Support kube-proxy data plane

This plugin provides kube-proxy data plane on user space,
which is used to replace linux kernal's kube-proxy based on iptables.
The idea is largely inspired from VPP LB plugin.

Currently, kube-proxy plugin supports three service types:
1) Cluster IP plus Port: support any protocols, including TCP, UDP.
2) Node IP plus Node Port: currently only support UDP.
3) External Load Balancer.

Please refer to kp_plugin_doc.md for details.

Change-Id: I36690e417dd26ad5ec1bd77c7ea4b8100416cac6
Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>

9 files changed, 3552 insertions, 0 deletions

diff --git a/src/plugins/kubeproxy/kp.api b/src/plugins/kubeproxy/kp.api
new file mode 100644
index 00000000000..e8063c194b3
--- /dev/null
+++ b/src/plugins/kubeproxy/kp.api
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2017 Intel 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.
+ */
+ 
+vl_api_version 1.0.0
+
+/** \brief Configure Kube-proxy global parameters
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param sticky_buckets_per_core - Number of buckets *per worker thread* in the
+           established flow table (must be power of 2).
+    @param flow_timeout - Time in seconds after which, if no packet is received
+           for a given flow, the flow is removed from the established flow table.
+*/
+autoreply define kp_conf
+{
+  u32 client_index;
+  u32 context;
+  u32 sticky_buckets_per_core;
+  u32 flow_timeout;
+};
+
+/** \brief Add a virtual address (or prefix)
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param ip_prefix - IP address (IPv4 in lower order 32 bits).
+    @param prefix_length - IP prefix length (96 + 'IPv4 prefix length' for IPv4).
+    @param is_ipv6 - Is IPv6 addresss.
+    @param port - service port;
+    @param target_port - Pod's port corresponding to specific service.
+    @param node_port - Node's port.
+    @param is_nat4 - DNAT is NAT44 (NAT64 otherwise).
+    @param new_flows_table_length - Size of the new connections flow table used
+           for this VIP (must be power of 2).
+    @param is_del - The VIP should be removed.
+*/
+autoreply define kp_add_del_vip {
+  u32 client_index;
+  u32 context;
+  u8 ip_prefix[16];
+  u8 prefix_length;
+  u8 is_ipv6;
+  u16 port;
+  u16 target_port;
+  u16 node_port;
+  u8 is_nat4;
+  u32 new_flows_table_length;
+  u8 is_del;
+};
+
+/** \brief Add a pod for a given VIP
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param vip_ip_prefix - VIP IP address (IPv4 in lower order 32 bits).
+    @param vip_ip_prefix - VIP IP prefix length (96 + 'IPv4 prefix length' for IPv4).
+    @param vip_is_ipv6 - VIP is IPv6 addresss.
+    @param pod_address - The pod's IP address (IPv4 in lower order 32 bits).
+    @param pod_is_ipv6 - Pod is IPv6 addresss.
+    @param is_del - The Pod should be removed.
+*/
+autoreply define kp_add_del_pod {
+  u32 client_index;
+  u32 context;
+  u8 vip_ip_prefix[16];
+  u8 vip_prefix_length;
+  u8 vip_is_ipv6;
+  u8 pod_address[16];
+  u8 pod_is_ipv6;
+  u8 is_del;
+};
diff --git a/src/plugins/kubeproxy/kp.c b/src/plugins/kubeproxy/kp.c
new file mode 100644
index 00000000000..1a087e82073
--- /dev/null
+++ b/src/plugins/kubeproxy/kp.c
@@ -0,0 +1,974 @@
+/*
+ * Copyright (c) 2017 Intel 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 anated to in writing, software
+ * distributed under the License is distributed on an "POD IS" BPODIS,
+ * 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 <kubeproxy/kp.h>
+#include <vnet/plugin/plugin.h>
+#include <vpp/app/version.h>
+#include <vnet/api_errno.h>
+#include <vnet/udp/udp.h>
+
+//GC runs at most once every so many seconds
+#define KP_GARBAGE_RUN 60
+
+//After so many seconds. It is assumed that inter-core race condition will not occur.
+#define KP_CONCURRENCY_TIMEOUT 10
+
+kp_main_t kp_main;
+
+#define kp_get_writer_lock() do {} while(__sync_lock_test_and_set (kp_main.writer_lock, 1))
+#define kp_put_writer_lock() kp_main.writer_lock[0] = 0
+
+static void kp_pod_stack (kp_pod_t *pod);
+
+void ip46_prefix_normalize(ip46_address_t *prefix, u8 plen)
+{
+  if (plen == 0) {
+    prefix->as_u64[0] = 0;
+    prefix->as_u64[1] = 0;
+  } else if (plen <= 64) {
+    prefix->as_u64[0] &= clib_host_to_net_u64(0xffffffffffffffffL << (64 - plen));
+    prefix->as_u64[1] = 0;
+  } else {
+    prefix->as_u64[1] &= clib_host_to_net_u64(0xffffffffffffffffL << (128 - plen));
+  }
+
+}
+
+uword unformat_ip46_prefix (unformat_input_t * input, va_list * args)
+{
+  ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+  u8 *len = va_arg (*args, u8 *);
+  ip46_type_t type = va_arg (*args, ip46_type_t);
+
+  u32 l;
+  if ((type != IP46_TYPE_IP6) && unformat(input, "%U/%u", unformat_ip4_address, &ip46->ip4, &l)) {
+    if (l > 32)
+      return 0;
+    *len = l + 96;
+    ip46->pad[0] = ip46->pad[1] = ip46->pad[2] = 0;
+  } else if ((type != IP46_TYPE_IP4) && unformat(input, "%U/%u", unformat_ip6_address, &ip46->ip6, &l)) {
+    if (l > 128)
+      return 0;
+    *len = l;
+  } else {
+    return 0;
+  }
+  return 1;
+}
+
+u8 *format_ip46_prefix (u8 * s, va_list * args)
+{
+  ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+  u32 len = va_arg (*args, u32); //va_arg cannot use u8 or u16
+  ip46_type_t type = va_arg (*args, ip46_type_t);
+
+  int is_ip4 = 0;
+  if (type == IP46_TYPE_IP4)
+    is_ip4 = 1;
+  else if (type == IP46_TYPE_IP6)
+    is_ip4 = 0;
+  else
+    is_ip4 = (len >= 96) && ip46_address_is_ip4(ip46);
+
+  return is_ip4 ?
+      format(s, "%U/%d", format_ip4_address, &ip46->ip4, len - 96):
+      format(s, "%U/%d", format_ip6_address, &ip46->ip6, len);
+}
+
+const static char * const kp_dpo_nat4_ip4[] = { "kp4-nat4" , NULL };
+const static char * const kp_dpo_nat4_ip6[] = { "kp6-nat4" , NULL };
+const static char* const * const kp_dpo_nat4_nodes[DPO_PROTO_NUM] =
+    {
+	[DPO_PROTO_IP4]  = kp_dpo_nat4_ip4,
+	[DPO_PROTO_IP6]  = kp_dpo_nat4_ip6,
+    };
+
+const static char * const kp_dpo_nat6_ip4[] = { "kp4-nat6" , NULL };
+const static char * const kp_dpo_nat6_ip6[] = { "kp6-nat6" , NULL };
+const static char* const * const kp_dpo_nat6_nodes[DPO_PROTO_NUM] =
+    {
+	[DPO_PROTO_IP4]  = kp_dpo_nat6_ip4,
+	[DPO_PROTO_IP6]  = kp_dpo_nat6_ip6,
+    };
+
+u32 kp_hash_time_now(vlib_main_t * vm)
+{
+  return (u32) (vlib_time_now(vm) + 10000);
+}
+
+u8 *format_kp_main (u8 * s, va_list * args)
+{
+  vlib_thread_main_t *tm = vlib_get_thread_main();
+  kp_main_t *kpm = &kp_main;
+  s = format(s, "kp_main");
+  s = format(s, " #vips: %u\n", pool_elts(kpm->vips));
+  s = format(s, " #pods: %u\n", pool_elts(kpm->pods) - 1);
+
+  u32 thread_index;
+  for(thread_index = 0; thread_index < tm->n_vlib_mains; thread_index++ ) {
+    kp_hash_t *h = kpm->per_cpu[thread_index].sticky_ht;
+    if (h) {
+      s = format(s, "core %d\n", thread_index);
+      s = format(s, "  timeout: %ds\n", h->timeout);
+      s = format(s, "  usage: %d / %d\n", kp_hash_elts(h, kp_hash_time_now(vlib_get_main())),  kp_hash_size(h));
+    }
+  }
+
+  return s;
+}
+
+static char *kp_vip_type_strings[] = {
+    [KP_VIP_TYPE_IP4_NAT44] = "ip4-nat44",
+    [KP_VIP_TYPE_IP4_NAT46] = "ip4-nat46",
+    [KP_VIP_TYPE_IP6_NAT64] = "ip6-nat64",
+    [KP_VIP_TYPE_IP6_NAT66] = "ip6-nat66",
+};
+
+u8 *format_kp_vip_type (u8 * s, va_list * args)
+{
+  kp_vip_type_t vipt = va_arg (*args, kp_vip_type_t);
+  u32 i;
+  for (i=0; i<KP_VIP_N_TYPES; i++)
+    if (vipt == i)
+      return format(s, kp_vip_type_strings[i]);
+  return format(s, "_WRONG_TYPE_");
+}
+
+uword unformat_kp_vip_type (unformat_input_t * input, va_list * args)
+{
+  kp_vip_type_t *vipt = va_arg (*args, kp_vip_type_t *);
+  u32 i;
+  for (i=0; i<KP_VIP_N_TYPES; i++)
+    if (unformat(input, kp_vip_type_strings[i])) {
+      *vipt = i;
+      return 1;
+    }
+  return 0;
+}
+
+u8 *format_kp_vip (u8 * s, va_list * args)
+{
+  kp_vip_t *vip = va_arg (*args, kp_vip_t *);
+  return format(s, "%U %U port:%u target_port:%u node_port:%u "
+                   "new_size:%u #pod:%u%s",
+             format_kp_vip_type, vip->type,
+             format_ip46_prefix, &vip->prefix, vip->plen, IP46_TYPE_ANY,
+	     ntohs(vip->port), ntohs(vip->target_port),
+	     ntohs(vip->node_port),
+             vip->new_flow_table_mask + 1,
+             pool_elts(vip->pod_indexes),
+             (vip->flags & KP_VIP_FLAGS_USED)?"":" removed");
+}
+
+u8 *format_kp_pod (u8 * s, va_list * args)
+{
+  kp_pod_t *pod = va_arg (*args, kp_pod_t *);
+  return format(s, "%U %s", format_ip46_address,
+		&pod->address, IP46_TYPE_ANY,
+		(pod->flags & KP_POD_FLAGS_USED)?"used":"removed");
+}
+
+u8 *format_kp_vip_detailed (u8 * s, va_list * args)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_vip_t *vip = va_arg (*args, kp_vip_t *);
+  uword indent = format_get_indent (s);
+
+  s = format(s, "%U %U [%u] %U port:%u target_port:%u node_port:%u%s\n"
+                   "%U  new_size:%u\n",
+                  format_white_space, indent,
+                  format_kp_vip_type, vip->type,
+                  vip - kpm->vips, format_ip46_prefix, &vip->prefix, vip->plen, IP46_TYPE_ANY,
+		  ntohs(vip->port), ntohs(vip->target_port),
+		  ntohs(vip->node_port),
+                  (vip->flags & KP_VIP_FLAGS_USED)?"":" removed",
+                  format_white_space, indent,
+                  vip->new_flow_table_mask + 1);
+
+  //Print counters
+  s = format(s, "%U  counters:\n",
+             format_white_space, indent);
+  u32 i;
+  for (i=0; i<KP_N_VIP_COUNTERS; i++)
+    s = format(s, "%U    %s: %d\n",
+               format_white_space, indent,
+               kpm->vip_counters[i].name,
+               vlib_get_simple_counter(&kpm->vip_counters[i], vip - kpm->vips));
+
+
+  s = format(s, "%U  #pod:%u\n",
+             format_white_space, indent,
+             pool_elts(vip->pod_indexes));
+
+  //Let's count the buckets for each POD
+  u32 *count = 0;
+  vec_validate(count, pool_len(kpm->pods)); //Possibly big alloc for not much...
