UDP;
+            } else
+            if (strcasecmp(face_type_str, "overlay-tcp") == 0) {
+                face_type = FACEMGR_FACE_TYPE_OVERLAY_TCP;
+            } else {
+                ERROR("Invalid face type in section 'global'");
+                return -1;
+            }
+
+            int rc = facemgr_cfg_rule_set_face_type(rule, &face_type);
+            if (rc < 0)
                 goto ERR;
-            facemgr->overlay_v6_remote_port = (uint16_t)remote_port;
         }
 
-        if (config_setting_lookup_string(setting, "remote_addr", &ip_address))
-            ip_address_pton(ip_address, &facemgr->overlay_v6_remote_addr);
-    }
+        /* - disable_discovery */
 
-    setting = config_lookup(&cfg, "faces.rules");
-    if (setting) {
-        int count = config_setting_length(setting);
-        for(unsigned i = 0; i < count; ++i) {
-            const char *interface_name;
-            policy_tags_t tags = POLICY_TAGS_EMPTY;
+        int disable_discovery;
+        if (config_setting_lookup_bool(override_setting, "disable_discovery",
+                    &disable_discovery)) {
+            int rc = facemgr_cfg_rule_set_discovery(rule, !disable_discovery);
+            if (rc < 0)
+                goto ERR;
+        }
 
-            config_setting_t *rule = config_setting_get_elem(setting, i);
+        /* - disable_ipv4 */
 
-            /* Interface name */
-            if(!(config_setting_lookup_string(rule, "name", &interface_name)))
-                continue;
+        int disable_ipv4;
+        if (config_setting_lookup_bool(override_setting, "disable_ipv4",
+                    &disable_ipv4)) {
+            INFO("Ignored setting 'disable_ipv4' in rule #%d (not implemented).", i);
+#if 0
+            int rc = facemgr_cfg_rule_set_ipv4(rule, !disable_ipv4);
+            if (rc < 0)
+                goto ERR;
+#endif
+        }
 
-            /* Associated tags */
-            config_setting_t *tag_settings = config_setting_get_member(rule, "tags");
-            if (!tag_settings)
+        /* - disable ipv6 */
+
+        int disable_ipv6;
+        if (config_setting_lookup_bool(override_setting, "disable_ipv6",
+                    &disable_ipv6)) {
+            INFO("Ignored setting 'disable_ipv6' in rule #%d (not implemented).", i);
+#if 0
+            int rc = facemgr_cfg_rule_set_ipv6(rule, !disable_ipv6);
+            if (rc < 0)
                 goto ERR;
+#endif
+        }
 
+        /* - ignore */
+        int ignore;
+        if (config_setting_lookup_bool(override_setting, "ignore", &ignore)) {
+            int rc = facemgr_cfg_rule_set_ignore(rule, !!ignore);
+            if (rc < 0)
+                goto ERR;
+        }
 
+        /* - tags */
+        config_setting_t *tag_settings = config_setting_get_member(override_setting, "tags");
+        if (tag_settings) {
+            INFO("Ignored setting 'tags' in rule #%d (not implemented).", i);
+#if 0
+            policy_tags_t tags = POLICY_TAGS_EMPTY;
             for (unsigned j = 0; j < config_setting_length(tag_settings); j++) {
                 const char * tag_str = config_setting_get_string_elem(tag_settings, j);
                 policy_tag_t tag = policy_tag_from_str(tag_str);
@@ -209,41 +442,267 @@ int parse_config_file(const char * cfgpath, facemgr_t * facemgr)
                 policy_tags_add(&tags, tag);
             }
 
-            /* debug */
+            int rc = facemgr_cfg_rule_set_tags(rule, tags);
+            if (rc < 0)
+                goto ERR;
+
+#if 0
             char tags_str[MAXSZ_POLICY_TAGS];
             policy_tags_snprintf(tags_str, MAXSZ_POLICY_TAGS, tags);
-            printf("Rule #%d interface_name=%s, tags=%s\n", i, interface_name, tags_str);
-            face_rules_add(&facemgr->rules, strdup(interface_name), tags);
+            DEBUG("Added tags tags=%s", tags_str);
+#endif
+#endif
         }
+
+        /* - overlay */
+        config_setting_t *overlay = config_setting_get_member(override_setting, "overlay");
+        if (overlay) {
+
+            /* ipv4 */
+            config_setting_t *overlay_v4 = config_setting_get_member(overlay, "ipv4");
+            if (overlay_v4) {
+                const char * local_addr_str, * remote_addr_str;
+                ip_address_t local_addr, remote_addr;
+                ip_address_t * local_addr_p = NULL;
+                ip_address_t * remote_addr_p = NULL;
+                int local_port = 0;
+                int remote_port = 0;
+
+                if (config_setting_lookup_string(overlay_v4, "local_addr", &local_addr_str)) {
+                    ip_address_pton(local_addr_str, &local_addr);
+                    local_addr_p = &local_addr;
+                }
+
+                if (config_setting_lookup_int(overlay_v4, "local_port", &local_port)) {
+                    if (!IS_VALID_PORT(local_port))
+                        goto ERR;
+                }
+
+                if (config_setting_lookup_string(overlay_v4, "remote_addr", &remote_addr_str)) {
+                    ip_address_pton(remote_addr_str, &remote_addr);
+                    remote_addr_p = &remote_addr;
+                }
+
+                if (config_setting_lookup_int(overlay_v4, "remote_port", &remote_port)) {
+                    if (!IS_VALID_PORT(remote_port))
+                        goto ERR;
+                }
+                int rc = facemgr_cfg_rule_set_overlay(rule, AF_INET,
+                        local_addr_p, local_port,
+                        remote_addr_p, remote_port);
+                if (rc < 0)
+                    goto ERR;
+            }
+
+            /* ipv6 */
+            config_setting_t *overlay_v6 = config_setting_get_member(overlay, "ipv6");
+            if (overlay_v6) {
+                const char * local_addr_str, * remote_addr_str;
+                ip_address_t local_addr, remote_addr;
+                ip_address_t * local_addr_p = NULL;
+                ip_address_t * remote_addr_p = NULL;
+                int local_port = 0;
+                int remote_port = 0;
+
+                if (config_setting_lookup_string(overlay_v6, "local_addr", &local_addr_str)) {
+                    ip_address_pton(local_addr_str, &local_addr);
+                    local_addr_p = &local_addr;
+                }
+
+                if (config_setting_lookup_int(overlay_v6, "local_port", &local_port)) {
+                    if (!IS_VALID_PORT(local_port))
+                        goto ERR;
+                }
+
+                if (config_setting_lookup_string(overlay_v6, "remote_addr", &remote_addr_str)) {
+                    ip_address_pton(remote_addr_str, &remote_addr);
+                    remote_addr_p = &remote_addr;
+                }
+
+                if (config_setting_lookup_int(overlay_v6, "remote_port", &remote_port)) {
+                    if (!IS_VALID_PORT(remote_port))
+                        goto ERR;
+                }
+                int rc = facemgr_cfg_rule_set_overlay(rule, AF_INET6,
+                        local_addr_p, local_port,
+                        remote_addr_p, remote_port);
+                if (rc < 0)
+                    goto ERR;
+            }
+
+        } /* overlay */
+
+        /* Add newly created rule */
+
+        rc = facemgr_cfg_add_rule(cfg, rule);
+        if (rc < 0)
+            goto ERR;
     }
+    return 0;
+
+ERR:
+    facemgr_cfg_rule_free(rule);
+ERR_RULE:
+ERR_CHECK:
+    return -1;
+}
 
