Rename modfied ietf-routing models

Change-Id: I6ea55212dcf3cc6e4015269b501ffd7828096459
Signed-off-by: Marek Gradzki <mgradzki@cisco.com>

1 files changed, 823 insertions, 0 deletions

diff --git a/routing/routing-api/src/main/yang/hc2vpp-ietf-ipv6-unicast-routing@2014-05-25.yang b/routing/routing-api/src/main/yang/hc2vpp-ietf-ipv6-unicast-routing@2014-05-25.yang
new file mode 100644
index 000000000..72c54f2ab
--- /dev/null
+++ b/routing/routing-api/src/main/yang/hc2vpp-ietf-ipv6-unicast-routing@2014-05-25.yang
@@ -0,0 +1,823 @@
+module hc2vpp-ietf-ipv6-unicast-routing {
+
+  namespace "urn:ietf:params:xml:ns:yang:ietf-ipv6-unicast-routing";
+
+  prefix "v6ur";
+
+  import hc2vpp-ietf-routing {
+    prefix "rt";
+    revision-date 2014-05-24;
+  }
+
+  import ietf-inet-types {
+    prefix "inet";
+  }
+
+  import ietf-interfaces {
+    prefix "if";
+  }
+
+  import ietf-ip {
+    prefix "ip";
+  }
+
+  //TODO modification needed because of yangtools bug(unable to proceed augmentation in separate model of augmentation in this model)
+  import vpp-routing {
+    prefix vpp-r;
+  }
+
+  organization
+    "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
+
+  contact
+    "WG Web:   <http://tools.ietf.org/wg/netmod/>
+     WG List:  <mailto:netmod@ietf.org>
+
+     WG Chair: Thomas Nadeau
+               <mailto:tnadeau@lucidvision.com>
+
+     WG Chair: Juergen Schoenwaelder
+               <mailto:j.schoenwaelder@jacobs-university.de>
+
+     Editor:   Ladislav Lhotka
+               <mailto:lhotka@nic.cz>";
+
+  description
+    "This YANG module augments the 'ietf-routing' module with basic
+     configuration and operational state data for IPv6 unicast
+     routing.
+
+     Copyright (c) 2014 IETF Trust and the persons identified as
+     authors of the code. All rights reserved.
+
+     Redistribution and use in source and binary forms, with or
+     without modification, is permitted pursuant to, and subject to
+     the license terms contained in, the Simplified BSD License set
+     forth in Section 4.c of the IETF Trust's Legal Provisions
+     Relating to IETF Documents
+     (http://trustee.ietf.org/license-info).
+
+     This version of this YANG module is part of RFC XXXX; see the
+     RFC itself for full legal notices.";
+
+  revision 2014-05-25 {
+    description
+      "Initial revision.";
+    reference
+      "RFC XXXX: A YANG Data Model for Routing Management";
+  }
+
+  /* Identities */
+
+  identity ipv6-unicast {
+    base rt:ipv6;
+    description
+      "This identity represents the IPv6 unicast address family.";
+  }
+
+  /* Operational state data */
+
+  augment "/rt:routing-state/rt:routing-instance/rt:interfaces/"
+        + "rt:interface" {
+    description
+      "IPv6-specific parameters of router interfaces.";
+    container ipv6-router-advertisements {
+      description
+        "Parameters of IPv6 Router Advertisements.";
+      leaf send-advertisements {
+        type boolean;
+        description
+          "A flag indicating whether or not the router sends periodic
+           Router Advertisements and responds to Router
+           Solicitations.";
+      }
+      leaf max-rtr-adv-interval {
+        type uint16 {
+          range "4..1800";
+        }
+        units "seconds";
+        description
+          "The maximum time allowed between sending unsolicited
+           multicast Router Advertisements from the interface.";
+      }
+      leaf min-rtr-adv-interval {
+        type uint16 {
+          range "3..1350";
+        }
+        units "seconds";
+        description
+          "The minimum time allowed between sending unsolicited
+           multicast Router Advertisements from the interface.";
+      }
+      leaf managed-flag {
+        type boolean;
+        description
+          "The value that is placed in the 'Managed address
+           configuration' flag field in the Router Advertisement.";
+      }
+      leaf other-config-flag {
+        type boolean;
+        description
+          "The value that is placed in the 'Other configuration' flag
+           field in the Router Advertisement.";
+      }
+      leaf link-mtu {
+        type uint32;
+        description
+          "The value that is placed in MTU options sent by the
+           router. A value of zero indicates that no MTU options are
+           sent.";
+      }
+      leaf reachable-time {
+        type uint32 {
+          range "0..3600000";
+        }
+        units "milliseconds";
+        description
+          "The value that is placed in the Reachable Time field in