+  kp_new_flow_entry_t *nfe;
+  vec_foreach(nfe, vip->new_flow_table)
+    count[nfe->pod_index]++;
+
+  kp_pod_t *pod;
+  u32 *pod_index;
+  pool_foreach(pod_index, vip->pod_indexes, {
+      pod = &kpm->pods[*pod_index];
+      s = format(s, "%U    %U %d buckets   %d flows  dpo:%u %s\n",
+                   format_white_space, indent,
+                   format_ip46_address, &pod->address, IP46_TYPE_ANY,
+                   count[pod - kpm->pods],
+                   vlib_refcount_get(&kpm->pod_refcount, pod - kpm->pods),
+                   pod->dpo.dpoi_index,
+                   (pod->flags & KP_POD_FLAGS_USED)?"used":" removed");
+  });
+
+  vec_free(count);
+
+  /*
+  s = format(s, "%U  new flows table:\n", format_white_space, indent);
+  kp_new_flow_entry_t *nfe;
+  vec_foreach(nfe, vip->new_flow_table) {
+    s = format(s, "%U    %d: %d\n", format_white_space, indent, nfe - vip->new_flow_table, nfe->pod_index);
+  }
+  */
+  return s;
+}
+
+typedef struct {
+  u32 pod_index;
+  u32 last;
+  u32 skip;
+} kp_pseudorand_t;
+
+static int kp_pseudorand_compare(void *a, void *b)
+{
+  kp_pod_t *poda, *podb;
+  kp_main_t *kpm = &kp_main;
+  poda = &kpm->pods[((kp_pseudorand_t *)a)->pod_index];
+  podb = &kpm->pods[((kp_pseudorand_t *)b)->pod_index];
+  return memcmp(&poda->address, &podb->address, sizeof(podb->address));
+}
+
+static void kp_vip_garbage_collection(kp_vip_t *vip)
+{
+  kp_main_t *kpm = &kp_main;
+  ASSERT (kpm->writer_lock[0]);
+
+  u32 now = (u32) vlib_time_now(vlib_get_main());
+  if (!clib_u32_loop_gt(now, vip->last_garbage_collection + KP_GARBAGE_RUN))
+    return;
+
+  vip->last_garbage_collection = now;
+  kp_pod_t *pod;
+  u32 *pod_index;
+  pool_foreach(pod_index, vip->pod_indexes, {
+      pod = &kpm->pods[*pod_index];
+      if (!(pod->flags & KP_POD_FLAGS_USED) && //Not used
+	  clib_u32_loop_gt(now, pod->last_used + KP_CONCURRENCY_TIMEOUT) && //Not recently used
+	  (vlib_refcount_get(&kpm->pod_refcount, pod - kpm->pods) == 0))
+	{ //Not referenced
+	  fib_entry_child_remove(pod->next_hop_fib_entry_index,
+				 pod->next_hop_child_index);
+	  fib_table_entry_delete_index(pod->next_hop_fib_entry_index,
+				       FIB_SOURCE_RR);
+	  pod->next_hop_fib_entry_index = FIB_NODE_INDEX_INVALID;
+
+	  pool_put(vip->pod_indexes, pod_index);
+	  pool_put(kpm->pods, pod);
+	}
+  });
+}
+
+void kp_garbage_collection()
+{
+  kp_main_t *kpm = &kp_main;
+  kp_get_writer_lock();
+  kp_vip_t *vip;
+  u32 *to_be_removed_vips = 0, *i;
+  pool_foreach(vip, kpm->vips, {
+      kp_vip_garbage_collection(vip);
+
+      if (!(vip->flags & KP_VIP_FLAGS_USED) &&
+          (pool_elts(vip->pod_indexes) == 0)) {
+        vec_add1(to_be_removed_vips, vip - kpm->vips);
+      }
+  });
+
+  vec_foreach(i, to_be_removed_vips) {
+    vip = &kpm->vips[*i];
+    pool_put(kpm->vips, vip);
+    pool_free(vip->pod_indexes);
+  }
+
+  vec_free(to_be_removed_vips);
+  kp_put_writer_lock();
+}
+
+static void kp_vip_update_new_flow_table(kp_vip_t *vip)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_new_flow_entry_t *old_table;
+  u32 i, *pod_index;
+  kp_new_flow_entry_t *new_flow_table = 0;
+  kp_pod_t *pod;
+  kp_pseudorand_t *pr, *sort_arr = 0;
+  u32 count;
+
+  ASSERT (kpm->writer_lock[0]); //We must have the lock
+
+  //Check if some POD is configured or not
+  i = 0;
+  pool_foreach(pod_index, vip->pod_indexes, {
+      pod = &kpm->pods[*pod_index];
+      if (pod->flags & KP_POD_FLAGS_USED) { //Not used anymore
+        i = 1;
+        goto out; //Not sure 'break' works in this macro-loop
+      }
+  });
+
+out:
+  if (i == 0) {
+    //Only the default. i.e. no POD
+    vec_validate(new_flow_table, vip->new_flow_table_mask);
+    for (i=0; i<vec_len(new_flow_table); i++)
+      new_flow_table[i].pod_index = 0;
+
+    goto finished;
+  }
+
+  //First, let's sort the PODs
+  sort_arr = 0;
+  vec_alloc(sort_arr, pool_elts(vip->pod_indexes));
+
+  i = 0;
+  pool_foreach(pod_index, vip->pod_indexes, {
+      pod = &kpm->pods[*pod_index];
+      if (!(pod->flags & KP_POD_FLAGS_USED)) //Not used anymore
+        continue;
+
+      sort_arr[i].pod_index = pod - kpm->pods;
+      i++;
+  });
+  _vec_len(sort_arr) = i;
+
+  vec_sort_with_function(sort_arr, kp_pseudorand_compare);
+
+  //Now let's pseudo-randomly generate permutations
+  vec_foreach(pr, sort_arr) {
+    kp_pod_t *pod = &kpm->pods[pr->pod_index];
+
+    u64 seed = clib_xxhash(pod->address.as_u64[0] ^
+                           pod->address.as_u64[1]);
+    /* We have 2^n buckets.
+     * skip must be prime with 2^n.
+     * So skip must be odd.
+     * MagLev actually state that M should be prime,
+     * but this has a big computation cost (% operation).
+     * Using 2^n is more better (& operation).
+     */
+    pr->skip = ((seed & 0xffffffff) | 1) & vip->new_flow_table_mask;
+    pr->last = (seed >> 32) & vip->new_flow_table_mask;
+  }
+
+  //Let's create a new flow table
+  vec_validate(new_flow_table, vip->new_flow_table_mask);
+  for (i=0; i<vec_len(new_flow_table); i++)
+    new_flow_table[i].pod_index = ~0;
+
+  u32 done = 0;
+  while (1) {
+    vec_foreach(pr, sort_arr) {
+      while (1) {
+        u32 last = pr->last;
+        pr->last = (pr->last + pr->skip) & vip->new_flow_table_mask;
+        if (new_flow_table[last].pod_index == ~0) {
+          new_flow_table[last].pod_index = pr->pod_index;
+          break;
+        }
+      }
+      done++;
+      if (done == vec_len(new_flow_table))
+        goto finished;
+    }
+  }
+
+  vec_free(sort_arr);
+
+finished:
+
+//Count number of changed entries
+  count = 0;
+  for (i=0; i<vec_len(new_flow_table); i++)
+    if (vip->new_flow_table == 0 ||
+        new_flow_table[i].pod_index != vip->new_flow_table[i].pod_index)
+      count++;
+
+  old_table = vip->new_flow_table;
+  vip->new_flow_table = new_flow_table;
+  vec_free(old_table);
+}
+
+int kp_conf(u32 per_cpu_sticky_buckets, u32 flow_timeout)
+{
+  kp_main_t *kpm = &kp_main;
+
+  if (!is_pow2(per_cpu_sticky_buckets))
+    return VNET_API_ERROR_INVALID_MEMORY_SIZE;
+
+  kp_get_writer_lock(); //Not exactly necessary but just a reminder that it exists for my future self
+  kpm->per_cpu_sticky_buckets = per_cpu_sticky_buckets;
+  kpm->flow_timeout = flow_timeout;
+  kp_put_writer_lock();
+  return 0;
+}
+
+static
+int kp_vip_find_index_with_lock(ip46_address_t *prefix, u8 plen, u32 *vip_index)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_vip_t *vip;
+  ASSERT (kpm->writer_lock[0]); //This must be called with the lock owned
+  ip46_prefix_normalize(prefix, plen);
+  pool_foreach(vip, kpm->vips, {
+      if ((vip->flags & KP_POD_FLAGS_USED) &&
+          vip->plen == plen &&
+          vip->prefix.as_u64[0] == prefix->as_u64[0] &&
+          vip->prefix.as_u64[1] == prefix->as_u64[1]) {
+        *vip_index = vip - kpm->vips;
+        return 0;
+      }
+  });
+  return VNET_API_ERROR_NO_SUCH_ENTRY;
+}
+
+int kp_vip_find_index(ip46_address_t *prefix, u8 plen, u32 *vip_index)
+{
+  int ret;
+  kp_get_writer_lock();
+  ret = kp_vip_find_index_with_lock(prefix, plen, vip_index);
+  kp_put_writer_lock();
+  return ret;
+}
+
+static int kp_pod_find_index_vip(kp_vip_t *vip, ip46_address_t *address, u32 *pod_index)
+{
+  kp_main_t *kpm = &kp_main;
+  ASSERT (kpm->writer_lock[0]); //This must be called with the lock owned
+  kp_pod_t *pod;
+  u32 *podi;
+  pool_foreach(podi, vip->pod_indexes, {
+      pod = &kpm->pods[*podi];
+      if (pod->vip_index == (vip - kpm->vips) &&
+          pod->address.as_u64[0] == address->as_u64[0] &&
+          pod->address.as_u64[1] == address->as_u64[1]) {
+        *pod_index = pod - kpm->pods;
+        return 0;
+      }
+  });
+  return -1;
+}
+
+int kp_vip_add_pods(u32 vip_index, ip46_address_t *addresses, u32 n)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_get_writer_lock();
+  kp_vip_t *vip;
+  if (!(vip = kp_vip_get_by_index(vip_index))) {
+    kp_put_writer_lock();
+    return VNET_API_ERROR_NO_SUCH_ENTRY;
+  }
+
+  ip46_type_t type = kp_vip_is_nat4(vip)?IP46_TYPE_IP4:IP46_TYPE_IP6;
+  u32 *to_be_added = 0;
+  u32 *to_be_updated = 0;
+  u32 i;
+  u32 *ip;
+  kp_snat_mapping_t *m;
+  kp_snat4_key_t m_key4;
+  clib_bihash_kv_8_8_t kv;
+
+  //Sanity check
+  while (n--) {
+
+    if (!kp_pod_find_index_vip(vip, &addresses[n], &i)) {