-    config_destroy(&cfg);
+/* Currently not using facemgr_cfg_t */
+int
+parse_config_log(facemgr_cfg_t * cfg, config_setting_t * setting)
+{
+    const char *log_level_str;
+    if (config_setting_lookup_string(setting, "log_level", &log_level_str)) {
+        if (strcasecmp(log_level_str, "FATAL") == 0) {
+            log_conf.log_level = LOG_FATAL;
+        } else
+        if (strcasecmp(log_level_str, "ERROR") == 0) {
+            log_conf.log_level = LOG_ERROR;
+        } else
+        if (strcasecmp(log_level_str, "WARN") == 0) {
+            log_conf.log_level = LOG_WARN;
+        } else
+        if (strcasecmp(log_level_str, "INFO") == 0) {
+            log_conf.log_level = LOG_INFO;
+        } else
+        if (strcasecmp(log_level_str, "DEBUG") == 0) {
+            log_conf.log_level = LOG_DEBUG;
+        } else
+        if (strcasecmp(log_level_str, "TRACE") == 0) {
+            log_conf.log_level = LOG_TRACE;
+        } else {
+            ERROR("Invalid log level in section 'log'");
+            return -1;
+        }
+    }
+    return 0;
+}
+
+int
+parse_config_file(const char * cfgpath, facemgr_cfg_t * cfg)
+{
+    /* Reading configuration file */
+    config_t cfgfile;
+    config_setting_t *setting;
+
+    config_init(&cfgfile);
+
+    /* Read the file. If there is an error, report it and exit. */
+    if(!config_read_file(&cfgfile, cfgpath))
+        goto ERR_FILE;
+
+    setting = config_lookup(&cfgfile, "global");
+    if (setting) {
+        int rc = parse_config_global(cfg, setting);
+        if (rc < 0)
+            goto ERR_PARSE;
+    }
+
+    setting = config_lookup(&cfgfile, "rules");
+    if (setting) {
+        int rc = parse_config_rules(cfg, setting);
+        if (rc < 0)
+            goto ERR_PARSE;
+    }
+
+    setting = config_lookup(&cfgfile, "log");
+    if (setting) {
+        int rc = parse_config_log(cfg, setting);
+        if (rc < 0)
+            goto ERR_PARSE;
+    }
+
+    config_destroy(&cfgfile);
     return 0;
 
 ERR_FILE:
-    printf("Could not read configuration file %s\n", cfgpath);
-    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
-            config_error_line(&cfg), config_error_text(&cfg));
-    config_destroy(&cfg);
+    ERROR("Could not read configuration file %s", cfgpath);
+    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfgfile),
+            config_error_line(&cfgfile), config_error_text(&cfgfile));
+    config_destroy(&cfgfile);
     exit(EXIT_FAILURE);
     return -1;
-ERR:
-    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
-            config_error_line(&cfg), config_error_text(&cfg));
-    config_destroy(&cfg);
+ERR_PARSE:
+    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfgfile),
+            config_error_line(&cfgfile), config_error_text(&cfgfile));
+    config_destroy(&cfgfile);
     return -1;
 }
 
-#ifndef APPLE
-void dummy_handler(int fd, short event, void *arg) { }
-#endif /* APPLE */
+#ifdef __linux__
 
+typedef struct {
+    void (*cb)(void *, ...);
+    void * args;
+} cb_wrapper_args_t;
+
+void cb_wrapper(evutil_socket_t fd, short what, void * arg) {
+    cb_wrapper_args_t * cb_wrapper_args = arg;
+    cb_wrapper_args->cb(cb_wrapper_args->args);
+}
 
-int main(int argc, char **argv)
+struct event *
+loop_register_fd(struct event_base * loop, int fd, void * cb, void * cb_args)
 {
-    facemgr_t * facemgr = facemgr_create();
-    if (!facemgr)
-        goto ERR_FACEMGR;
+    // TODO: not freed
+    cb_wrapper_args_t * cb_wrapper_args = malloc(sizeof(cb_wrapper_args_t));
+    *cb_wrapper_args = (cb_wrapper_args_t) {
+        .cb = cb,
+        .args = cb_args,
+    };
+
+    evutil_make_socket_nonblocking(fd);
+    struct event * event = event_new(loop, fd, EV_READ | EV_PERSIST, cb_wrapper, cb_wrapper_args);
+    if (!event)
+        goto ERR_EVENT_NEW;
+
+    if (event_add(event, NULL) < 0)
+        goto ERR_EVENT_ADD;
+
+    return event;
+
+ERR_EVENT_ADD:
+    event_free(event);
+ERR_EVENT_NEW:
+    return NULL;
+}
+
+int
+loop_unregister_event(struct event_base * loop, struct event * event)
+{
+    if (!event)
+        return 0;
+
+    event_del(event);
+    event_free(event);
+
+    return 0;
+}
+
+
+void * start_dispatch(void * loop_ptr)
+{
+    struct event_base * loop = (struct event_base *) loop_ptr;
+    event_base_dispatch(loop);
+
+    return NULL;
+}
+
+#endif /* __linux__ */
+
+int main(int argc, char ** argv)
+{
+    facemgr_cfg_t * cfg = NULL;
+    facemgr_t * facemgr;
+#ifdef WITH_THREAD
+    pthread_t facemgr_thread;
+#endif /* WITH_THREAD */
+
+    struct sigaction sigIntHandler;
+    sigIntHandler.sa_handler = facemgr_signal_handler;
+    sigemptyset(&sigIntHandler.sa_mask);
+    sigIntHandler.sa_flags = 0;
+    sigaction(SIGINT, &sigIntHandler, NULL);
 
     char cfgfile[PATH_MAX];
 
@@ -252,7 +711,7 @@ int main(int argc, char **argv)
     /* Commandline */
     facemgr_options_t cmdline_opts = {0};
     if (parse_cmdline(argc, argv, &cmdline_opts) < 0) {
-        ERROR("Error parsing commandline\n");
+        ERROR("Error parsing commandline");
         goto ERR_CMDLINE;
     }
 
@@ -260,7 +719,7 @@ int main(int argc, char **argv)
     //facemgr_options_t cfgfile_opts;
 
     if (cmdline_opts.cfgfile) {
-        if (strcmp(cmdline_opts.cfgfile, "none") == 0)
+        if (strcasecmp(cmdline_opts.cfgfile, "none") == 0)
             goto NO_CFGFILE;
 
         if (!realpath(cmdline_opts.cfgfile, (char*)&cfgfile))
@@ -274,76 +733,118 @@ int main(int argc, char **argv)
     if (probe_cfgfile(cfgfile) < 0)
         goto NO_CFGFILE;
 
-    printf("Using configuration file %s\n", cfgfile);
-
 PARSE_CFGFILE:
 
-    if (parse_config_file(cfgfile, facemgr) < 0) {
-        ERROR("Error parsing configuration file %s\n", cfgfile);
+    DEBUG("Using configuration file %s", cfgfile);
+    cfg = facemgr_cfg_create();
+    if (!cfg)
+        goto ERR_FACEMGR_CFG;
+
+    if (parse_config_file(cfgfile, cfg) < 0) {
+        ERROR("Error parsing configuration file %s", cfgfile);
         goto ERR_PARSE;
     }
 
+    facemgr = facemgr_create_with_config(cfg);
+    if (!facemgr)
+        goto ERR_FACEMGR_CONFIG;
+
+    goto MAIN_LOOP;
+
 NO_CFGFILE:
 