+           the Router Advertisement messages sent by the router. A
+           value of zero means unspecified (by this router).";
+      }
+      leaf retrans-timer {
+        type uint32;
+        units "milliseconds";
+        description
+          "The value that is placed in the Retrans Timer field in the
+           Router Advertisement messages sent by the router. A value
+           of zero means unspecified (by this router).";
+      }
+      leaf cur-hop-limit {
+        type uint8;
+        description
+          "The value that is placed in the Cur Hop Limit field in the
+           Router Advertisement messages sent by the router. A value
+           of zero means unspecified (by this router).";
+      }
+      leaf default-lifetime {
+        type uint16 {
+          range "0..9000";
+        }
+        units "seconds";
+        description
+          "The value that is placed in the Router Lifetime field of
+           Router Advertisements sent from the interface, in seconds.
+           A value of zero indicates that the router is not to be
+           used as a default router.";
+      }
+      container prefix-list {
+        description
+          "A list of prefixes that are placed in Prefix Information
+           options in Router Advertisement messages sent from the
+           interface.
+
+           By default, these are all prefixes that the router
+           advertises via routing protocols as being on-link for the
+           interface from which the advertisement is sent.";
+        list prefix {
+          key "prefix-spec";
+          description
+            "Advertised prefix entry and its parameters.";
+          leaf prefix-spec {
+            type inet:ipv6-prefix;
+            description
+              "IPv6 address prefix.";
+          }
+          leaf valid-lifetime {
+            type uint32;
+            units "seconds";
+            description
+              "The value that is placed in the Valid Lifetime in the
+               Prefix Information option. The designated value of all
+               1's (0xffffffff) represents infinity.";
+          }
+          leaf on-link-flag {
+            type boolean;
+            description
+              "The value that is placed in the on-link flag ('L-bit')
+               field in the Prefix Information option.";
+          }
+          leaf preferred-lifetime {
+            type uint32;
+            units "seconds";
+            description
+              "The value that is placed in the Preferred Lifetime in
+               the Prefix Information option, in seconds. The
+               designated value of all 1's (0xffffffff) represents
+               infinity.";
+          }
+          leaf autonomous-flag {
+            type boolean;
+            description
+              "The value that is placed in the Autonomous Flag field
+               in the Prefix Information option.";
+          }
+        }
+      }
+    }
+  }
+
+  augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route" {
+    when "../../rt:address-family = 'v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    description
+      "This leaf augments an IPv6 unicast route.";
+    leaf destination-prefix {
+      type inet:ipv6-prefix;
+      description
+        "IPv6 destination prefix.";
+    }
+  }
+
+  augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
+        + "rt:next-hop-options/rt:simple-next-hop" {
+    when "../../rt:address-family = 'v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    description
+      "This leaf augments the 'simple-next-hop' case of IPv6 unicast
+       routes.";
+    leaf next-hop {
+      type inet:ipv6-address;
+      description
+        "IPv6 address of the next-hop.";
+    }
+  }
+
+  augment "/rt:routing-state/rt:ribs/rt:rib/rt:routes/rt:route/"
+        + "rt:next-hop-options/rt:next-hop-list/rt:next-hop-list/"
+        + "rt:next-hop" {
+    when "../../../../rt:address-family = 'v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    if-feature rt:multipath-routes;
+    description
+      "This leaf augments the 'next-hop-list' case of IPv6 unicast
+       routes.";
+    leaf address {
+      type inet:ipv6-address;
+      description
+        "IPv6 address of the next-hop.";
+    }
+  }
+
+  /* Configuration data */
+
+  augment
+    "/rt:routing/rt:routing-instance/rt:interfaces/rt:interface" {
+    when "/if:interfaces/if:interface[if:name=current()/rt:name]/"
+       + "ip:ipv6/ip:enabled='true'" {
+      description