+      if (kpm->pods[i].flags & KP_POD_FLAGS_USED) {
+        vec_free(to_be_added);
+        vec_free(to_be_updated);
+        kp_put_writer_lock();
+        return VNET_API_ERROR_VALUE_EXIST;
+      }
+      vec_add1(to_be_updated, i);
+      goto next;
+    }
+
+    if (ip46_address_type(&addresses[n]) != type) {
+      vec_free(to_be_added);
+      vec_free(to_be_updated);
+      kp_put_writer_lock();
+      return VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
+    }
+
+    if (n) {
+      u32 n2 = n;
+      while(n2--) //Check for duplicates
+        if (addresses[n2].as_u64[0] == addresses[n].as_u64[0] &&
+            addresses[n2].as_u64[1] == addresses[n].as_u64[1])
+          goto next;
+    }
+
+    vec_add1(to_be_added, n);
+
+next:
+    continue;
+  }
+
+  //Update reused PODs
+  vec_foreach(ip, to_be_updated) {
+    kpm->pods[*ip].flags = KP_POD_FLAGS_USED;
+  }
+  vec_free(to_be_updated);
+
+  //Create those who have to be created
+  vec_foreach(ip, to_be_added) {
+    kp_pod_t *pod;
+    u32 *pod_index;
+    pool_get(kpm->pods, pod);
+    pod->address = addresses[*ip];
+    pod->flags = KP_POD_FLAGS_USED;
+    pod->vip_index = vip_index;
+    pool_get(vip->pod_indexes, pod_index);
+    *pod_index = pod - kpm->pods;
+
+    /*
+     * become a child of the FIB entry
+     * so we are informed when its forwarding changes
+     */
+    fib_prefix_t nh = {};
+    if (kp_vip_is_nat4(vip)) {
+	nh.fp_addr.ip4 = pod->address.ip4;
+	nh.fp_len = 32;
+	nh.fp_proto = FIB_PROTOCOL_IP4;
+    } else {
+	nh.fp_addr.ip6 = pod->address.ip6;
+	nh.fp_len = 128;
+	nh.fp_proto = FIB_PROTOCOL_IP6;
+    }
+
+    pod->next_hop_fib_entry_index =
+	fib_table_entry_special_add(0,
+				    &nh,
+				    FIB_SOURCE_RR,
+				    FIB_ENTRY_FLAG_NONE);
+    pod->next_hop_child_index =
+	fib_entry_child_add(pod->next_hop_fib_entry_index,
+			    kpm->fib_node_type,
+			    pod - kpm->pods);
+
+    kp_pod_stack(pod);
+
+    /* Add SNAT static mapping */
+    pool_get (kpm->snat_mappings, m);
+    memset (m, 0, sizeof (*m));
+    if (kp_vip_is_nat4(vip)) {
+	m_key4.addr = pod->address.ip4;
+	m_key4.port = vip->target_port;
+	m_key4.protocol = 0;
+	m_key4.fib_index = 0;
+
+        m->vip.ip4 = vip->prefix.ip4;;
+        m->node_ip.ip4.as_u32 = 0;
+        m->pod_ip.ip4 = pod->address.ip4;
+        m->vip_is_ipv6 = 0;
+        m->node_ip_is_ipv6 = 0;
+        m->pod_ip_is_ipv6 = 0;
+        m->port = vip->port;
+        m->node_port = vip->node_port;
+        m->target_port = vip->target_port;
+	m->vrf_id = 0;
+	m->fib_index = 0;
+
+	kv.key = m_key4.as_u64;
+	kv.value = m - kpm->snat_mappings;
+	clib_bihash_add_del_8_8(&kpm->mapping_by_pod, &kv, 1);
+    } else {
+	/* TBD */
+    }
+
+  }
+  vec_free(to_be_added);
+
+  //Recompute flows
+  kp_vip_update_new_flow_table(vip);
+
+  //Garbage collection maybe
+  kp_vip_garbage_collection(vip);
+
+  kp_put_writer_lock();
+  return 0;
+}
+
+int kp_vip_del_pods_withlock(u32 vip_index, ip46_address_t *addresses, u32 n)
+{
+  kp_main_t *kpm = &kp_main;
+  u32 now = (u32) vlib_time_now(vlib_get_main());
+  u32 *ip = 0;
+
+  kp_vip_t *vip;
+  if (!(vip = kp_vip_get_by_index(vip_index))) {
+    return VNET_API_ERROR_NO_SUCH_ENTRY;
+  }
+
+  u32 *indexes = NULL;
+  while (n--) {
+    u32 i;
+    if (kp_pod_find_index_vip(vip, &addresses[n], &i)) {
+      vec_free(indexes);
+      return VNET_API_ERROR_NO_SUCH_ENTRY;
+    }
+
+    if (n) { //Check for duplicates
+      u32 n2 = n - 1;
+      while(n2--) {
+        if (addresses[n2].as_u64[0] == addresses[n].as_u64[0] &&
+            addresses[n2].as_u64[1] == addresses[n].as_u64[1])
+          goto next;
+      }
+    }
+
+    vec_add1(indexes, i);
+next:
+  continue;
+  }
+
+  //Garbage collection maybe
+  kp_vip_garbage_collection(vip);
+
+  if (indexes != NULL) {
+    vec_foreach(ip, indexes) {
+      kpm->pods[*ip].flags &= ~KP_POD_FLAGS_USED;
+      kpm->pods[*ip].last_used = now;
+    }
+
+    //Recompute flows
+    kp_vip_update_new_flow_table(vip);
+  }
+
+  vec_free(indexes);
+  return 0;
+}
+
+int kp_vip_del_pods(u32 vip_index, ip46_address_t *addresses, u32 n)
+{
+  kp_get_writer_lock();
+  int ret = kp_vip_del_pods_withlock(vip_index, addresses, n);
+  kp_put_writer_lock();
+  return ret;
+}
+
+/**
+ * Add the VIP adjacency to the ip4 or ip6 fib
+ */
+static void kp_vip_add_adjacency(kp_main_t *kpm, kp_vip_t *vip)
+{
+  dpo_proto_t proto = 0;
+  dpo_id_t dpo = DPO_INVALID;
+  fib_prefix_t pfx = {};
+  if (kp_vip_is_ip4(vip)) {
+      pfx.fp_addr.ip4 = vip->prefix.ip4;
+      pfx.fp_len = vip->plen - 96;
+      pfx.fp_proto = FIB_PROTOCOL_IP4;
+      proto = DPO_PROTO_IP4;
+  } else {
+      pfx.fp_addr.ip6 = vip->prefix.ip6;
+      pfx.fp_len = vip->plen;
+      pfx.fp_proto = FIB_PROTOCOL_IP6;
+      proto = DPO_PROTO_IP6;
+  }
+  dpo_set(&dpo, kp_vip_is_nat4(vip)?kpm->dpo_nat4_type:kpm->dpo_nat6_type,
+      proto, vip - kpm->vips);
+  fib_table_entry_special_dpo_add(0,
+				  &pfx,
+				  FIB_SOURCE_PLUGIN_HI,
+				  FIB_ENTRY_FLAG_EXCLUSIVE,
+				  &dpo);
+  dpo_reset(&dpo);
+}
+
+/**
+ * Deletes the adjacency podsociated with the VIP
+ */
+static void kp_vip_del_adjacency(kp_main_t *kpm, kp_vip_t *vip)
+{
+  fib_prefix_t pfx = {};
+  if (kp_vip_is_ip4(vip)) {
+      pfx.fp_addr.ip4 = vip->prefix.ip4;
+      pfx.fp_len = vip->plen - 96;
+      pfx.fp_proto = FIB_PROTOCOL_IP4;
+  } else {
+      pfx.fp_addr.ip6 = vip->prefix.ip6;
+      pfx.fp_len = vip->plen;
+      pfx.fp_proto = FIB_PROTOCOL_IP6;
+  }
+  fib_table_entry_special_remove(0, &pfx, FIB_SOURCE_PLUGIN_HI);
+}
+
+int kp_vip_add(ip46_address_t *prefix, u8 plen, kp_vip_type_t type,
+	       u32 new_length, u32 *vip_index,
+	       u16 port, u16 target_port, u16 node_port)
+{
+  kp_main_t *kpm = &kp_main;
+  vlib_main_t *vm = kpm->vlib_main;
+  kp_vip_t *vip;
+  u32 key, *key_copy;
+  uword * entry;
+
+  kp_get_writer_lock();
+  ip46_prefix_normalize(prefix, plen);
+
+  if (!kp_vip_find_index_with_lock(prefix, plen, vip_index)) {
+    kp_put_writer_lock();
+    return VNET_API_ERROR_VALUE_EXIST;
+  }
+
+  if (!is_pow2(new_length)) {
+    kp_put_writer_lock();
+    return VNET_API_ERROR_INVALID_MEMORY_SIZE;
+  }
+
+  if (ip46_prefix_is_ip4(prefix, plen) &&
+      (type != KP_VIP_TYPE_IP4_NAT44) &&
+      (type != KP_VIP_TYPE_IP4_NAT46))
+    return VNET_API_ERROR_INVALID_ADDRESS_FAMILY;
+
+
+  //Allocate
+  pool_get(kpm->vips, vip);
+
+  //Init
+  vip->prefix = *prefix;
+  vip->plen = plen;
+  vip->port = clib_host_to_net_u16(port);
+  vip->target_port = clib_host_to_net_u16(target_port);
+  vip->node_port = clib_host_to_net_u16(node_port);
+  vip->last_garbage_collection = (u32) vlib_time_now(vlib_get_main());
+  vip->type = type;
+  vip->flags = KP_VIP_FLAGS_USED;
+  vip->pod_indexes = 0;
+
+  //Validate counters
+  u32 i;
+  for (i = 0; i < KP_N_VIP_COUNTERS; i++) {
+    vlib_validate_simple_counter(&kpm->vip_counters[i], vip - kpm->vips);
+    vlib_zero_simple_counter(&kpm->vip_counters[i], vip - kpm->vips);
+  }
+
+  //Configure new flow table
+  vip->new_flow_table_mask = new_length - 1;
+  vip->new_flow_table = 0;
+
+  //Create a new flow hash table full of the default entry
+  kp_vip_update_new_flow_table(vip);
+
+  //Create adjacency to direct traffic
+  kp_vip_add_adjacency(kpm, vip);
+
+  //Create maping from nodeport to vip_index
+  key = clib_host_to_net_u16(node_port);
+  entry = hash_get_mem (kpm->nodeport_by_key, &key);
+  if (entry)
+    return VNET_API_ERROR_VALUE_EXIST;
+
+  key_copy = clib_mem_alloc (sizeof (*key_copy));
+  clib_memcpy (key_copy, &key, sizeof (*key_copy));
+  hash_set_mem (kpm->nodeport_by_key, key_copy, vip - kpm->vips);
+
+  /* receive packets destined to NodeIP:NodePort */
+  udp_register_dst_port (vm, node_port, kp4_nodeport_node.index, 1);
+  udp_register_dst_port (vm, node_port, kp6_nodeport_node.index, 0);
+
+  //Return result
+  *vip_index = vip - kpm->vips;
+
+  kp_put_writer_lock();
+  return 0;
+}
+
+int kp_vip_del(u32 vip_index)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_vip_t *vip;
+  kp_get_writer_lock();
+  if (!(vip = kp_vip_get_by_index(vip_index))) {
+    kp_put_writer_lock();
+    return VNET_API_ERROR_NO_SUCH_ENTRY;
+  }
+
+  //FIXME: This operation is actually not working
+  //We will need to remove state before performing this.