+    facemgr = facemgr_create();
+    if (!facemgr)
+        goto ERR_FACEMGR;
+
+MAIN_LOOP:
+
+    /* Main loop */
+
+
+#ifdef WITH_THREAD
+    evthread_use_pthreads();
+#endif /* WITH_THREAD */
+
 #ifdef __linux__
-    facemgr->loop = event_base_new();
-    if (!facemgr->loop)
-        fatal("Could not create an event base");
-
-    /* Main loop
-     *
-     * To avoid the loop to exit when empty, we might either rely on an option
-     * introduced from versions 2.1.x:
-     *   event_base_loop(loop->base, EVLOOP_NO_EXIT_ON_EMPTY);
-     * or use this workaround:
-     *   http://archives.seul.org/libevent/users/Sep-2012/msg00056.html
-     *
-     * TODO:
-     *  - HUP should interrupt the main loop
-     */
-    {
-        struct event *ev;
-        struct timeval tv;
-        tv.tv_sec = FACEMGR_TIMEOUT;
-        tv.tv_usec = 0;
-
-        ev = event_new(facemgr->loop, fileno(stdin), EV_TIMEOUT | EV_PERSIST, dummy_handler, NULL);
-        event_add(ev, &tv);
-    }
+    /* Event loop */
+    loop = event_base_new();
+    if (!loop)
+        goto ERR_EVENT;
+
+    facemgr_set_event_loop_handler(facemgr, loop, loop_register_fd, loop_unregister_event);
 #endif /* __linux__ */
 
-    DEBUG("Bootstrap...\n");
+#ifdef __ANDROID__
+    facemgr_set_jvm(facemgr, NULL, NULL); // FIXME
+#endif /* __ ANDROID__ */
+
+    DEBUG("Bootstrap...");
+
     if (facemgr_bootstrap(facemgr) < 0 )
         goto ERR_BOOTSTRAP;
 
 #ifdef __linux__
     event_set_log_callback(NULL);
-    event_base_dispatch(facemgr->loop);
 
-    event_base_free(facemgr->loop);
+#ifdef WITH_THREAD
+    if (pthread_create(&facemgr_thread, NULL, start_dispatch, loop)) {
+        fprintf(stderr, "Error creating thread\n");
+        return EXIT_FAILURE;
+    }
+#else
+    event_base_dispatch(loop);
+#endif /* WITH_THREAD */
+
 #endif /* __linux__ */
 
 #ifdef __APPLE__
     /* Main loop */
-    facemgr->loop = NULL;
     dispatch_main();
 #endif /* __APPLE__ */
 
-    /* Clean up */
-    //interface_delete_all();
+#ifdef __linux__
+#ifdef WITH_THREAD
+    for(;;) {
+        facemgr_list_faces(facemgr, NULL, NULL);
+        sleep(5);
+    }
+#endif /* WITH_THREAD */
+#endif /* __linux__ */
+
+    facemgr_stop(facemgr);
 
+#ifdef __linux__
+#ifdef WITH_THREAD
+    DEBUG("Waiting for loop to terminate...");
+    if(pthread_join(facemgr_thread, NULL)) {
+        fprintf(stderr, "Error joining thread\n");
+        return EXIT_FAILURE;
+    }
+    DEBUG("Loop terminated !");
+#endif /* WITH_THREAD */
+#endif /* __linux__ */
 
     facemgr_free(facemgr);
 
     return EXIT_SUCCESS;
 
 ERR_BOOTSTRAP:
+#ifdef __linux__
+ERR_EVENT:
+#endif /* __linux__ */
+
+    facemgr_free(facemgr);
+ERR_FACEMGR_CONFIG:
+    if (cfg)
+        facemgr_cfg_free(cfg);
+ERR_FACEMGR:
+ERR_FACEMGR_CFG:
+
 ERR_PARSE:
 ERR_PATH:
 ERR_CMDLINE:
-    facemgr_free(facemgr);
-ERR_FACEMGR:
     return EXIT_FAILURE;
 