+        "This augment is only valid for router interfaces with
+         enabled IPv6.";
+    }
+    description
+      "Configuration of IPv6-specific parameters of router
+       interfaces.";
+    container ipv6-router-advertisements {
+      description
+        "Configuration of IPv6 Router Advertisements.";
+      leaf send-advertisements {
+        type boolean;
+        default "false";
+        description
+          "A flag indicating whether or not the router sends periodic
+           Router Advertisements and responds to Router
+           Solicitations.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvSendAdvertisements.";
+      }
+      leaf max-rtr-adv-interval {
+        type uint16 {
+          range "4..1800";
+        }
+        units "seconds";
+        default "600";
+        description
+          "The maximum time allowed between sending unsolicited
+           multicast Router Advertisements from the interface.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           MaxRtrAdvInterval.";
+      }
+      leaf min-rtr-adv-interval {
+        type uint16 {
+          range "3..1350";
+        }
+        units "seconds";
+        must ". <= 0.75 * ../max-rtr-adv-interval" {
+          description
+            "The value MUST NOT be greater than 75 % of
+             'max-rtr-adv-interval'.";
+        }
+        description
+          "The minimum time allowed between sending unsolicited
+           multicast Router Advertisements from the interface.
+
+           The default value to be used operationally if this leaf is
+           not configured is determined as follows:
+
+           - if max-rtr-adv-interval >= 9 seconds, the default value
+             is 0.33 * max-rtr-adv-interval;
+
+           - otherwise it is 0.75 * max-rtr-adv-interval.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           MinRtrAdvInterval.";
+      }
+      leaf managed-flag {
+        type boolean;
+        default "false";
+        description
+          "The value to be placed in the 'Managed address
+           configuration' flag field in the Router Advertisement.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvManagedFlag.";
+      }
+      leaf other-config-flag {
+        type boolean;
+        default "false";
+        description
+          "The value to be placed in the 'Other configuration' flag
+           field in the Router Advertisement.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvOtherConfigFlag.";
+      }
+      leaf link-mtu {
+        type uint32;
+        default "0";
+        description
+          "The value to be placed in MTU options sent by the router.
+           A value of zero indicates that no MTU options are sent.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvLinkMTU.";
+      }
+      leaf reachable-time {
+        type uint32 {
+          range "0..3600000";
+        }
+        units "milliseconds";
+        default "0";
+        description
+          "The value to be placed in the Reachable Time field in the
+           Router Advertisement messages sent by the router. A value
+           of zero means unspecified (by this router).";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvReachableTime.";
+      }
+      leaf retrans-timer {
+        type uint32;
+        units "milliseconds";
+        default "0";
+        description
+          "The value to be placed in the Retrans Timer field in the
+           Router Advertisement messages sent by the router. A value
+           of zero means unspecified (by this router).";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvRetransTimer.";
+      }
+      leaf cur-hop-limit {
+        type uint8;
+        description
+          "The value to be placed in the Cur Hop Limit field in the
+           Router Advertisement messages sent by the router. A value
+           of zero means unspecified (by this router).
+
+           If this parameter is not configured, the device SHOULD use
+           the value specified in IANA Assigned Numbers that was in
+           effect at the time of implementation.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvCurHopLimit.
+
+           IANA: IP Parameters,
+           http://www.iana.org/assignments/ip-parameters";
+      }
+      leaf default-lifetime {
+        type uint16 {
+          range "0..9000";
+        }
+        units "seconds";
+        description
+          "The value to be placed in the Router Lifetime field of
+           Router Advertisements sent from the interface, in seconds.