+
+  {
+    //Remove all PODs
+    ip46_address_t *pods = 0;
+    kp_pod_t *pod;
+    u32 *pod_index;
+    pool_foreach(pod_index, vip->pod_indexes, {
+        pod = &kpm->pods[*pod_index];
+        vec_add1(pods, pod->address);
+    });
+    if (vec_len(pods))
+      kp_vip_del_pods_withlock(vip_index, pods, vec_len(pods));
+    vec_free(pods);
+  }
+
+  //Delete adjacency
+  kp_vip_del_adjacency(kpm, vip);
+
+  //Set the VIP pod unused
+  vip->flags &= ~KP_VIP_FLAGS_USED;
+
+  kp_put_writer_lock();
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_PLUGIN_REGISTER () = {
+    .version = VPP_BUILD_VER,
+    .description = "kube-proxy data plane",
+};
+/* *INDENT-ON* */
+
+u8 *format_kp_dpo (u8 * s, va_list * va)
+{
+  index_t index = va_arg (*va, index_t);
+  CLIB_UNUSED(u32 indent) = va_arg (*va, u32);
+  kp_main_t *kpm = &kp_main;
+  kp_vip_t *vip = pool_elt_at_index (kpm->vips, index);
+  return format (s, "%U", format_kp_vip, vip);
+}
+
+static void kp_dpo_lock (dpo_id_t *dpo) {}
+static void kp_dpo_unlock (dpo_id_t *dpo) {}
+
+static fib_node_t *
+kp_fib_node_get_node (fib_node_index_t index)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_pod_t *pod = pool_elt_at_index (kpm->pods, index);
+  return (&pod->fib_node);
+}
+
+static void
+kp_fib_node_last_lock_gone (fib_node_t *node)
+{
+}
+
+static kp_pod_t *
+kp_pod_from_fib_node (fib_node_t *node)
+{
+  return ((kp_pod_t*)(((char*)node) -
+      STRUCT_OFFSET_OF(kp_pod_t, fib_node)));
+}
+
+static void
+kp_pod_stack (kp_pod_t *pod)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_vip_t *vip = &kpm->vips[pod->vip_index];
+  dpo_stack(kp_vip_is_nat4(vip)?kpm->dpo_nat4_type:kpm->dpo_nat6_type,
+	    kp_vip_is_ip4(vip)?DPO_PROTO_IP4:DPO_PROTO_IP6,
+	    &pod->dpo,
+	    fib_entry_contribute_ip_forwarding(
+		pod->next_hop_fib_entry_index));
+}
+
+static fib_node_back_walk_rc_t
+kp_fib_node_back_walk_notify (fib_node_t *node,
+			       fib_node_back_walk_ctx_t *ctx)
+{
+    kp_pod_stack(kp_pod_from_fib_node(node));
+    return (FIB_NODE_BACK_WALK_CONTINUE);
+}
+
+int kp_nat4_interface_add_del (u32 sw_if_index, int is_del)
+{
+  if (is_del)
+    {
+      vnet_feature_enable_disable ("ip4-unicast", "kp-nat4-in2out",
+                                   sw_if_index, 0, 0, 0);
+    }
+  else
+    {
+      vnet_feature_enable_disable ("ip4-unicast", "kp-nat4-in2out",
+                                   sw_if_index, 1, 0, 0);
+    }
+
+  return 0;
+}
+
+clib_error_t *
+kp_init (vlib_main_t * vm)
+{
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
+  kp_main_t *kpm = &kp_main;
+  kpm->vnet_main = vnet_get_main ();
+  kpm->vlib_main = vm;
+
+  kp_pod_t *default_pod;
+  fib_node_vft_t kp_fib_node_vft = {
+      .fnv_get = kp_fib_node_get_node,
+      .fnv_last_lock = kp_fib_node_last_lock_gone,
+      .fnv_back_walk = kp_fib_node_back_walk_notify,
+  };
+  dpo_vft_t kp_vft = {
+      .dv_lock = kp_dpo_lock,
+      .dv_unlock = kp_dpo_unlock,
+      .dv_format = format_kp_dpo,
+  };
+
+  kpm->vips = 0;
+  kpm->per_cpu = 0;
+  vec_validate(kpm->per_cpu, tm->n_vlib_mains - 1);
+  kpm->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,  CLIB_CACHE_LINE_BYTES);
+  kpm->writer_lock[0] = 0;
+  kpm->per_cpu_sticky_buckets = KP_DEFAULT_PER_CPU_STICKY_BUCKETS;
+  kpm->flow_timeout = KP_DEFAULT_FLOW_TIMEOUT;
+  kpm->dpo_nat4_type = dpo_register_new_type(&kp_vft, kp_dpo_nat4_nodes);
+  kpm->dpo_nat6_type = dpo_register_new_type(&kp_vft, kp_dpo_nat6_nodes);
+  kpm->fib_node_type = fib_node_register_new_type(&kp_fib_node_vft);
+
+  //Init POD reference counters
+  vlib_refcount_init(&kpm->pod_refcount);
+
+  //Allocate and init default POD.
+  kpm->pods = 0;
+  pool_get(kpm->pods, default_pod);
+  default_pod->flags = 0;
+  default_pod->dpo.dpoi_next_node = KP_NEXT_DROP;
+  default_pod->vip_index = ~0;
+  default_pod->address.ip6.as_u64[0] = 0xffffffffffffffffL;
+  default_pod->address.ip6.as_u64[1] = 0xffffffffffffffffL;
+
+  kpm->nodeport_by_key
+    = hash_create_mem (0, sizeof(u16), sizeof (uword));
+
+  clib_bihash_init_8_8 (&kpm->mapping_by_pod,
+                        "mapping_by_pod", KP_MAPPING_BUCKETS,
+			KP_MAPPING_MEMORY_SIZE);
+
+#define _(a,b,c) kpm->vip_counters[c].name = b;
+  kp_foreach_vip_counter
+#undef _
+  return NULL;
+}
+
+VLIB_INIT_FUNCTION (kp_init);
diff --git a/src/plugins/kubeproxy/kp.h b/src/plugins/kubeproxy/kp.h
new file mode 100644
index 00000000000..243c002833f
--- /dev/null
+++ b/src/plugins/kubeproxy/kp.h
@@ -0,0 +1,473 @@
+/*
+ * Copyright (c) 2017 Intel 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 "POD IS" BPODIS,
+ * 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.
+ */
+
+/**
+ * kp-plugin implements a MagLev-like load balancer.
+ * http://research.google.com/pubs/pub44824.html
+ *
+ * It hasn't been tested for interoperability with the original MagLev
+ * but intends to provide similar functionality.
+ * The kube-proxy receives traffic destined to VIP (Virtual IP)
+ * addresses from one or multiple(ECMP) routers.
+ * The kube-proxy tunnels the traffic toward many application servers
+ * ensuring session stickyness (i.e. that a single sessions is tunneled
+ * towards a single application server).
+ *
+ */
+
+#ifndef KP_PLUGIN_KP_KP_H_
+#define KP_PLUGIN_KP_KP_H_
+
+#include <vnet/util/refcount.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/dpo/dpo.h>
+#include <vnet/fib/fib_table.h>
+#include <vppinfra/bihash_8_8.h>
+
+#include <kubeproxy/kphash.h>
+
+#define KP_DEFAULT_PER_CPU_STICKY_BUCKETS 1 << 10
+#define KP_DEFAULT_FLOW_TIMEOUT 40
+#define KP_MAPPING_BUCKETS  1024
+#define KP_MAPPING_MEMORY_SIZE  64<<20
+
+typedef enum {
+  KP_NEXT_DROP,
+  KP_N_NEXT,
+} kp_next_t;
+
+typedef enum {
+  KP_NAT4_IN2OUT_NEXT_DROP,
+  KP_NAT4_IN2OUT_NEXT_LOOKUP,
+  KP_NAT4_IN2OUT_N_NEXT,
+} kp_nat4_in2out_next_t;
+
+#define foreach_kp_nat_in2out_error                       \
+_(UNSUPPORTED_PROTOCOL, "Unsupported protocol")         \
+_(IN2OUT_PACKETS, "Good in2out packets processed")      \
+_(NO_TRANSLATION, "No translation")
+
+typedef enum {
+#define _(sym,str) KP_NAT_IN2OUT_ERROR_##sym,
+  foreach_kp_nat_in2out_error
+#undef _
+  KP_NAT_IN2OUT_N_ERROR,
+} kp_nat_in2out_error_t;
+
+/**
+ * kube-proxy supports three types of service
+ */
+typedef enum {
+  KP_SVR_TYPE_VIP_PORT,
+  KP_SVR_TYPE_NODEIP_PORT,
+  KP_SVR_TYPE_EXT_LB,
+  KP_SVR_N_TYPES,
+} kp_svr_type_t;
+
+typedef enum {
+  KP_NODEPORT_NEXT_IP4_NAT4,
+  KP_NODEPORT_NEXT_IP4_NAT6,
+  KP_NODEPORT_NEXT_IP6_NAT4,
+  KP_NODEPORT_NEXT_IP6_NAT6,
+  KP_NODEPORT_NEXT_DROP,
+  KP_NODEPORT_N_NEXT,
+} kp_nodeport_next_t;
+
+/**
+ * Each VIP is configured with a set of PODs
+ */
+typedef struct {
+  /**
+   * Registration to FIB event.
+   */
+  fib_node_t fib_node;
+
+  /**
+   * Destination address used to transfer traffic towards to that POD.
+   * The address is also used pod ID and pseudo-random
+   * seed for the load-balancing process.
+   */
+  ip46_address_t address;
+
+  /**
+   * PODs are indexed by address and VIP Index.
+   * Which means there will be duplicated if the same server
+   * address is used for multiple VIPs.
+   */
+  u32 vip_index;
+
+  /**
+   * Some per-POD flags.
+   * For now only KP_POD_FLAGS_USED is defined.
+   */
+  u8 flags;
+
+#define KP_POD_FLAGS_USED 0x1
+
+  /**
+   * Rotating timestamp of when KP_POD_FLAGS_USED flag was last set.
+   *
+   * POD removal is based on garbage collection and reference counting.
+   * When an POD is removed, there is a race between configuration core
+   * and worker cores which may still add a reference while it should not
+   * be used. This timestamp is used to not remove the POD while a race condition
+   * may happen.
+   */
+  u32 last_used;
+
+  /**
+   * The FIB entry index for the next-hop
+   */
+  fib_node_index_t next_hop_fib_entry_index;
+
+  /**
+   * The child index on the FIB entry
+   */
+  u32 next_hop_child_index;
+
+  /**
+   * The next DPO in the graph to follow.
+   */
+  dpo_id_t dpo;
+
+} kp_pod_t;
+
+format_function_t format_kp_pod;
+
+typedef struct {
+  u32 pod_index;
+} kp_new_flow_entry_t;
+
+#define kp_foreach_vip_counter \
+ _(NEXT_PACKET, "packet from existing sessions", 0) \
+ _(FIRST_PACKET, "first session packet", 1) \
+ _(UNTRACKED_PACKET, "untracked packet", 2) \
+ _(NO_SERVER, "no server configured", 3)
+
+typedef enum {
+#define _(a,b,c) KP_VIP_COUNTER_##a = c,
+  kp_foreach_vip_counter
+#undef _
+  KP_N_VIP_COUNTERS
+} kp_vip_counter_t;
+
+/**
+ * kube-proxy supports IPv4 and IPv6 traffic
+ * and NAT4 and NAT6.
+ */
+typedef enum {
+  KP_VIP_TYPE_IP4_NAT44,
+  KP_VIP_TYPE_IP4_NAT46,
+  KP_VIP_TYPE_IP6_NAT64,
+  KP_VIP_TYPE_IP6_NAT66,
+  KP_VIP_N_TYPES,
+} kp_vip_type_t;
+
+format_function_t format_kp_vip_type;
+unformat_function_t unformat_kp_vip_type;
+
+/**
+ * Load balancing service is provided per VIP.
+ * In this data model, a VIP can be a whole prefix.
+ * But load balancing only
+ * occurs on a per-source-address/port basis. Meaning that if a given source
+ * reuses the same port for multiple destinations within the same VIP,
+ * they will be considered as a single flow.
+ */
+typedef struct {
+
+  //Runtime
+
+  /**
+   * Vector mapping (flow-hash & new_connect_table_mask) to POD index.
+   * This is used for new flows.
+   */
+  kp_new_flow_entry_t *new_flow_table;
+
+  /**
+   * New flows table length - 1
+   * (length MUST be a power of 2)
+   */
+  u32 new_flow_table_mask;
+
+  /**
+   * last time garbage collection was run to free the PODs.
+   */
+  u32 last_garbage_collection;
+
+  //Not runtime
+
+  /**
+   * A Virtual IP represents a given service delivered
+   * by a set of PODs. It can be a single
+   * address or a prefix.
+   * IPv4 prefixes are encoded using IPv4-in-IPv6 embedded address
+   * (i.e. ::/96 prefix).
+   */
+  ip46_address_t prefix;
+
+  /**
+   * The VIP prefix length.
+   * In case of IPv4, plen = 96 + ip4_plen.
+   */
+  u8 plen;
+
+  /**
+   * Service port. network byte order
+   */
+  u16 port;
+
+  /**
+   * Pod's port corresponding to specific service. network byte order
+   */
+  u16 target_port;
+
+  /**
+   * Node's port, can access service via NodeIP:node_port. network byte order
+   */
+  u16 node_port;
+
+
+  /**
+   * The type of traffic for this.
+   * KP_TYPE_UNDEFINED if unknown.
+   */
+  kp_vip_type_t type;
+
+  /**
+   * Flags related to this VIP.
+   * KP_VIP_FLAGS_USED means the VIP is active.
+   * When it is not set, the VIP in the process of being removed.
+   * We cannot immediately remove a VIP because the VIP index still may be stored
+   * in the adjacency index.
+   */
+  u8 flags;
+#define KP_VIP_FLAGS_USED 0x1
+
+  /**
+   * Pool of POD indexes used for this VIP.