-}
 
+}
diff --git a/ctrl/facemgr/src/netdevice.h b/ctrl/facemgr/src/netdevice.h
deleted file mode 100644
index b64ad0f9a..000000000
--- a/ctrl/facemgr/src/netdevice.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file netdevice.h
- * \brief Netdevice abstraction
- */
-#ifndef FACEMGR_NETDEVICE_H
-#define FACEMGR_NETDEVICE_H
-
-#include <net/if.h> // IFNAMSIZ
-
-#include "common.h"
-
-#define foreach_netdevice_type  \
-    _(UNDEFINED)                \
-    _(WIRED)                    \
-    _(WIFI)                     \
-    _(CELLULAR)                 \
-    _(VPN)                      \
-    _(N)
-
-#define MAXSZ_NETDEVICE_TYPE 9
-#define MAXSZ_NETDEVICE_TYPE_ MAXSZ_NETDEVICE_TYPE
-
-typedef enum {
-#define _(x) x,
-foreach_netdevice_type
-#undef _
-} netdevice_type_t;
-
-extern const char * netdevice_type_str[];
-
-
-typedef struct {
-    u32 index;
-    char name[IFNAMSIZ];
-} netdevice_t;
-
-#endif /* FACEMGR_NETDEVICE_H */
diff --git a/ctrl/facemgr/src/util/ip_address.h b/ctrl/facemgr/src/util/ip_address.h
deleted file mode 100644
index 243ce048b..000000000
--- a/ctrl/facemgr/src/util/ip_address.h
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file ip_address.h
- * \brief IP address type support
- */
-#ifndef UTIL_IP_ADDRESS_H
-#define UTIL_IP_ADDRESS_H
-
-#include <arpa/inet.h>  // inet_ntop
-#ifdef __APPLE__
-#include <libkern/OSByteOrder.h>
-#define __bswap_constant_32(x) OSSwapInt32(x)
-#include <machine/endian.h>
-#else
-#include <endian.h>
-#ifdef __ANDROID__
-#include <byteswap.h>
-#endif
-#endif
-#include <errno.h>
-#include <netdb.h> // struct addrinfo
-#include <netinet/in.h> // INET*_ADDRSTRLEN, IN*ADDR_LOOPBACK
-#include <stdlib.h>
-#include <stdio.h> // snprintf
-#include <string.h> // memset
-
-#include "types.h"
-
-#define bytes_to_bits(x) (x * 8)
-#define IPV6_ADDR_LEN 16	/* bytes */
-#define IPV4_ADDR_LEN 4		/* bytes */
-#define IPV6_ADDR_LEN_BITS bytes_to_bits(IPV6_ADDR_LEN)
-#define IPV4_ADDR_LEN_BITS bytes_to_bits(IPV4_ADDR_LEN)
-
-#define IP_MAX_ADDR_LEN IPV6_ADDR_LEN
-
-#define DUMMY_PORT 1234
-
-typedef union {
-    union {
-        struct in_addr as_inaddr;
-        u8 as_u8[4];
-        u16 as_u16[2];
-        u32 as_u32;
-    } v4;
-    union {
-        struct in6_addr as_in6addr;
-        u8 as_u8[16];
-        u16 as_u16[8];
-        u32 as_u32[4];
-        u64 as_u64[2];
-    } v6;
-    u8 buffer[IP_MAX_ADDR_LEN];
-    u8 as_u8[IP_MAX_ADDR_LEN];
-    u16 as_u16[IP_MAX_ADDR_LEN >> 1];
-    u32 as_u32[IP_MAX_ADDR_LEN >> 2];
-    u64 as_u64[IP_MAX_ADDR_LEN >> 3];
-} ip_address_t;
-
-#define MAXSZ_IP4_ADDRESS_ INET_ADDRSTRLEN - 1
-#define MAXSZ_IP6_ADDRESS_ INET6_ADDRSTRLEN - 1
-#define MAXSZ_IP_ADDRESS_ MAXSZ_IP6_ADDRESS_
-#define MAXSZ_IP4_ADDRESS MAXSZ_IP4_ADDRESS_ + 1
-#define MAXSZ_IP6_ADDRESS MAXSZ_IP6_ADDRESS_ + 1
-#define MAXSZ_IP_ADDRESS MAXSZ_IP_ADDRESS_ + 1
-
-typedef struct {
-  int family;
-  ip_address_t address;
-  u8 len;
-} ip_prefix_t;
-
-#define MAXSZ_PREFIX_ MAXSZ_IP_ADDRESS_ + 1 + 3
-#define MAXSZ_PREFIX MAXSZ_PREFIX_ + 1
-
-/* No htonl() with const */
-static const ip_address_t IPV4_LOOPBACK = {
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-#ifdef __ANDROID__
-    .v4.as_inaddr.s_addr = bswap_32(INADDR_LOOPBACK),
-#else
-    .v4.as_inaddr.s_addr = __bswap_constant_32(INADDR_LOOPBACK),
-#endif
-#else
-    .v4.as_inaddr.s_addr = INADDR_LOOPBACK,
-#endif
-};
-
-static const ip_address_t IPV6_LOOPBACK = {
-    .v6.as_in6addr = IN6ADDR_LOOPBACK_INIT,
-};
-
-static const ip_address_t IPV4_ANY = {
-    .v4.as_inaddr.s_addr = INADDR_ANY,
-};
-
-static const ip_address_t IPV6_ANY = {
-    .v6.as_in6addr = IN6ADDR_ANY_INIT,
-};
-
-#define IP_ANY(family) (family == AF_INET) ? IPV4_ANY : IPV6_ANY
-
-static const ip_address_t IP_ADDRESS_EMPTY = {
-    .as_u64 = { 0 },
-};
-
-
-#define MAX_PORT 1 << (8 * sizeof(u16))
-#define IS_VALID_PORT(x) ((x > 0) && (x < MAX_PORT))
-
-#define MAXSZ_PORT_ 5
-#define MAXSZ_PORT MAXSZ_PORT_ + 1
-
-#define IS_VALID_FAMILY(x) ((x == AF_INET) || (x == AF_INET6))
-
-static inline
-int
-ip_address_get_family (const char * ip_address)
-{
-  struct addrinfo hint, *res = NULL;
-  int rc;
-
-  memset (&hint, '\0', sizeof hint);
-
-  hint.ai_family = PF_UNSPEC;
-  hint.ai_flags = AI_NUMERICHOST;
-
-  rc = getaddrinfo (ip_address, NULL, &hint, &res);
-  if (rc)
-    {
-      return -1;
-    }
-  rc = res->ai_family;
-  freeaddrinfo (res);
-  return rc;
-}
-
-static inline
-int
-ip_address_len (const ip_address_t * ip_address, int family)
-{
-  return (family == AF_INET6) ? IPV6_ADDR_LEN :
-    (family == AF_INET) ? IPV4_ADDR_LEN : 0;
-}
-
-static inline
-int
-ip_address_ntop (const ip_address_t * ip_address, char *dst, const size_t len,
-		int family)
-{
-  const char * s = inet_ntop (family, ip_address->buffer, dst, len);
-  return (s ? 1 : -1);
-}
-
-/*
- * Parse ip addresses in presentation format
- */
-static inline
-int
-ip_address_pton (const char *ip_address_str, ip_address_t * ip_address)
-{
-  int pton_fd;
-  char *addr = strdup (ip_address_str);
-  int family;
-
-
-  family = ip_address_get_family (addr);
-
-  switch (family)
-    {
-    case AF_INET6:
-      pton_fd = inet_pton (AF_INET6, addr, &ip_address->buffer);
-      break;
-    case AF_INET:
-      pton_fd = inet_pton (AF_INET, addr, &ip_address->buffer);
-      break;
-    default:
-      goto ERR;
-    }
-
-  //   0 = not in presentation format
-  // < 0 = other error (use perror)
-  if (pton_fd <= 0)
-    {
-      goto ERR;
-    }
-
-  return 1;
-ERR:
-  free (addr);
-  return -1;
-}
-
-
-
-static inline
-int
-ip_address_snprintf(char * s, size_t size, const ip_address_t * ip_address, int family)
-{
-    size_t len = family == AF_INET ? INET_ADDRSTRLEN : INET6_ADDRSTRLEN;
-    const char * rc = inet_ntop (family, ip_address->buffer, s, len);
-    return rc ? strlen(rc) : -1;
-}
-
-
-static inline
-int
-ip_address_to_sockaddr(const ip_address_t * ip_address,
-		struct sockaddr *sockaddr_address, int family)
-{
-  struct sockaddr_in6 *tmp6 = (struct sockaddr_in6 *) sockaddr_address;
-  struct sockaddr_in *tmp4 = (struct sockaddr_in *) sockaddr_address;
-
-  switch (family)
-    {
-    case AF_INET6:
-      tmp6->sin6_family = AF_INET6;
-      tmp6->sin6_port = DUMMY_PORT;
-      tmp6->sin6_scope_id = 0;
-      memcpy (&tmp6->sin6_addr, ip_address->buffer, IPV6_ADDR_LEN);
-      break;
-    case AF_INET:
-      tmp4->sin_family = AF_INET;
-      tmp4->sin_port = DUMMY_PORT;
-      memcpy (&tmp4->sin_addr, ip_address->buffer, IPV4_ADDR_LEN);
-      break;
-    default:
-      return -1;
-    }
-
-  return 1;
-}
-
-static inline
-int
-ip_address_cmp(const ip_address_t * ip1, const ip_address_t * ip2, int family)
-{
-    return memcmp(ip1, ip2, ip_address_len(ip1, family));
-}
-
-static inline
-int
-ip_address_empty(const ip_address_t * ip)
-{
-    return (memcmp(ip, &IP_ADDRESS_EMPTY, sizeof(IP_ADDRESS_EMPTY)) == 0);
-}
-
-/* Parse IP Prefixes in presentation format (in bits, separated by a slash) */
-static inline
-int
-ip_prefix_pton (const char *ip_address_str, ip_prefix_t * ip_prefix)
-{
-  int pton_fd;
-  char *p;
-  char *eptr;
-  char *addr = strdup (ip_address_str);
-
-  p = strchr (addr, '/');
-  if (!p)
-    {
-      ip_prefix->len = 0;		// until we get the ip address family
-    }
-  else
-    {
-      ip_prefix->len = strtoul (p + 1, &eptr, 10);
-      *p = 0;
-    }
-
-  ip_prefix->family = ip_address_get_family (addr);
-
-  switch (ip_prefix->family)
-    {
-    case AF_INET6:
-      if (ip_prefix->len > IPV6_ADDR_LEN_BITS)
-	goto ERR;
-      pton_fd = inet_pton (AF_INET6, addr, &ip_prefix->address.buffer);
-      break;
-    case AF_INET:
-      if (ip_prefix->len > IPV4_ADDR_LEN_BITS)
-	goto ERR;
-      pton_fd = inet_pton (AF_INET, addr, &ip_prefix->address.buffer);
-      break;
-    default:
-      goto ERR;
-    }
-
-  //   0 = not in presentation format
-  // < 0 = other error (use perror)
-  if (pton_fd <= 0)
-    {
-      goto ERR;
-    }
-
-  return 1;
-ERR:
-  free (addr);
-  return -1;
-}
-
-static inline
-int
-ip_prefix_ntop (const ip_prefix_t * ip_prefix, char *dst, size_t size)
-{
-  char ip_s[MAXSZ_IP_ADDRESS];
-  const char * s = inet_ntop (ip_prefix->family, ip_prefix->address.buffer, ip_s, MAXSZ_IP_ADDRESS);
-  if (!s)
-      return -1;
-  size_t n = snprintf(dst, size, "%s/%d", ip_s, ip_prefix->len);
-
-  return (n > 0 ? 1 : -1);
-}
-
-
-#endif /* UTIL_IP_ADDRESS_H */
diff --git a/ctrl/facemgr/src/util/log.c b/ctrl/facemgr/src/util/log.c
index 54943cf45..c1fc999ad 100644
--- a/ctrl/facemgr/src/util/log.c
+++ b/ctrl/facemgr/src/util/log.c
@@ -13,12 +13,16 @@
  * limitations under the License.
  */
 