+           It MUST be either zero or between max-rtr-adv-interval and
+           9000 seconds. A value of zero indicates that the router is
+           not to be used as a default router. These limits may be
+           overridden by specific documents that describe how IPv6
+           operates over different link layers.
+
+           If this parameter is not configured, the device SHOULD use
+           a value of 3 * max-rtr-adv-interval.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvDefaultLifeTime.";
+      }
+      container prefix-list {
+        description
+          "Configuration of prefixes to be placed in Prefix
+           Information options in Router Advertisement messages sent
+           from the interface.
+
+           Prefixes that are advertised by default but do not have
+           their entries in the child 'prefix' list are advertised
+           with the default values of all parameters.
+
+           The link-local prefix SHOULD NOT be included in the list
+           of advertised prefixes.";
+        reference
+          "RFC 4861: Neighbor Discovery for IP version 6 (IPv6) -
+           AdvPrefixList.";
+        list prefix {
+          key "prefix-spec";
+          description
+            "Configuration of an advertised prefix entry.";
+          leaf prefix-spec {
+            type inet:ipv6-prefix;
+            description
+              "IPv6 address prefix.";
+          }
+          choice control-adv-prefixes {
+            default "advertise";
+            description
+              "The prefix either may be explicitly removed from the
+               set of advertised prefixes, or parameters with which
+               it is advertised may be specified (default case).";
+            leaf no-advertise {
+              type empty;
+              description
+                "The prefix will not be advertised.
+
+                 This can be used for removing the prefix from the
+                 default set of advertised prefixes.";
+            }
+            case advertise {
+              leaf valid-lifetime {
+                type uint32;
+                units "seconds";
+                default "2592000";
+                description
+                  "The value to be placed in the Valid Lifetime in
+                   the Prefix Information option. The designated
+                   value of all 1's (0xffffffff) represents
+                   infinity.";
+                reference
+                  "RFC 4861: Neighbor Discovery for IP version 6
+                   (IPv6) - AdvValidLifetime.";
+              }
+              leaf on-link-flag {
+                type boolean;
+                default "true";
+                description
+                  "The value to be placed in the on-link flag
+                   ('L-bit') field in the Prefix Information
+                   option.";
+                reference
+                  "RFC 4861: Neighbor Discovery for IP version 6
+                   (IPv6) - AdvOnLinkFlag.";
+              }
+              leaf preferred-lifetime {
+                type uint32;
+                units "seconds";
+                must ". <= ../valid-lifetime" {
+                  description
+                    "This value MUST NOT be greater than
+                     valid-lifetime.";
+                }
+                default "604800";
+                description
+                  "The value to be placed in the Preferred Lifetime
+                   in the Prefix Information option. The designated
+                   value of all 1's (0xffffffff) represents
+                   infinity.";
+                reference
+                  "RFC 4861: Neighbor Discovery for IP version 6
+                   (IPv6) - AdvPreferredLifetime.";
+              }
+              leaf autonomous-flag {
+                type boolean;
+                default "true";
+                description
+                  "The value to be placed in the Autonomous Flag
+                   field in the Prefix Information option.";
+                reference
+                  "RFC 4861: Neighbor Discovery for IP version 6
+                   (IPv6) - AdvAutonomousFlag.";
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+
+  //NOTE - added same augmentation for operational state
+
+  augment "/rt:routing-state/rt:routing-instance/rt:routing-protocols/rt:routing-protocol/rt:static-routes" {
+      description
+        "This augment defines the configuration of the 'static'
+         pseudo-protocol with data specific to IPv6 unicast.";
+      container ipv6 {
+        description
+          "Configuration of a 'static' pseudo-protocol instance
+           consists of a list of routes.";
+        list route {
+          key "id";
+          ordered-by "user";
+          description
+            "A user-ordered list of static routes.";
+          leaf id {
+            type uint32 {
+              //WARNING - range changed from 1..max to be mappable on vpp table ids
+              range "0..max";
+            }
+            description
+              "Unique numeric identifier of the route.