+   * This also includes PODs that have been removed (but are still referenced).
+   */
+  u32 *pod_indexes;
+
+} kp_vip_t;
+
+/*
+ * mapping from nodeport to vip_index
+ */
+typedef struct {
+
+  u32 vip_index;
+
+} kp_nodeport_t;
+
+#define kp_vip_is_ip4(vip) ((vip)->type == KP_VIP_TYPE_IP4_NAT44 \
+                            || (vip)->type == KP_VIP_TYPE_IP4_NAT46)
+#define kp_vip_is_nat4(vip) ((vip)->type == KP_VIP_TYPE_IP6_NAT64 \
+                            || (vip)->type == KP_VIP_TYPE_IP4_NAT44)
+format_function_t format_kp_vip;
+format_function_t format_kp_vip_detailed;
+
+#define foreach_kp_nat_protocol \
+  _(UDP, 0, udp, "udp")       \
+  _(TCP, 1, tcp, "tcp")
+
+typedef enum {
+#define _(N, i, n, s) KP_NAT_PROTOCOL_##N = i,
+  foreach_kp_nat_protocol
+#undef _
+} kp_nat_protocol_t;
+
+always_inline u32
+kp_ip_proto_to_nat_proto (u8 ip_proto)
+{
+  u32 nat_proto = ~0;
+
+  nat_proto = (ip_proto == IP_PROTOCOL_UDP) ? KP_NAT_PROTOCOL_UDP : nat_proto;
+  nat_proto = (ip_proto == IP_PROTOCOL_TCP) ? KP_NAT_PROTOCOL_TCP : nat_proto;
+
+  return nat_proto;
+}
+
+/* Key for Pod's egress SNAT */
+typedef struct {
+  union
+  {
+    struct
+    {
+      ip4_address_t addr;
+      u16 port;
+      u16 protocol:3,
+        fib_index:13;
+    };
+    u64 as_u64;
+  };
+} kp_snat4_key_t;
+
+typedef struct
+{
+  ip6_address_t prefix;
+  u8 plen;
+  u32 vrf_id;
+  u32 fib_index;
+} kp_snat6_key_t;
+
+typedef struct {
+  kp_svr_type_t svr_type;
+  ip46_address_t vip;
+  ip46_address_t node_ip;
+  ip46_address_t pod_ip;
+  u8 vip_is_ipv6;
+  u8 node_ip_is_ipv6;
+  u8 pod_ip_is_ipv6;
+  u16 port;        /* Network byte order */
+  u16 node_port;   /* Network byte order */
+  u16 target_port; /* Network byte order */
+  u32 vrf_id;
+  u32 fib_index;
+} kp_snat_mapping_t;
+
+typedef struct {
+  /**
+   * Each CPU has its own sticky flow hash table.
+   * One single table is used for all VIPs.
+   */
+  kp_hash_t *sticky_ht;
+
+} kp_per_cpu_t;
+
+typedef struct {
+  /**
+   * Pool of all Virtual IPs
+   */
+  kp_vip_t *vips;
+
+  /**
+   * Pool of PODs.
+   * PODs are referenced by address and vip index.
+   * The first element (index 0) is special and used only to fill
+   * new_flow_tables when no POD has been configured.
+   */
+  kp_pod_t *pods;
+
+  /**
+   * Each POD has an associated reference counter.
+   * As pods[0] has a special meaning, its associated counter
+   * starts at 0 and is decremented instead. i.e. do not use it.
+   */
+  vlib_refcount_t pod_refcount;
+
+  /* hash lookup vip_index by key: {u16: nodeport} */
+  uword * nodeport_by_key;
+
+
+  /**
+   * Some global data is per-cpu
+   */
+  kp_per_cpu_t *per_cpu;
+
+  /**
+   * Node next index for IP adjacencies, for each of the traffic types.
+   */
+  u32 ip_lookup_next_index[KP_VIP_N_TYPES];
+
+  /**
+   * Number of buckets in the per-cpu sticky hash table.
+   */
+  u32 per_cpu_sticky_buckets;
+
+  /**
+   * Flow timeout in seconds.
+   */
+  u32 flow_timeout;
+
+  /**
+   * Per VIP counter
+   */
+  vlib_simple_counter_main_t vip_counters[KP_N_VIP_COUNTERS];
+
+  /**
+   * DPO used to send packet from IP4/6 lookup to KP node.
+   */
+  dpo_type_t dpo_nat4_type;
+  dpo_type_t dpo_nat6_type;
+
+  /**
+   * Node type for registering to fib changes.
+   */
+  fib_node_type_t fib_node_type;
+
+  /* Find a static mapping by pod IP : target_port */
+  clib_bihash_8_8_t mapping_by_pod;
+
+  /* Static mapping pool */
+  kp_snat_mapping_t * snat_mappings;
+
+  /**
+   * API dynamically registered base ID.
+   */
+  u16 msg_id_base;
+
+  volatile u32 *writer_lock;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+} kp_main_t;
+
+#define ip46_address_type(ip46) (ip46_address_is_ip4(ip46)?IP46_TYPE_IP4:IP46_TYPE_IP6)
+#define ip46_prefix_is_ip4(ip46, len) ((len) >= 96 && ip46_address_is_ip4(ip46))
+#define ip46_prefix_type(ip46, len) (ip46_prefix_is_ip4(ip46, len)?IP46_TYPE_IP4:IP46_TYPE_IP6)
+
+void ip46_prefix_normalize(ip46_address_t *prefix, u8 plen);
+uword unformat_ip46_prefix (unformat_input_t * input, va_list * args);
+u8 *format_ip46_prefix (u8 * s, va_list * args);
+
+
+extern kp_main_t kp_main;
+extern vlib_node_registration_t kp4_node;
+extern vlib_node_registration_t kp6_node;
+extern vlib_node_registration_t kp4_nodeport_node;
+extern vlib_node_registration_t kp6_nodeport_node;
+extern vlib_node_registration_t kp_nat4_in2out_node;
+
+/**
+ * Fix global kube-proxy parameters.
+ * @return 0 on success. VNET_KP_ERR_XXX on error
+ */
+int kp_conf(u32 sticky_buckets, u32 flow_timeout);
+
+int kp_vip_add(ip46_address_t *prefix, u8 plen, kp_vip_type_t type,
+	       u32 new_length, u32 *vip_index,
+	       u16 port, u16 target_port, u16 node_port);
+int kp_vip_del(u32 vip_index);
+
+int kp_vip_find_index(ip46_address_t *prefix, u8 plen, u32 *vip_index);
+
+#define kp_vip_get_by_index(index) (pool_is_free_index(kp_main.vips, index)?NULL:pool_elt_at_index(kp_main.vips, index))
+
+int kp_vip_add_pods(u32 vip_index, ip46_address_t *addresses, u32 n);
+int kp_vip_del_pods(u32 vip_index, ip46_address_t *addresses, u32 n);
+
+u32 kp_hash_time_now(vlib_main_t * vm);
+
+void kp_garbage_collection();
+
+int kp_nat4_interface_add_del (u32 sw_if_index, int is_del);
+
+format_function_t format_kp_main;
+
+#endif /* KP_PLUGIN_KP_KP_H_ */
diff --git a/src/plugins/kubeproxy/kp_api.c b/src/plugins/kubeproxy/kp_api.c
new file mode 100644
index 00000000000..56b247a395e
--- /dev/null
+++ b/src/plugins/kubeproxy/kp_api.c
@@ -0,0 +1,249 @@
+/*
+ * Copyright (c) 2016 Intel 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 "POD IS" BPODIS,
+ * 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 <kubeproxy/kp.h>
+
+#include <vppinfra/byte_order.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+#define vl_msg_id(n,h) n,
+typedef enum {
+#include <kubeproxy/kp.api.h>
+    /* We'll want to know how many messages IDs we need... */
+    VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+
+/* define message structures */
+#define vl_typedefs
+#include <kubeproxy/kp.api.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <kubeproxy/kp.api.h>
+#undef vl_endianfun
+
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <kubeproxy/kp.api.h>
+#undef vl_api_version
+
+#define vl_msg_name_crc_list
+#include <kubeproxy/kp.api.h>
+#undef vl_msg_name_crc_list
+
+
+#define REPLY_MSG_ID_BASE kpm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+setup_message_id_table (kp_main_t * kpm, api_main_t * am)
+{
+#define _(id,n,crc) \
+  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + kpm->msg_id_base);
+  foreach_vl_msg_name_crc_kp;
+#undef _
+}
+
+/* Macro to finish up custom dump fns */
+#define FINISH                                  \
+    vec_add1 (s, 0);                            \
+    vl_print (handle, (char *)s);               \
+    vec_free (s);                               \
+    return handle;
+
+static void
+vl_api_kp_conf_t_handler
+(vl_api_kp_conf_t * mp)
+{
+  kp_main_t *kpm = &kp_main;
+  vl_api_kp_conf_reply_t * rmp;
+  int rv = 0;
+
+  rv = kp_conf(mp->sticky_buckets_per_core,
+               mp->flow_timeout);
+
+ REPLY_MACRO (VL_API_KP_CONF_REPLY);
+}
+
+static void *vl_api_kp_conf_t_print
+(vl_api_kp_conf_t *mp, void * handle)
+{
+  u8 * s;
+  s = format (0, "SCRIPT: kp_conf ");
+  s = format (s, "%u ", mp->sticky_buckets_per_core);
+  s = format (s, "%u ", mp->flow_timeout);
+  FINISH;
+}
+
+
+static void
+vl_api_kp_add_del_vip_t_handler
+(vl_api_kp_add_del_vip_t * mp)
+{
+  kp_main_t *kpm = &kp_main;
+  vl_api_kp_conf_reply_t * rmp;
+  int rv = 0;
+  ip46_address_t prefix;
+  u8 prefix_length = mp->prefix_length;
+
+  if (mp->is_ipv6 == 0)
+    {
+      prefix_length += 96;
+      memcpy(&prefix.ip4, mp->ip_prefix, sizeof(prefix.ip4));
+      prefix.pad[0] = prefix.pad[1] = prefix.pad[2] = 0;
+    }
+  else
+    {
+      memcpy(&prefix.ip6, mp->ip_prefix, sizeof(prefix.ip6));
+    }
+
+  if (mp->is_del) {
+    u32 vip_index;
+    if (!(rv = kp_vip_find_index(&prefix, prefix_length, &vip_index)))
+      rv = kp_vip_del(vip_index);
+  } else {
+    u32 vip_index;
+    kp_vip_type_t type;
+    if (mp->is_ipv6 == 0) {
+      type = mp->is_nat4?KP_VIP_TYPE_IP4_NAT44:KP_VIP_TYPE_IP4_NAT46;
+    } else {
+      type = mp->is_nat4?KP_VIP_TYPE_IP6_NAT64:KP_VIP_TYPE_IP6_NAT66;
+    }
+
+    rv = kp_vip_add(&prefix, prefix_length, type,
+		    ntohl(mp->new_flows_table_length), &vip_index,
+		    ntohs(mp->port), ntohs(mp->target_port),
+		    ntohs(mp->node_port));
+  }
+ REPLY_MACRO (VL_API_KP_CONF_REPLY);
+}
+
+static void *vl_api_kp_add_del_vip_t_print
+(vl_api_kp_add_del_vip_t *mp, void * handle)
+{
+  u8 * s;
+  s = format (0, "SCRIPT: kp_add_del_vip ");
+  s = format (s, "%U ", format_ip46_prefix,
+              (ip46_address_t *)mp->ip_prefix, mp->prefix_length, IP46_TYPE_ANY);
+  s = format (s, "port %u ", mp->port);
+  s = format (s, "target_port %u ", mp->target_port);
+  s = format (s, "node_port %u ", mp->node_port);
+  s = format (s, "%s ", mp->is_nat4?"nat4":"nat6");
+  s = format (s, "%u ", mp->new_flows_table_length);
+  s = format (s, "%s ", mp->is_del?"del":"add");
+  FINISH;
+}
+
+static void
+vl_api_kp_add_del_pod_t_handler
+(vl_api_kp_add_del_pod_t * mp)
+{
+  kp_main_t *kpm = &kp_main;
+  vl_api_kp_conf_reply_t * rmp;
+  int rv = 0;
+  u32 vip_index;
+
+  ip46_address_t vip_ip_prefix;