-#include "log.h"
+#include <hicn/util/log.h>
 
 #include <stdarg.h>
 #include <stdlib.h>
 #include <stdio.h>
 
+#ifdef __ANDROID__
+#include <android/log.h>
+#endif
+
 log_conf_t log_conf = DEFAULT_LOG_CONF;
 
 #define FMT_DATETIME "%02d-%02d-%04d %02d:%02d:%02d"
@@ -43,48 +47,96 @@ static char *timestamp(void)
 }
 
 void _log_va(int level, const char *fmt, va_list ap)
-{
-	char *prefix;
-  FILE *f = log_conf.log_file ? log_conf.log_file : stdout;
+{  
 
 #if 0
 	if (!conf.log_system)
 		return;
 #endif
 
+	char *prefix;
+
+#ifdef __ANDROID__
+	int prio = -1;
 	if (level > log_conf.log_level)
 		return;
 
 	switch (level) {
 		case LOG_FATAL:
+			prio = ANDROID_LOG_FATAL;
 			prefix = "FATAL: ";
 			break;
 		case LOG_ERROR:
+			prio = ANDROID_LOG_ERROR;
 			prefix = "ERROR: ";
 			break;
 		case LOG_WARN:
+			prio = ANDROID_LOG_WARN;
 			prefix = "WARNING: ";
 			break;
 		case LOG_INFO:
+			prio = ANDROID_LOG_INFO;
 			prefix = "";
 			break;
 		case LOG_DEBUG:
+			prio  = ANDROID_LOG_DEBUG;
 			prefix = "DEBUG: ";
 			break;
 		case LOG_TRACE:
+			prio = ANDROID_LOG_DEBUG;
 			prefix = "TRACE: ";
 			break;
 		default:
+			prio = ANDROID_LOG_INFO;
 			prefix = "";
 			break;
 	}
 
+	if (log_conf.log_file) {
+		FILE *f = log_conf.log_file;
+		fprintf(f, "%s %s", timestamp(), prefix);
+		vfprintf(f, fmt, ap);
+		fprintf(f, "\n");
+	} else {
+		__android_log_vprint(ANDROID_LOG_INFO, "HICN FACEMGR", fmt, ap);
+	}
+
+#else
+
+	if (level > log_conf.log_level)
+		return;
+
+	switch (level) {
+		case LOG_FATAL:
+			prefix = "FATAL: ";
+			break;
+		case LOG_ERROR:
+			prefix = "ERROR: ";
+			break;
+		case LOG_WARN:
+			prefix = "WARNING: ";
+			break;
+		case LOG_INFO:
+			prefix = "";
+			break;
+		case LOG_DEBUG:
+			prefix = "DEBUG: ";
+			break;
+		case LOG_TRACE:
+			prefix = "TRACE: ";
+			break;
+		default:
+			prefix = "";
+			break;
+	}
+	FILE *f = log_conf.log_file ? log_conf.log_file : stdout;
 	fprintf(f, "%s %s", timestamp(), prefix);
 	vfprintf(f, fmt, ap);
 	fprintf(f, "\n");
 #ifdef DEBUG
 	fflush(f);
 #endif
+#endif
 }
 
 void _log(int level, const char *fmt, ...)
diff --git a/ctrl/facemgr/src/util/map.h b/ctrl/facemgr/src/util/map.h
index 2694de2a7..b6773f209 100644
--- a/ctrl/facemgr/src/util/map.h
+++ b/ctrl/facemgr/src/util/map.h
@@ -31,6 +31,10 @@ typedef struct {
     VAL_T value;                                                                \
 } NAME ## _pair_t;                                                              \
                                                                                 \
+NAME ## _pair_t * NAME ## _pair_create(KEY_T key, VAL_T value);                 \
+                                                                                \
+void NAME ## _pair_free(NAME ## _pair_t * pair);                                \
+                                                                                \
 int NAME ## _pair_cmp(const NAME ## _pair_t * p1, const NAME ## _pair_t * p2);  \
                                                                                 \
 TYPEDEF_SET_H(NAME ## _pair_set, NAME ## _pair_t *)                             \
@@ -47,7 +51,7 @@ NAME ## _t * NAME ## _create();
                                                                                 \
 void NAME ## _free(NAME ## _t * map);                                           \
                                                                                 \
-int NAME ## _add(NAME ## _t * map, KEY_T key, const VAL_T value);               \
+int NAME ## _add(NAME ## _t * map, KEY_T key, VAL_T value);                     \
                                                                                 \
 int NAME ## _remove(NAME ## _t * map, KEY_T key, VAL_T * value);                \
                                                                                 \
@@ -60,6 +64,24 @@ void NAME ## _dump(NAME ## _t * map);
 