+
+               This value is unrelated to system-assigned 'id'
+               parameters of routes in RIBs.";
+          }
+          leaf description {
+            type string;
+            description
+              "Textual description of the route.";
+          }
+          leaf destination-prefix {
+            type inet:ipv6-prefix;
+            mandatory "true";
+            description
+              "IPv6 destination prefix.";
+          }
+          choice next-hop-options {
+            mandatory "true";
+            description
+              "Options for expressing the next-hop in static routes.";
+            case special-next-hop {
+              //WARNING - changed, see ietf-routing.yang
+              uses rt:special-next-hop-grouping;
+            }
+            case simple-next-hop {
+              leaf next-hop {
+                type inet:ipv6-address;
+                description
+                  "IPv6 address of the next-hop.";
+              }
+              //TODO - temporarily set to absolute path until https://bugs.opendaylight.org/show_bug.cgi?id=6881 is resolved
+              leaf outgoing-interface {
+                type leafref {
+                  path "/rt:routing/rt:routing-instance/rt:interfaces/rt:interface/"
+                                     + "rt:name";
+                }
+                description
+                  "Name of the outgoing interface.
+
+                   Only interfaces configured for the ancestor routing
+                   instance can be given.";
+              }
+            }
+            case next-hop-list {
+              if-feature rt:multipath-routes;
+              container next-hop-list {
+                description
+                  "Configuration of multiple next-hops.";
+                list next-hop {
+                  key "id";
+                  description
+                    "An entry of a next-hop list.";
+                  leaf id {
+                    type uint32;
+                    description
+                      "Unique numeric identifier of the entry.
+
+                       This value is unrelated to system-assigned 'id'
+                       parameters of next-hops in RIBs.";
+                  }
+                  leaf address {
+                    type inet:ipv6-address;
+                    description
+                      "IPv6 address of the next-hop.";
+                  }
+                  //TODO - temporarily set to absolute path until https://bugs.opendaylight.org/show_bug.cgi?id=6881 is resolved
+                  leaf outgoing-interface {
+                    type leafref {
+                      path "/rt:routing/rt:routing-instance/rt:interfaces/rt:interface/"
+                                         + "rt:name";
+                    }
+                    description
+                      "Name of the outgoing interface.
+
+                       Only interfaces configured for the ancestor
+                       routing instance can be given.";
+                  }
+                  uses rt:next-hop-classifiers {
+                    refine "priority" {
+                      default "primary";
+                    }
+                    refine "weight" {
+                      default "0";
+                    }
+                  }
+                }
+              }
+            }
+          }
+
+          //TODO modification needed because of yangtools bug(unable to proceed augmentation in separate model of augmentation in this model)
+          container vpp-ipv6-route-state{
+              uses vpp-r:vpp-route-attributes;
+          }
+        }
+      }
+    }
+
+  augment "/rt:routing/rt:routing-instance/rt:routing-protocols/rt:routing-protocol/rt:static-routes" {
+    description
+      "This augment defines the configuration of the 'static'
+       pseudo-protocol with data specific to IPv6 unicast.";
+    container ipv6 {
+      description
+        "Configuration of a 'static' pseudo-protocol instance
+         consists of a list of routes.";
+      list route {
+        key "id";
+        ordered-by "user";
+        description
+          "A user-ordered list of static routes.";
+        leaf id {
+          type uint32 {
+            //WARNING - range changed from 1..max to be mappable on vpp table ids
+            range "0..max";
+          }
+          description
+            "Unique numeric identifier of the route.