+  u8 vip_prefix_length = mp->vip_prefix_length;
+
+  if (mp->vip_is_ipv6 == 0)
+    {
+      vip_prefix_length += 96;
+      memcpy(&vip_ip_prefix.ip4, mp->vip_ip_prefix,
+	     sizeof(vip_ip_prefix.ip4));
+      vip_ip_prefix.pad[0] = vip_ip_prefix.pad[1] = vip_ip_prefix.pad[2] = 0;
+    }
+  else
+    {
+      memcpy(&vip_ip_prefix.ip6, mp->vip_ip_prefix,
+	     sizeof(vip_ip_prefix.ip6));
+    }
+
+  ip46_address_t pod_address;
+
+  if (mp->pod_is_ipv6 == 0)
+    {
+      memcpy(&pod_address.ip4, mp->pod_address,
+	     sizeof(pod_address.ip4));
+      pod_address.pad[0] = pod_address.pad[1] = pod_address.pad[2] = 0;
+    }
+  else
+    {
+      memcpy(&pod_address.ip6, mp->pod_address,
+	     sizeof(pod_address.ip6));
+    }
+
+  if ((rv = kp_vip_find_index(&vip_ip_prefix, vip_prefix_length, &vip_index)))
+    goto done;
+
+  if (mp->is_del)
+    rv = kp_vip_del_pods(vip_index, &pod_address, 1);
+  else
+    rv = kp_vip_add_pods(vip_index, &pod_address, 1);
+
+done:
+ REPLY_MACRO (VL_API_KP_CONF_REPLY);
+}
+
+static void *vl_api_kp_add_del_pod_t_print
+(vl_api_kp_add_del_pod_t *mp, void * handle)
+{
+  u8 * s;
+  s = format (0, "SCRIPT: kp_add_del_pod ");
+  s = format (s, "%U ", format_ip46_prefix,
+              (ip46_address_t *)mp->vip_ip_prefix, mp->vip_prefix_length, IP46_TYPE_ANY);
+  s = format (s, "%U ", format_ip46_address,
+                (ip46_address_t *)mp->pod_address, IP46_TYPE_ANY);
+  s = format (s, "%s ", mp->is_del?"del":"add");
+  FINISH;
+}
+
+/* List of message types that this plugin understands */
+#define foreach_kp_plugin_api_msg            \
+_(KP_CONF, kp_conf)                          \
+_(KP_ADD_DEL_VIP, kp_add_del_vip)            \
+_(KP_ADD_DEL_POD, kp_add_del_pod)
+
+static clib_error_t * kp_api_init (vlib_main_t * vm)
+{
+  kp_main_t *kpm = &kp_main;
+  u8 *name = format (0, "kp_%08x%c", api_version, 0);
+  kpm->msg_id_base = vl_msg_api_get_msg_ids
+      ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers((VL_API_##N + kpm->msg_id_base),     \
+                           #n,                  \
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_kp_plugin_api_msg;
+#undef _
+
+  /* Add our API messages to the global name_crc hash table */
+  setup_message_id_table (kpm, &api_main);
+
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (kp_api_init);
diff --git a/src/plugins/kubeproxy/kp_cli.c b/src/plugins/kubeproxy/kp_cli.c
new file mode 100644
index 00000000000..6a18834274e
--- /dev/null
+++ b/src/plugins/kubeproxy/kp_cli.c
@@ -0,0 +1,347 @@
+/*
+ * Copyright (c) 2016 Intel 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 "POD IS" BPODIS,
+ * 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 <kubeproxy/kp.h>
+
+
+static clib_error_t *
+kp_vip_command_fn (vlib_main_t * vm,
+              unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  ip46_address_t prefix;
+  u8 plen;
+  u32 new_len = 1024;
+  u32 port = 0;
+  u32 target_port = 0;
+  u32 node_port = 0;
+  u32 del = 0;
+  int ret;
+  u32 nat4 = 0;
+  kp_vip_type_t type;
+  clib_error_t *error = 0;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  if (!unformat(line_input, "%U", unformat_ip46_prefix, &prefix, &plen, IP46_TYPE_ANY, &plen)) {
+    error = clib_error_return (0, "invalid vip prefix: '%U'",
+                               format_unformat_error, line_input);
+    goto done;
+  }
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+  {
+    if (unformat(line_input, "new_len %d", &new_len))
+      ;
+    else if (unformat(line_input, "port %d", &port))
+      ;
+    else if (unformat(line_input, "target_port %d", &target_port))
+      ;
+    else if (unformat(line_input, "node_port %d", &node_port))
+      ;
+    else if (unformat(line_input, "del"))
+      del = 1;
+    else if (unformat(line_input, "nat4"))
+      nat4 = 1;
+    else if (unformat(line_input, "nat6"))
+      nat4 = 0;
+    else {
+      error = clib_error_return (0, "parse error: '%U'",
+                                format_unformat_error, line_input);
+      goto done;
+    }
+  }
+
+
+  if (ip46_prefix_is_ip4(&prefix, plen)) {
+    type = (nat4)?KP_VIP_TYPE_IP4_NAT44:KP_VIP_TYPE_IP4_NAT46;
+  } else {
+    type = (nat4)?KP_VIP_TYPE_IP6_NAT64:KP_VIP_TYPE_IP6_NAT66;
+  }
+
+  kp_garbage_collection();
+
+  u32 index;
+  if (!del) {
+    if ((ret = kp_vip_add(&prefix, plen, type, new_len, &index,
+			  (u16)port, (u16)target_port, (u16)node_port))) {
+      error = clib_error_return (0, "kp_vip_add error %d", ret);
+      goto done;
+    } else {
+      vlib_cli_output(vm, "kp_vip_add ok %d", index);
+    }
+  } else {
+    if ((ret = kp_vip_find_index(&prefix, plen, &index))) {
+      error = clib_error_return (0, "kp_vip_find_index error %d", ret);
+      goto done;
+    } else if ((ret = kp_vip_del(index))) {
+      error = clib_error_return (0, "kp_vip_del error %d", ret);
+      goto done;
+    }
+  }
+
+done:
+  unformat_free (line_input);
+
+  return error;
+}
+
+VLIB_CLI_COMMAND (kp_vip_command, static) =
+{
+  .path = "kube-proxy vip",
+  .short_help = "kube-proxy vip <prefix> port <n> target_port <n>"
+                " node_port <n> [nat4|nat6)] [new_len <n>] [del]",
+  .function = kp_vip_command_fn,
+};
+
+static clib_error_t *
+kp_pod_command_fn (vlib_main_t * vm,
+              unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  ip46_address_t vip_prefix, pod_addr;
+  u8 vip_plen;
+  ip46_address_t *pod_array = 0;
+  u32 vip_index;
+  u8 del = 0;
+  int ret;
+  clib_error_t *error = 0;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  if (!unformat(line_input, "%U", unformat_ip46_prefix, &vip_prefix, &vip_plen, IP46_TYPE_ANY)) {
+    error = clib_error_return (0, "invalid pod address: '%U'",
+                               format_unformat_error, line_input);
+    goto done;
+  }
+
+  if ((ret = kp_vip_find_index(&vip_prefix, vip_plen, &vip_index))) {
+    error = clib_error_return (0, "kp_vip_find_index error %d", ret);
+    goto done;
+  }
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+  {
+    if (unformat(line_input, "%U", unformat_ip46_address, &pod_addr, IP46_TYPE_ANY)) {
+      vec_add1(pod_array, pod_addr);
+    } else if (unformat(line_input, "del")) {
+      del = 1;
+    } else {
+      error = clib_error_return (0, "parse error: '%U'",
+                                 format_unformat_error, line_input);
+      goto done;
+    }
+  }
+
+  if (!vec_len(pod_array)) {
+    error = clib_error_return (0, "No POD address provided");
+    goto done;
+  }
+
+  kp_garbage_collection();
+  clib_warning("vip index is %d", vip_index);
+
+  if (del) {
+    if ((ret = kp_vip_del_pods(vip_index, pod_array, vec_len(pod_array)))) {
+      error = clib_error_return (0, "kp_vip_del_pods error %d", ret);
+      goto done;
+    }
+  } else {
+    if ((ret = kp_vip_add_pods(vip_index, pod_array, vec_len(pod_array)))) {
+      error = clib_error_return (0, "kp_vip_add_pods error %d", ret);
+      goto done;
+    }
+  }
+
+done:
+  unformat_free (line_input);
+  vec_free(pod_array);
+
+  return error;
+}
+
+VLIB_CLI_COMMAND (kp_pod_command, static) =
+{
+  .path = "kube-proxy pod",
+  .short_help =
+      "kube-proxy pod <vip-prefix> [<address> [<address> [...]]] [del]",
+  .function = kp_pod_command_fn,
+};
+
+static clib_error_t *
+kp_conf_command_fn (vlib_main_t * vm,
+              unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  kp_main_t *kpm = &kp_main;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u32 per_cpu_sticky_buckets = kpm->per_cpu_sticky_buckets;
+  u32 per_cpu_sticky_buckets_log2 = 0;
+  u32 flow_timeout = kpm->flow_timeout;
+  int ret;
+  clib_error_t *error = 0;
+
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+  {
+    if (unformat(line_input, "buckets %d", &per_cpu_sticky_buckets))
+      ;
+    else if (unformat(line_input, "buckets-log2 %d", &per_cpu_sticky_buckets_log2)) {
+      if (per_cpu_sticky_buckets_log2 >= 32)
+        return clib_error_return (0, "buckets-log2 value is too high");
+      per_cpu_sticky_buckets = 1 << per_cpu_sticky_buckets_log2;
+    } else if (unformat(line_input, "timeout %d", &flow_timeout))
+      ;
+    else {
+      error = clib_error_return (0, "parse error: '%U'",
+                                 format_unformat_error, line_input);
+      goto done;
+    }
+  }
+
+  kp_garbage_collection();
+
+  if ((ret = kp_conf(per_cpu_sticky_buckets, flow_timeout))) {
+    error = clib_error_return (0, "kp_conf error %d", ret);
+    goto done;
+  }
+
+done:
+  unformat_free (line_input);
+
+  return error;
+}
+
+VLIB_CLI_COMMAND (kp_conf_command, static) =
+{
+  .path = "kube-proxy conf",
+  .short_help = "kube-proxy conf [buckets <n>] [timeout <s>]",
+  .function = kp_conf_command_fn,
+};
+
+static clib_error_t *
+kp_show_command_fn (vlib_main_t * vm,
+              unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  vlib_cli_output(vm, "%U", format_kp_main);
+  return NULL;
+}
+
+
+VLIB_CLI_COMMAND (kp_show_command, static) =
+{
+  .path = "show kube-proxy",
+  .short_help = "show kube-proxy",
+  .function = kp_show_command_fn,
+};
+
+static clib_error_t *
+kp_show_vips_command_fn (vlib_main_t * vm,
+              unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  unformat_input_t line_input;
+  kp_main_t *kpm = &kp_main;
+  kp_vip_t *vip;
+  u8 verbose = 0;
+