 #define TYPEDEF_MAP(NAME, KEY_T, VAL_T, CMP, KEY_SNPRINTF, VALUE_SNPRINTF)      \
                                                                                 \
+NAME ## _pair_t * NAME ## _pair_create(KEY_T key, VAL_T value)                  \
+{                                                                               \
+    /* Create pair */                                                           \
+    NAME ## _pair_t * pair = malloc(sizeof(NAME ## _pair_t));                   \
+    if (!pair)                                                                  \
+        return NULL;                                                            \
+                                                                                \
+    pair->key = key;                                                            \
+    pair->value = value;                                                        \
+                                                                                \
+    return pair;                                                                \
+}                                                                               \
+                                                                                \
+void NAME ## _pair_free(NAME ## _pair_t * pair)                                 \
+{                                                                               \
+    free(pair);                                                                 \
+}                                                                               \
+                                                                                \
 int                                                                             \
 NAME ## _pair_cmp(const NAME ## _pair_t * p1, const NAME ## _pair_t * p2)       \
 {                                                                               \
@@ -72,7 +94,7 @@ NAME ## _pair_snprintf(char * buf, size_t size, const NAME ## _pair_t * pair) {
     rc = KEY_SNPRINTF(buf, BUFSIZE/2, (KEY_T)pair->key);                        \
     if (rc < 0)                                                                 \
         return rc;                                                              \
-    rc = VALUE_SNPRINTF(buf+rc, BUFSIZE/2, (VAL_T)pair->value);             \
+    rc = VALUE_SNPRINTF(buf+rc, BUFSIZE/2, (VAL_T)pair->value);                 \
     return rc;                                                                  \
 }                                                                               \
                                                                                 \
@@ -93,57 +115,98 @@ NAME ## _finalize(NAME ## _t * map)
 AUTOGENERATE_CREATE_FREE(NAME)                                                  \
                                                                                 \
 int                                                                             \
-NAME ## _add(NAME ## _t * map, KEY_T key, const VAL_T value)                    \
+NAME ## _add(NAME ## _t * map, KEY_T key, VAL_T value)                          \
 {                                                                               \
     int rc;                                                                     \
+    NAME ## _pair_t * found = NULL;                                             \
                                                                                 \
-    /* Create pair */                                                           \
-    NAME ## _pair_t * pair = malloc(sizeof(NAME ## _pair_t));                   \
+    NAME ## _pair_t * pair = NAME ## _pair_create(key, value);                  \
     if (!pair)                                                                  \
-        return FACEMGR_FAILURE;                                                 \
-                                                                                \
-    pair->key = key;                                                            \
-    pair->value = (VAL_T)value;                                                 \
+        return -1;                                                 \
                                                                                 \
-    rc = NAME ## _pair_set_get(&map->pair_set, pair, NULL);                     \
-    if (!FACEMGR_IS_ERROR(rc)) {                                                \
-        free(pair);                                                             \
+    rc = NAME ## _pair_set_get(&map->pair_set, pair, &found);                   \
+    if (rc < 0)                                                   \
+        return -1;                                                 \
+    if (found) {                                                                \
+        NAME ## _pair_free(pair);                                               \
         return ERR_MAP_EXISTS;                                                  \
     }                                                                           \
                                                                                 \
     rc = NAME ## _pair_set_add(&map->pair_set, pair);                           \
-    if (FACEMGR_IS_ERROR(rc)) {                                                 \
-        free(pair);                                                             \
-        return FACEMGR_FAILURE;                                                 \
+    if (rc < 0) {                                                 \
+        NAME ## _pair_free(pair);                                               \
+        return -1;                                                 \
     }                                                                           \
-    return FACEMGR_SUCCESS;                                                     \
+    return 0;                                                     \
 }                                                                               \
                                                                                 \
 int                                                                             \
 NAME ## _remove(NAME ## _t * map, KEY_T key, VAL_T * value)                     \
 {                                                                               \
-    NAME ## _pair_t * found, search = { .key = key };                           \
+    NAME ## _pair_t * found = NULL;                                             \
+    NAME ## _pair_t search = { .key = key };                                    \
     int rc = NAME ## _pair_set_remove(&map->pair_set, &search, &found);         \
-    if (FACEMGR_IS_ERROR(rc))                                                   \
+    if (rc < 0)                                                   \
         return ERR_MAP_NOT_FOUND;                                               \
-    *value = found->value;                                                      \
-    return FACEMGR_SUCCESS;                                                     \
+    if (value)                                                                  \
+        *value = found->value;                                                  \
+    NAME ## _pair_free(found);                                                  \
+    return 0;                                                     \
 }                                                                               \
                                                                                 \
 int                                                                             \
 NAME ## _get(NAME ## _t * map, KEY_T key, VAL_T * value)                        \
 {                                                                               \
-    NAME ## _pair_t * found, search = { .key = key };                           \
+    NAME ## _pair_t * found = NULL, search = { .key = key };                    \
     int rc = NAME ## _pair_set_get(&map->pair_set, &search, &found);            \
-    if (FACEMGR_IS_ERROR(rc))                                                   \
-        return ERR_MAP_NOT_FOUND;                                               \
-    *value = found->value;                                                      \
-    return FACEMGR_SUCCESS;                                                     \
+    if (rc < 0)                                                   \
+        return -1;                                                 \
+    if (found)                                                                  \
+        *value = found->value;                                                  \
+    return 0;                                                     \
 }                                                                               \
                                                                                 \
 void                                                                            \
 NAME ## _dump(NAME ## _t * map) {                                               \
     NAME ## _pair_set_dump(&map->pair_set);                                     \
+}                                                                               \
+                                                                                \
+int                                                                             \
+NAME ## _get_key_array(NAME ## _t * map, KEY_T **array) {                       \
+    NAME ## _pair_t ** pair_array;                                              \
+    int n = NAME ## _pair_set_get_array(&map->pair_set, &pair_array);           \
+    if (n < 0)                                                                  \
+        return -1;                                                 \
+    /* Allocate result array */                                                 \
+    array = malloc(n * sizeof(KEY_T));                                          \
+    if (!array) {                                                               \
+        free(pair_array);                                                       \
+        return -1;                                                 \
+    }                                                                           \
+    /* Copy keys */                                                             \
+    for (int i = 0; i < n; i++)                                                 \
+        array[i] = &pair_array[i]->key;                                         \
+    free(pair_array);                                                           \
+    return 0;                                                     \
+}                                                                               \
+                                                                                \
+int                                                                             \
+NAME ## _get_value_array(NAME ## _t * map, VAL_T **array) {                     \
+    NAME ## _pair_t ** pair_array;                                              \
+    int n = NAME ## _pair_set_get_array(&map->pair_set, &pair_array);           \
+    if (n < 0)                                                                  \
+        return -1;                                                 \
+    /* Allocate result array */                                                 \
+    array = malloc(n * sizeof(VAL_T));                                          \
+    if (!array) {                                                               \
+        free(pair_array);                                                       \
+        return -1;                                                 \
+    }                                                                           \
+    /* Copy values */                                                           \
+    for (int i = 0; i < n; i++)                                                 \
+        array[i] = &pair_array[i]->value;                                       \
+    free(pair_array);                                                           \
+    return 0;                                                     \
 }
 