+
+             This value is unrelated to system-assigned 'id'
+             parameters of routes in RIBs.";
+        }
+        leaf description {
+          type string;
+          description
+            "Textual description of the route.";
+        }
+        leaf destination-prefix {
+          type inet:ipv6-prefix;
+          mandatory "true";
+          description
+            "IPv6 destination prefix.";
+        }
+        choice next-hop-options {
+          mandatory "true";
+          description
+            "Options for expressing the next-hop in static routes.";
+          case special-next-hop {
+            //WARNING - changed, see ietf-routing.yang
+            uses rt:special-next-hop-grouping;
+          }
+          case simple-next-hop {
+            leaf next-hop {
+              type inet:ipv6-address;
+              description
+                "IPv6 address of the next-hop.";
+            }
+            //TODO - temporarily set to absolute path until https://bugs.opendaylight.org/show_bug.cgi?id=6881 is resolved
+            leaf outgoing-interface {
+              type leafref {
+                path "/rt:routing/rt:routing-instance/rt:interfaces/rt:interface/"
+                                   + "rt:name";
+              }
+              description
+                "Name of the outgoing interface.
+
+                 Only interfaces configured for the ancestor routing
+                 instance can be given.";
+            }
+          }
+          case next-hop-list {
+            if-feature rt:multipath-routes;
+            container next-hop-list {
+              description
+                "Configuration of multiple next-hops.";
+              list next-hop {
+                key "id";
+                description
+                  "An entry of a next-hop list.";
+                leaf id {
+                  type uint32;
+                  description
+                    "Unique numeric identifier of the entry.
+
+                     This value is unrelated to system-assigned 'id'
+                     parameters of next-hops in RIBs.";
+                }
+                leaf address {
+                  type inet:ipv6-address;
+                  description
+                    "IPv6 address of the next-hop.";
+                }
+                //TODO - temporarily set to absolute path until https://bugs.opendaylight.org/show_bug.cgi?id=6881 is resolved
+                leaf outgoing-interface {
+                  type leafref {
+                    path "/rt:routing/rt:routing-instance/rt:interfaces/rt:interface/"
+                                       + "rt:name";
+                  }
+                  description
+                    "Name of the outgoing interface.
+
+                     Only interfaces configured for the ancestor
+                     routing instance can be given.";
+                }
+                uses rt:next-hop-classifiers {
+                  refine "priority" {
+                    default "primary";
+                  }
+                  refine "weight" {
+                    default "0";
+                  }
+                }
+              }
+            }
+          }
+        }
+
+        //TODO modification needed because of yangtools bug(unable to proceed augmentation in separate model of augmentation in this model)
+        container vpp-ipv6-route{
+            uses vpp-r:vpp-route-attributes;
+        }
+      }
+    }
+  }
+
+  /* RPC methods */
+
+  augment "/rt:active-route/rt:input/rt:destination-address" {
+    when "rt:address-family='v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    description
+      "This leaf augments the 'rt:destination-address' parameter of
+       the 'rt:active-route' operation.";
+    leaf address {
+      type inet:ipv6-address;
+      description
+        "IPv6 destination address.";
+    }
+  }
+
+  augment "/rt:active-route/rt:output/rt:route" {
+    when "rt:address-family='v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    description
+      "This leaf augments the reply to the 'rt:active-route'
+       operation.";
+    leaf destination-prefix {
+      type inet:ipv6-prefix;
+      description
+        "IPv6 destination prefix.";
+    }
+  }
+
+  augment "/rt:active-route/rt:output/rt:route/rt:next-hop-options/"
+        + "rt:simple-next-hop" {
+    when "rt:address-family='v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    description
+      "This leaf augments the 'simple-next-hop' case in the reply to
+       the 'rt:active-route' operation.";
+    leaf next-hop {
+      type inet:ipv6-address;
+      description
+        "IPv6 address of the next-hop.";
+    }
+  }
+
+  augment "/rt:active-route/rt:output/rt:route/rt:next-hop-options/"
+        + "rt:next-hop-list/rt:next-hop-list/rt:next-hop" {
+    when "../../rt:address-family='v6ur:ipv6-unicast'" {
+      description
+        "This augment is valid only for IPv6 unicast.";
+    }
+    if-feature rt:multipath-routes;
+    description
+      "This leaf augments the 'next-hop-list' case in the reply to
+       the 'rt:active-route' operation.";
+    leaf address {
+      type inet:ipv6-address;
+      description
+        "IPv6 address of the next-hop.";
+    }
+  }
+}
\ No newline at end of file