+  if (!unformat_user (input, unformat_line_input, &line_input))
+      return 0;
+
+  if (unformat(&line_input, "verbose"))
+    verbose = 1;
+
+  pool_foreach(vip, kpm->vips, {
+      vlib_cli_output(vm, "%U\n", verbose?format_kp_vip_detailed:format_kp_vip, vip);
+  });
+
+  unformat_free (&line_input);
+  return NULL;
+}
+
+VLIB_CLI_COMMAND (kp_show_vips_command, static) =
+{
+  .path = "show kube-proxy vips",
+  .short_help = "show kube-proxy vips [verbose]",
+  .function = kp_show_vips_command_fn,
+};
+
+static clib_error_t *
+kp_set_interface_nat4_command_fn (vlib_main_t * vm,
+                                  unformat_input_t * input,
+                                  vlib_cli_command_t * cmd)
+{
+  unformat_input_t _line_input, *line_input = &_line_input;
+  vnet_main_t * vnm = vnet_get_main();
+  clib_error_t * error = 0;
+  u32 sw_if_index;
+  u32 * inside_sw_if_indices = 0;
+  int is_del = 0;
+  int i;
+
+  sw_if_index = ~0;
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "in %U", unformat_vnet_sw_interface,
+                    vnm, &sw_if_index))
+        vec_add1 (inside_sw_if_indices, sw_if_index);
+      else if (unformat (line_input, "del"))
+        is_del = 1;
+      else
+        {
+          error = clib_error_return (0, "unknown input '%U'",
+            format_unformat_error, line_input);
+          goto done;
+        }
+    }
+
+  if (vec_len (inside_sw_if_indices))
+    {
+      for (i = 0; i < vec_len(inside_sw_if_indices); i++)
+        {
+          sw_if_index = inside_sw_if_indices[i];
+
+	  if (kp_nat4_interface_add_del (sw_if_index, is_del))
+	    {
+	      error = clib_error_return (0, "%s %U failed",
+					 is_del ? "del" : "add",
+					 format_vnet_sw_interface_name, vnm,
+					 vnet_get_sw_interface (vnm,
+								sw_if_index));
+	      goto done;
+	    }
+        }
+    }
+
+done:
+  unformat_free (line_input);
+  vec_free (inside_sw_if_indices);
+
+  return error;
+}
+
+VLIB_CLI_COMMAND (kp_set_interface_nat4_command, static) = {
+  .path = "kube-proxy set interface nat4",
+  .function = kp_set_interface_nat4_command_fn,
+  .short_help = "kube-proxy set interface nat4 in <intfc> [del]",
+};
+
diff --git a/src/plugins/kubeproxy/kp_node.c b/src/plugins/kubeproxy/kp_node.c
new file mode 100644
index 00000000000..5cee6971e35
--- /dev/null
+++ b/src/plugins/kubeproxy/kp_node.c
@@ -0,0 +1,839 @@
+/*
+ * Copyright (c) 2016 Intel 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 anated to in writing, software
+ * distributed under the License is distributed on an "POD IS" BPODIS,
+ * 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 <vnet/fib/ip4_fib.h>
+
+#include <kubeproxy/kp.h>
+#include <kubeproxy/kphash.h>
+
+#define foreach_kp_error \
+ _(NONE, "no error") \
+ _(PROTO_NOT_SUPPORTED, "protocol not supported")
+
+typedef enum {
+#define _(sym,str) KP_ERROR_##sym,
+  foreach_kp_error
+#undef _
+    KP_N_ERROR,
+} kp_error_t;
+
+static char *kp_error_strings[] = {
+#define _(sym,string) string,
+    foreach_kp_error
+#undef _
+};
+
+typedef struct {
+  u32 vip_index;
+  u32 pod_index;
+} kp_trace_t;
+
+typedef struct {
+  u32 vip_index;
+  u32 node_port;
+} kp_nodeport_trace_t;
+
+typedef struct {
+  u32 rx_sw_if_index;
+  u32 next_index;
+} kp_nat_trace_t;
+
+u8 *
+format_kp_trace (u8 * s, va_list * args)
+{
+  kp_main_t *kpm = &kp_main;
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  kp_trace_t *t = va_arg (*args, kp_trace_t *);
+  if (pool_is_free_index(kpm->vips, t->vip_index)) {
+      s = format(s, "kp vip[%d]: This VIP was freed since capture\n");
+  } else {
+      s = format(s, "kp vip[%d]: %U\n", t->vip_index, format_kp_vip, &kpm->vips[t->vip_index]);
+  }
+  if (pool_is_free_index(kpm->pods, t->pod_index)) {
+      s = format(s, "  kp pod[%d]: This POD was freed since capture");
+  } else {
+      s = format(s, "  kp pod[%d]: %U", t->pod_index, format_kp_pod, &kpm->pods[t->pod_index]);
+  }
+  return s;
+}
+
+u8 *
+format_kp_nat_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  kp_nat_trace_t *t = va_arg (*args, kp_nat_trace_t *);
+
+  s = format(s, "kp nat: rx_sw_if_index = %d, next_index = %d",
+	     t->rx_sw_if_index, t->next_index);
+
+  return s;
+}
+
+kp_hash_t *kp_get_sticky_table(u32 thread_index)
+{
+  kp_main_t *kpm = &kp_main;
+  kp_hash_t *sticky_ht = kpm->per_cpu[thread_index].sticky_ht;
+  //Check if size changed
+  if (PREDICT_FALSE(sticky_ht && (kpm->per_cpu_sticky_buckets != kp_hash_nbuckets(sticky_ht))))
+    {
+      //Dereference everything in there
+      kp_hash_bucket_t *b;
+      u32 i;
+      kp_hash_foreach_entry(sticky_ht, b, i) {
+	vlib_refcount_add(&kpm->pod_refcount, thread_index, b->value[i], -1);
+	vlib_refcount_add(&kpm->pod_refcount, thread_index, 0, 1);
+      }
+
+      kp_hash_free(sticky_ht);
+      sticky_ht = NULL;
+    }
+
+  //Create if necessary
+  if (PREDICT_FALSE(sticky_ht == NULL)) {
+    kpm->per_cpu[thread_index].sticky_ht = kp_hash_alloc(kpm->per_cpu_sticky_buckets, kpm->flow_timeout);
+    sticky_ht = kpm->per_cpu[thread_index].sticky_ht;
+    clib_warning("Regenerated sticky table %p", sticky_ht);
+  }
+
+  ASSERT(sticky_ht);
+
+  //Update timeout
+  sticky_ht->timeout = kpm->flow_timeout;
+  return sticky_ht;
+}
+
+u64
+kp_node_get_other_ports4(ip4_header_t *ip40)
+{
+  return 0;
+}
+
+u64
+kp_node_get_other_ports6(ip6_header_t *ip60)
+{
+  return 0;
+}
+
+static_always_inline u32
+kp_node_get_hash(vlib_buffer_t *p, u8 is_input_v4)
+{
+  u32 hash;
+  if (is_input_v4)
+    {
+      ip4_header_t *ip40;
+      u64 ports;
+      ip40 = vlib_buffer_get_current (p);
+      if (PREDICT_TRUE (ip40->protocol == IP_PROTOCOL_TCP ||
+		       ip40->protocol == IP_PROTOCOL_UDP))
+	ports = ((u64)((udp_header_t *)(ip40 + 1))->src_port << 16) |
+	  ((u64)((udp_header_t *)(ip40 + 1))->dst_port);
+      else
+	ports = kp_node_get_other_ports4(ip40);
+
+      hash = kp_hash_hash(*((u64 *)&ip40->address_pair), ports,
+			  0, 0, 0);
+    }
+  else
+    {
+      ip6_header_t *ip60;
+      ip60 = vlib_buffer_get_current (p);
+      u64 ports;
+      if (PREDICT_TRUE (ip60->protocol == IP_PROTOCOL_TCP ||
+			ip60->protocol == IP_PROTOCOL_UDP))
+	ports = ((u64)((udp_header_t *)(ip60 + 1))->src_port << 16) |
+	((u64)((udp_header_t *)(ip60 + 1))->dst_port);
+      else
+	ports = kp_node_get_other_ports6(ip60);
+
+      hash = kp_hash_hash(ip60->src_address.as_u64[0],
+			  ip60->src_address.as_u64[1],
+			  ip60->dst_address.as_u64[0],
+			  ip60->dst_address.as_u64[1],
+			  ports);
+    }
+  return hash;
+}
+
+static_always_inline uword
+kp_node_fn (vlib_main_t * vm,
+         vlib_node_runtime_t * node, vlib_frame_t * frame,
+         u8 is_input_v4, //Compile-time parameter stating that is input is v4 (or v6)
+         u8 is_nat_v4) //Compile-time parameter stating that is NAT is v4 (or v6)
+{
+  kp_main_t *kpm = &kp_main;
+  u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
+  u32 thread_index = vlib_get_thread_index();
+  u32 kp_time = kp_hash_time_now(vm);
+
+  kp_hash_t *sticky_ht = kp_get_sticky_table(thread_index);
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  u32 nexthash0 = 0;
+  if (PREDICT_TRUE(n_left_from > 0))
+    nexthash0 = kp_node_get_hash(vlib_get_buffer (vm, from[0]), is_input_v4);
+
+  while (n_left_from > 0)
+  {
+    vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+    while (n_left_from > 0 && n_left_to_next > 0)
+    {
+      u32 pi0;
+      vlib_buffer_t *p0;
+      kp_vip_t *vip0;
+      u32 podindex0;
+      u32 available_index0;
+      u8 counter = 0;
+      u32 hash0 = nexthash0;
+
+      if (PREDICT_TRUE(n_left_from > 1))
+	{
+	  vlib_buffer_t *p1 = vlib_get_buffer (vm, from[1]);
+	  //Compute next hash and prefetch bucket
+	  nexthash0 = kp_node_get_hash(p1, is_input_v4);
+	  kp_hash_prefetch_bucket(sticky_ht, nexthash0);
+	  //Prefetch for encap, next
+	  CLIB_PREFETCH (vlib_buffer_get_current(p1) - 64, 64, STORE);
+	}
+
+      if (PREDICT_TRUE(n_left_from > 2))
+	{
+	  vlib_buffer_t *p2;
+	  p2 = vlib_get_buffer(vm, from[2]);
+	  /* prefetch packet header and data */
+	  vlib_prefetch_buffer_header(p2, STORE);
+	  CLIB_PREFETCH (vlib_buffer_get_current(p2), 64, STORE);
+	}
+
+      pi0 = to_next[0] = from[0];
+      from += 1;
+      n_left_from -= 1;
+      to_next += 1;
+      n_left_to_next -= 1;
+
+      p0 = vlib_get_buffer (vm, pi0);
+      vip0 = pool_elt_at_index (kpm->vips,
+				vnet_buffer (p0)->ip.adj_index[VLIB_TX]);
+
+      kp_hash_get(sticky_ht, hash0, vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+		  kp_time, &available_index0, &podindex0);
+
+      if (PREDICT_TRUE(podindex0 != ~0))
+	{
+	  //Found an existing entry
+	  counter = KP_VIP_COUNTER_NEXT_PACKET;
+	}
+      else if (PREDICT_TRUE(available_index0 != ~0))
+	{
+	  //There is an available slot for a new flow
+	  podindex0 = vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].pod_index;
+	  counter = KP_VIP_COUNTER_FIRST_PACKET;
+	  counter = (podindex0 == 0)?KP_VIP_COUNTER_NO_SERVER:counter;
+
+	  //Dereference previously used
+	  vlib_refcount_add(&kpm->pod_refcount, thread_index,
+			    kp_hash_available_value(sticky_ht, hash0, available_index0), -1);
+	  vlib_refcount_add(&kpm->pod_refcount, thread_index,
+			    podindex0, 1);
+
+	  //Add sticky entry
+	  //Note that when there is no POD configured, an entry is configured anyway.