 #endif /* UTIL_MAP_H */
diff --git a/ctrl/facemgr/src/util/policy.c b/ctrl/facemgr/src/util/policy.c
deleted file mode 100644
index 6c8651ee3..000000000
--- a/ctrl/facemgr/src/util/policy.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file policy.h
- * \brief Implementation of policy description
- */
-
-#include <stdio.h>
-#include "policy.h"
-
-const char * policy_tag_str[] = {
-    #define _(x, y) [POLICY_TAG_ ## x] = STRINGIZE(x),
-    foreach_policy_tag
-    #undef _
-};
-
-const char policy_tag_short_str[] = {
-    #define _(x, y) [POLICY_TAG_ ## x] = y,
-    foreach_policy_tag
-    #undef _
-};
-
-const char * policy_state_str[] = {
-    #define _(x) [POLICY_STATE_ ## x] = STRINGIZE(x),
-    foreach_policy_state
-    #undef _
-};
-
-int
-policy_tag_state_snprintf(char * s, size_t size, const policy_tag_state_t * tag_state)
-{
-    char *cur = s;
-    int rc;
-
-    if (tag_state->disabled > 1)
-        return -1;
-
-    rc = snprintf(cur, s + size - cur, "%s%s", (tag_state->disabled == 1) ? "!" : "", policy_state_str[tag_state->state]);
-    if (rc < 0)
-        return rc;
-    cur += rc;
-    if (size != 0 && cur >= s + size)
-        return cur - s;
-
-    return cur - s;
-}
diff --git a/ctrl/facemgr/src/util/policy.h b/ctrl/facemgr/src/util/policy.h
deleted file mode 100644
index e20af6560..000000000
--- a/ctrl/facemgr/src/util/policy.h
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * \file policy.h
- * \brief Policy description
- */
-#ifndef HICN_POLICY_H
-#define HICN_POLICY_H
-
-#include <netinet/in.h> // INET*_ADDRSTRLEN
-#include <string.h> // strcasecmp
-#include "token.h"
-
-/* POLICY TAG */
-
-#define foreach_policy_tag      \
-    /* Interface type */        \
-    _(WIRED, 'E')               \
-    _(WIFI, 'W')                \
-    _(CELLULAR, 'C')            \
-    /* QoS */                   \
-    _(BEST_EFFORT, 'b')         \
-    _(REALTIME, 'r')            \
-    _(MULTIPATH, 'M')           \
-    /* Security */              \
-    _(TRUSTED, 'T')
-
-typedef enum {
-#define _(x, y) POLICY_TAG_ ## x,
-foreach_policy_tag
-#undef _
-    POLICY_TAG_N
-} policy_tag_t;
-
-#define MAXSZ_POLICY_TAG_ 11
-#define MAXSZ_POLICY_TAG MAXSZ_POLICY_TAG_ + 1
-
-extern const char * policy_tag_str[];
-extern const char policy_tag_short_str[];
-
-static inline
-policy_tag_t
-policy_tag_from_str(const char * str)
-{
-#define _(x, y) if (strcasecmp(str, policy_tag_str[POLICY_TAG_ ## x] ) == 0) { return POLICY_TAG_ ## x; } else
-foreach_policy_tag
-#undef _
-    return POLICY_TAG_N;
-}
-
-/* POLICY_TAGS */
-
-typedef int policy_tags_t;
-
-static inline
-void policy_tags_add(policy_tags_t * tags, policy_tag_t tag)
-{
-    *tags |= (1 << tag);
-}
-
-static inline
-void policy_tags_remove(policy_tags_t * tags, policy_tag_t tag)
-{
-    *tags &= ~(1 << tag);
-}
-
-static inline
-int policy_tags_has(policy_tags_t tags, policy_tag_t tag)
-{
-    return tags & (1 << tag);
-}
-
-#define POLICY_TAGS_EMPTY 0
-
-static inline
-int
-policy_tags_snprintf(char * s, size_t size, policy_tags_t tags)
-{
-#define _(x, y) s[POLICY_TAG_ ## x] = policy_tags_has(tags, POLICY_TAG_ ## x) ? y : '.';
-foreach_policy_tag
-#undef _
-    s[POLICY_TAG_N] = '\0';
-    return POLICY_TAG_N + 1;
-}
-
-#define MAXSZ_POLICY_TAGS_ POLICY_TAG_N
-#define MAXSZ_POLICY_TAGS MAXSZ_POLICY_TAGS_ + 1
-
-/* POLICY STATE */
-
-/* TODO vs. weight */
-
-#define foreach_policy_state    \
-    _(NEUTRAL)                  \
-    _(REQUIRE)                  \
-    _(PREFER)                   \
-    _(AVOID)                    \
-    _(PROHIBIT)                 \
-    _(N)
-
-typedef enum {
-#define _(x) POLICY_STATE_ ## x,
-foreach_policy_state
-#undef _
-} policy_state_t;
-
-#define MAXSZ_POLICY_STATE_ 8
-#define MAXSZ_POLICY_STATE MAXSZ_POLICY_STATE_ + 1
-
-extern const char * policy_state_str[];
-
-
-/* POLICY TAG STATE */
-
-typedef struct {
-    policy_state_t state;
-    uint8_t disabled;
-} policy_tag_state_t;
-
-#define MAXSZ_POLICY_TAG_STATE_ 8
-#define MAXSZ_POLICY_TAG_STATE MAXSZ_POLICY_TAG_STATE_ + 1
-
-int policy_tag_state_snprintf(char * s, size_t size, const policy_tag_state_t * tag_state);
-
-
-/* INTERFACE STATS */
-
-typedef struct {
-    float throughput;
-    float latency;
-    float loss_rate;
-} interface_stats_t;
-
-#define INTERFACE_STATS_NONE {                          \
-    .throughput = 0,                                    \
-    .latency = 0,                                       \
-    .loss_rate = 0,                                     \
-}
-
-
-/* POLICY STATS */
-
-typedef struct {
-    interface_stats_t wired;
-    interface_stats_t wifi;
-    interface_stats_t cellular;
-    interface_stats_t all;
-} policy_stats_t;
-
-#define POLICY_STATS_NONE {                     \
-    .wired    = INTERFACE_STATS_NONE,           \
-    .wifi     = INTERFACE_STATS_NONE,           \
-    .cellular = INTERFACE_STATS_NONE,           \
-    .all      = INTERFACE_STATS_NONE,           \
-}
-
-typedef struct {
-    uint32_t num_packets;
-    uint32_t num_bytes;
-    uint32_t num_losses;
-    uint32_t latency_idle;
-} interface_counters_t;
-
-#define INTERFACE_COUNTERS_NONE {               \
-    .num_packets = 0,                           \
-    .num_bytes = 0,                             \
-    .num_losses = 0,                            \
-    .latency_idle = 0,                          \
-}
-
-typedef struct {
-    interface_counters_t wired;
-    interface_counters_t wifi;
-    interface_counters_t cellular;
-    interface_counters_t all;
-    uint64_t last_update;
-} policy_counters_t;
-
-#define POLICY_COUNTERS_NONE (policy_counters_t) {      \
-    .wired    = INTERFACE_COUNTERS_NONE,                \
-    .wifi     = INTERFACE_COUNTERS_NONE,                \
-    .cellular = INTERFACE_COUNTERS_NONE,                \
-    .all      = INTERFACE_COUNTERS_NONE,                \
-    .last_update = 0,                                   \
-}
-
-/* POLICY */
-
-#define APP_NAME_LEN 128
-
-typedef struct {
-    char app_name[APP_NAME_LEN];
-    policy_tag_state_t tags[POLICY_TAG_N];
-    policy_stats_t stats;
-} policy_t;
-
-static const policy_t POLICY_NONE = {
-    .app_name = { 0 },
-    .tags = {
-#define _(x, y) [POLICY_TAG_ ## x] = { POLICY_STATE_NEUTRAL, 0 },
-foreach_policy_tag
-#undef _
-    },
-    .stats = POLICY_STATS_NONE,
-};
-
-
-/* POLICY DESCRIPTION */
-
-#define PFX_STRLEN 4 /* eg. /128 */
-
-typedef struct {
-    int family;
-    union {
-        char ipv4_prefix[INET_ADDRSTRLEN + PFX_STRLEN];
-        char ipv6_prefix[INET6_ADDRSTRLEN + PFX_STRLEN];
-    };
-    policy_t policy;
-} policy_description_t;
-
-#endif /* HICN_POLICY_H */
diff --git a/ctrl/facemgr/src/util/set.h b/ctrl/facemgr/src/util/set.h
index 47a6eeaff..61df209ab 100644
--- a/ctrl/facemgr/src/util/set.h
+++ b/ctrl/facemgr/src/util/set.h
@@ -16,15 +16,27 @@
 #ifndef UTIL_SET_H
 #define UTIL_SET_H
 
+#include <hicn/util/log.h>
 #include <search.h>
 #include <string.h>
-#include "token.h"
+//#if !defined(__ANDROID__) && !defined(__APPLE__)
+//#include <threads.h>
+//#else
+#define thread_local _Thread_local
+//#endif /* ! __ANDROID__ */
 #include "../common.h"
 
 #define ERR_SET_EXISTS -2
 #define ERR_SET_NOT_FOUND -3
 
-#define BUFSIZE 80
+/* FIXME: buffer overflow when this is too small... investigate */
+#define BUFSIZE 1024
+
+static inline
+int
+int_snprintf(char * buf, size_t size, int value) {
+    return snprintf(buf, size, "%d", value);
+}
 
 static inline
 int
@@ -34,7 +46,7 @@ string_snprintf(char * buf, size_t size, const char * s) {
 
 static inline
 int
-generic_snprintf(char * buf, size_t size, void * value) {
+generic_snprintf(char * buf, size_t size, const void * value) {
     return snprintf(buf, BUFSIZE, "%p", value);
 }
 
@@ -57,7 +69,9 @@ int NAME ## _add(NAME ## _t * set, const T element);                    \
                                                                         \
 int NAME ## _remove(NAME ## _t * set, const T search, T * element);     \
                                                                         \
-int NAME ## _get(NAME ## _t * set, const T search, T * element);        \
+int NAME ## _get(const NAME ## _t * set, const T search, T * element);  \
+                                                                        \
+int NAME ## _get_array(const NAME ## _t * set, T ** element);           \
                                                                         \
 void NAME ## _dump(NAME ## _t * set);
 
@@ -70,7 +84,7 @@ NAME ## _initialize(NAME ## _t * set)                                   \
 {                                                                       \
     set->root = NULL;                                                   \
     set->size = 0;                                                      \
-    return FACEMGR_SUCCESS;                                             \
+    return 0;                                                           \
 }                                                                       \
                                                                         \
 NO_FINALIZE(NAME);                                                      \
@@ -79,49 +93,88 @@ AUTOGENERATE_CREATE_FREE(NAME);                                         \
 int                                                                     \
 NAME ## _add(NAME ## _t * set, const T element)                         \
 {                                                                       \
-    return tsearch(element, &set->root, (cmp_t)CMP)              \
-        ? FACEMGR_SUCCESS : FACEMGR_FAILURE;                            \
+    void * ptr = tsearch(element, &set->root, (cmp_t)CMP);              \
+    if (!ptr)                                                           \
+        return -1;                                                      \
+    set->size++;                                                        \
+    return 0;                                                           \
 }                                                                       \
                                                                         \
 int                                                                     \
 NAME ## _remove(NAME ## _t * set, const T search, T * element)          \
 {                                                                       \
-    T * found = tdelete(search, &set->root, (cmp_t)CMP);         \
-    if (found && element)                                               \
+    T * found = tfind(search, &set->root, (cmp_t)CMP);                  \
+    if (!found)                                                         \
+        return ERR_SET_NOT_FOUND;                                       \
+    if (element)                                                        \
         *element = *found;                                              \
-    return found ? FACEMGR_SUCCESS : ERR_SET_NOT_FOUND;                 \
+    tdelete(search, &set->root, (cmp_t)CMP);                            \
+    set->size--;                                                        \
+    return 0;                                                           \
 }                                                                       \
                                                                         \
 int                                                                     \
-NAME ## _get(NAME ## _t * set, const T search, T * element)             \
+NAME ## _get(const NAME ## _t * set, const T search, T * element)       \
 {                                                                       \
     T * found = tfind(search, &set->root, (cmp_t)CMP);                  \
-    if (found && element)                                               \
-        *element = *found;                                              \
-    return found ? FACEMGR_SUCCESS : ERR_SET_NOT_FOUND;                 \
+    if (element)                                                        \
+        *element = found ? *found : NULL;                               \
+    return 0;                                                           \
 }                                                                       \
                                                                         \
-void                                                                    \
-__ ## NAME ## _dump_node(const void *nodep, const VISIT which, const int depth) \
+static void                                                             \
+NAME ## _dump_node(const void *nodep, const VISIT which,                \
+        const int depth)                                                \
 {                                                                       \
     char buf[BUFSIZE];                                                  \
     switch (which) {                                                    \
     case preorder:                                                      \
-        break;                                                          \
-    case postorder:                                                     \
-        break;                                                          \
     case endorder:                                                      \
         break;                                                          \
+    case postorder:                                                     \
     case leaf:                                                          \
         SNPRINTF(buf, BUFSIZE, *(T*)nodep);                             \
-        printf("%s\n", buf);                                            \
+        INFO("%s", buf);                                                \
         break;                                                          \
     }                                                                   \
 }                                                                       \
                                                                         \
 void                                                                    \
 NAME ## _dump(NAME ## _t * set) {                                       \
-    twalk(set->root, __ ## NAME ## _dump_node);                         \
+    twalk(set->root, NAME ## _dump_node);                               \
 }                                                                       \
+                                                                        \
+thread_local                                                            \
+T * NAME ## _array_pos = NULL;                                          \
+                                                                        \
+static void                                                             \
+NAME ## _add_node_to_array(const void *nodep, const VISIT which,        \
+        const int depth)                                                \
+{                                                                       \
+    if (!NAME ## _array_pos)                                            \
+        return;                                                         \
+    switch (which) {                                                    \
+        case preorder:                                                  \
+        case endorder:                                                  \
+            break;                                                      \
+        case postorder:                                                 \
+        case leaf:                                                      \
+            *NAME ## _array_pos = *(T*)nodep;                           \
+            NAME ## _array_pos++;                                       \
+            break;                                                      \
+    }                                                                   \
+}                                                                       \
+                                                                        \
+int                                                                     \
+NAME ## _get_array(const NAME ## _t * set, T ** element)                \
+{                                                                       \
+    *element = malloc(set->size * sizeof(T));                           \
+    if (!*element)                                                      \
+        return -1;                                                      \
+    NAME ## _array_pos = *element;                                      \
+    twalk(set->root, NAME ## _add_node_to_array);                       \
+    NAME ## _array_pos = NULL;                                          \
+    return set->size;                                                   \
+}
 
 #endif /* UTIL_SET_H */
diff --git a/ctrl/facemgr/src/util/token.h b/ctrl/facemgr/src/util/token.h
deleted file mode 100644
index 43e0a77b2..000000000
--- a/ctrl/facemgr/src/util/token.h
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* Token concatenation */
-
-/*
- * Concatenate preprocessor tokens A and B without expanding macro definitions
- * (however, if invoked from a macro, macro arguments are expanded).
- */
-#define PPCAT_NX(A, B) A ## B
-
-/*
- * Concatenate preprocessor tokens A and B after macro-expanding them.
- */
-#define PPCAT(A, B) PPCAT_NX(A, B)
-
-/* Token stringification */
-
-/*
- * Turn A into a string literal without expanding macro definitions
- * (however, if invoked from a macro, macro arguments are expanded).
- */
-#define STRINGIZE_NX(A) #A
-
-/*
- * Turn A into a string literal after macro-expanding it.
- */
-#define STRINGIZE(A) STRINGIZE_NX(A)
diff --git a/ctrl/facemgr/src/util/types.h b/ctrl/facemgr/src/util/types.h
deleted file mode 100644
index 10a0bdca0..000000000
--- a/ctrl/facemgr/src/util/types.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2017-2019 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef UTIL_TYPES
-#define UTIL_TYPES
-
-typedef uint8_t u8;
-typedef uint16_t u16;
-typedef uint32_t u32;
-typedef uint64_t u64;
-
-/* Helper for avoiding warnings about type-punning */
-#define UNION_CAST(x, destType) \
-   (((union {__typeof__(x) a; destType b;})x).b)
-
-typedef unsigned int hash_t;
-
-typedef int (*cmp_t)(const void *, const void *);
-
-/* Enums */
-
-#define IS_VALID_ENUM_TYPE(NAME, x) ((x > NAME ## _UNDEFINED) && (x < NAME ## _N))
-
-#endif /* UTIL_TYPES */