+	  //But no configured POD is not something that should happen
+	  kp_hash_put(sticky_ht, hash0, podindex0,
+		      vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+		      available_index0, kp_time);
+	}
+      else
+	{
+	  //Could not store new entry in the table
+	  podindex0 = vip0->new_flow_table[hash0 & vip0->new_flow_table_mask].pod_index;
+	  counter = KP_VIP_COUNTER_UNTRACKED_PACKET;
+	}
+
+      vlib_increment_simple_counter(&kpm->vip_counters[counter],
+				    thread_index,
+				    vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+				    1);
+      //Now let's do NAT
+      {
+	udp_header_t *port0;
+
+	if ( (is_input_v4==1) && (is_nat_v4==1) )  /* NAT44 */
+	  {
+	    ip4_header_t *ip40;
+	    ip40 = vlib_buffer_get_current(p0);
+	    port0 = (udp_header_t *)(ip40 + 1);
+	    ip40->dst_address = kpm->pods[podindex0].address.ip4;
+	    ip40->checksum = ip4_header_checksum (ip40);
+	  }
+	else if ( (is_input_v4==1) && (is_nat_v4==0) )  /* NAT46 */
+	  {
+	    /* TBD */
+	    u16 len0 = 0;
+	    ip4_header_t *ip40;
+	    ip40 = vlib_buffer_get_current(p0);
+	    len0 = clib_net_to_host_u16(ip40->length);
+
+	    vlib_buffer_advance(p0, (-sizeof(ip6_header_t)+sizeof(ip4_header_t)) );
+	    ip6_header_t *ip60;
+	    ip60 = vlib_buffer_get_current(p0);
+	    port0 = (udp_header_t *)(ip60 + 1);
+	    ip60->payload_length = len0 - sizeof(ip4_header_t);
+	    ip60->dst_address = kpm->pods[podindex0].address.ip6;
+	  }
+	else if ( (is_input_v4==0) && (is_nat_v4==0) )  /* NAT66 */
+	  {
+	    ip6_header_t *ip60;
+	    ip60 = vlib_buffer_get_current(p0);
+	    port0 = (udp_header_t *)(ip60 + 1);
+	    ip60->dst_address = kpm->pods[podindex0].address.ip6;
+	  }
+	else /* NAT64 */
+	  {
+	    /* TBD */
+	    u16 len0 = 0;
+	    ip6_header_t *ip60;
+	    ip60 = vlib_buffer_get_current(p0);
+	    len0 = clib_net_to_host_u16(ip60->payload_length);
+
+	    vlib_buffer_advance(p0, (sizeof(ip6_header_t)-sizeof(ip4_header_t)) );
+	    ip4_header_t *ip40;
+	    ip40 = vlib_buffer_get_current(p0);
+	    port0 = (udp_header_t *)(ip40 + 1);
+	    ip40->length = len0 + sizeof(ip4_header_t);
+	    ip40->dst_address = kpm->pods[podindex0].address.ip4;
+	    ip40->checksum = ip4_header_checksum (ip40);
+	  }
+
+	port0->dst_port = vip0->target_port;
+      }
+
+      if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
+	{
+	  kp_trace_t *tr = vlib_add_trace (vm, node, p0, sizeof (*tr));
+	  tr->pod_index = podindex0;
+	  tr->vip_index = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+	}
+
+      //Enqueue to next
+      //Note that this is going to error if podindex0 == 0
+      vnet_buffer (p0)->ip.adj_index[VLIB_TX] = kpm->pods[podindex0].dpo.dpoi_index;
+      vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+				       n_left_to_next, pi0,
+				       kpm->pods[podindex0].dpo.dpoi_next_node);
+    }
+    vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+  }
+
+  return frame->n_vectors;
+}
+
+u8 *
+format_nodeport_kp_trace (u8 * s, va_list * args)
+{
+  kp_main_t *kpm = &kp_main;
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  kp_nodeport_trace_t *t = va_arg (*args, kp_nodeport_trace_t *);
+  if (pool_is_free_index(kpm->vips, t->vip_index)) {
+      s = format(s, "kp vip[%d]: This VIP was freed since capture\n");
+  } else {
+      s = format(s, "kp vip[%d]: %U\n", t->vip_index, format_kp_vip, &kpm->vips[t->vip_index]);
+  }
+
+  s = format(s, "  kp node_port: %d", t->node_port);
+
+  return s;
+}
+static uword
+kp_nodeport_node_fn (vlib_main_t * vm,
+                     vlib_node_runtime_t * node,
+		     vlib_frame_t * frame,
+		     u8 is_input_v4)
+{
+  kp_main_t *kpm = &kp_main;
+  u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+
+  while (n_left_from > 0)
+  {
+    vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+    while (n_left_from > 0 && n_left_to_next > 0)
+    {
+      u32 pi0;
+      vlib_buffer_t *p0;
+      udp_header_t * udp_0;
+      uword * entry0;
+      u32 next0 = KP_NODEPORT_NEXT_DROP;
+
+
+      if (PREDICT_TRUE(n_left_from > 1))
+	{
+	  vlib_buffer_t *p1 = vlib_get_buffer (vm, from[1]);
+	  //Prefetch for encap, next
+	  CLIB_PREFETCH (vlib_buffer_get_current(p1) - 64, 64, STORE);
+	}
+
+      if (PREDICT_TRUE(n_left_from > 2))
+	{
+	  vlib_buffer_t *p2;
+	  p2 = vlib_get_buffer(vm, from[2]);
+	  /* prefetch packet header and data */
+	  vlib_prefetch_buffer_header(p2, STORE);
+	  CLIB_PREFETCH (vlib_buffer_get_current(p2), 64, STORE);
+	}
+
+      pi0 = to_next[0] = from[0];
+      from += 1;
+      n_left_from -= 1;
+      to_next += 1;
+      n_left_to_next -= 1;
+
+      p0 = vlib_get_buffer (vm, pi0);
+
+      if (is_input_v4==1)
+	{
+	  ip4_header_t *ip40;
+	  vlib_buffer_advance
+	    (p0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
+	  ip40 = vlib_buffer_get_current(p0);
+	  udp_0 = (udp_header_t *)(ip40 + 1);
+	}
+      else
+	{
+	  ip6_header_t *ip60;
+	  vlib_buffer_advance
+	    (p0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
+	  ip60 = vlib_buffer_get_current(p0);
+	  udp_0 = (udp_header_t *)(ip60 + 1);
+	}
+
+      entry0 = hash_get_mem(kpm->nodeport_by_key, &(udp_0->dst_port));
+
+
+      if (is_input_v4==1)
+	{
+          next0 = KP_NODEPORT_NEXT_IP4_NAT4;
+	}
+      else
+	{
+	  next0 = KP_NODEPORT_NEXT_IP6_NAT6;
+	}
+
+      if (PREDICT_FALSE (p0->flags & VLIB_BUFFER_IS_TRACED))
+	{
+	  kp_nodeport_trace_t *tr = vlib_add_trace (vm, node,
+						    p0, sizeof (*tr));
+	  tr->vip_index = vnet_buffer (p0)->ip.adj_index[VLIB_TX];
+	  tr->node_port = (u32)clib_net_to_host_u16(udp_0->dst_port);
+	}
+
+      //Enqueue to next
+      vnet_buffer(p0)->ip.adj_index[VLIB_TX] = entry0[0];
+      vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
+				       n_left_to_next, pi0, next0);
+    }
+    vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+  }
+
+  return frame->n_vectors;
+
+}
+
+/**
+ * @brief Match NAT4 static mapping.
+ *
+ * @param sm          NAT main.
+ * @param match       Address and port to match.
+ * @param mapping     External or local address and port of the matched mapping.
+ *
+ * @returns 0 if match found otherwise 1.
+ */
+int kp_nat4_mapping_match (kp_main_t *kpm,
+                           kp_snat4_key_t match,
+			   kp_snat4_key_t * mapping)
+{
+  clib_bihash_kv_8_8_t kv, value;
+  kp_snat_mapping_t *m;
+  kp_snat4_key_t m_key;
+  clib_bihash_8_8_t *mapping_hash = &kpm->mapping_by_pod;
+
+  m_key.addr = match.addr;
+  m_key.port = match.port;
+  m_key.protocol = match.protocol;
+  m_key.fib_index = match.fib_index;
+
+  kv.key = m_key.as_u64;
+
+  if (clib_bihash_search_8_8 (mapping_hash, &kv, &value))
+    {
+      return 1;
+    }
+
+  m = pool_elt_at_index (kpm->snat_mappings, value.value);
+
+  if (m->svr_type == KP_SVR_TYPE_VIP_PORT)
+    {
+      mapping->addr = m->vip.ip4;
+      mapping->port = clib_host_to_net_u16 (m->port);
+      mapping->fib_index = m->fib_index;
+      mapping->protocol = match.protocol;
+    }
+  else if (m->svr_type == KP_SVR_TYPE_NODEIP_PORT)
+    {
+      mapping->addr = m->node_ip.ip4;
+      mapping->port = clib_host_to_net_u16 (m->node_port);
+      mapping->fib_index = m->fib_index;
+      mapping->protocol = match.protocol;
+    }
+
+  return 0;
+}
+
+static uword
+kp_nat4_in2out_node_fn (vlib_main_t * vm,
+                        vlib_node_runtime_t * node,
+                        vlib_frame_t * frame)
+{
+  u32 n_left_from, * from, * to_next;
+  kp_nat4_in2out_next_t next_index;
+  u32 pkts_processed = 0;
+  kp_main_t *kpm = &kp_main;
+  u32 stats_node_index;
+
+  stats_node_index = kp_nat4_in2out_node.index;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index,
+			   to_next, n_left_to_next);
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+          u32 bi0;
+	  vlib_buffer_t * b0;
+          u32 next0;
+          u32 sw_if_index0;
+          ip4_header_t * ip0;
+          ip_csum_t sum0;
+          u32 new_addr0, old_addr0;
+          u16 old_port0, new_port0;
+          udp_header_t * udp0;
+          tcp_header_t * tcp0;
+          kp_snat4_key_t key0, sm0;
+          u32 proto0;
+          u32 rx_fib_index0;
+
+          /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+          next0 = KP_NAT4_IN2OUT_NEXT_LOOKUP;
+
+          ip0 = vlib_buffer_get_current (b0);
+          udp0 = ip4_next_header (ip0);
+          tcp0 = (tcp_header_t *) udp0;
+
+          sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
+	  rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index(sw_if_index0);
+
+          proto0 = kp_ip_proto_to_nat_proto (ip0->protocol);
+
+          if (PREDICT_FALSE (proto0 == ~0))
+              goto trace0;
+
+          key0.addr = ip0->src_address;
+          key0.protocol = proto0;
+          key0.port = udp0->src_port;
+          key0.fib_index = rx_fib_index0;
+
+          if (kp_nat4_mapping_match (kpm, key0, &sm0))
+            {
+              next0= KP_NAT4_IN2OUT_NEXT_DROP;
+              goto trace0;
+            }
+
+          new_addr0 = sm0.addr.as_u32;
+          new_port0 = sm0.port;
+          vnet_buffer(b0)->sw_if_index[VLIB_TX] = sm0.fib_index;
+          old_addr0 = ip0->src_address.as_u32;
+          ip0->src_address.as_u32 = new_addr0;
+
+          sum0 = ip0->checksum;
+          sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
+                                 ip4_header_t,
+                                 src_address /* changed member */);
+          ip0->checksum = ip_csum_fold (sum0);
+
+          if (PREDICT_FALSE(new_port0 != udp0->dst_port))
+            {
+              if (PREDICT_TRUE(proto0 == KP_NAT_PROTOCOL_TCP))
+                {
+                  old_port0 = tcp0->src_port;
+                  tcp0->src_port = new_port0;
+
+                  sum0 = tcp0->checksum;
+                  sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
+                                         ip4_header_t,
+                                         dst_address /* changed member */);
+                  sum0 = ip_csum_update (sum0, old_port0, new_port0,
+                                         ip4_header_t /* cheat */,
+                                         length /* changed member */);
+                  tcp0->checksum = ip_csum_fold(sum0);
+                }
+              else
+                {
+                  old_port0 = udp0->src_port;
+                  udp0->src_port = new_port0;
+                  udp0->checksum = 0;
+                }
+            }
+          else
+            {
+              if (PREDICT_TRUE(proto0 == KP_NAT_PROTOCOL_TCP))
+                {
+                  sum0 = tcp0->checksum;
+                  sum0 = ip_csum_update (sum0, old_addr0, new_addr0,
+                                         ip4_header_t,
+                                         dst_address /* changed member */);
+                  tcp0->checksum = ip_csum_fold(sum0);
+                }
+            }
+
+        trace0:
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+            {
+              kp_nat_trace_t *t =
+                 vlib_add_trace (vm, node, b0, sizeof (*t));
+              t->rx_sw_if_index = sw_if_index0;
+              t->next_index = next0;
+            }
+
+          pkts_processed += next0 != KP_NAT4_IN2OUT_NEXT_DROP;
+
+          /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+
+  vlib_node_increment_counter (vm, stats_node_index,
+                               KP_NAT_IN2OUT_ERROR_IN2OUT_PACKETS,
+                               pkts_processed);
+  return frame->n_vectors;
+}
+
+static uword
+kp6_nat6_node_fn (vlib_main_t * vm,
+         vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  return kp_node_fn(vm, node, frame, 0, 0);
+}
+
+static uword
+kp6_nat4_node_fn (vlib_main_t * vm,
+         vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  return kp_node_fn(vm, node, frame, 0, 1);
+}
+
+static uword
+kp4_nat6_node_fn (vlib_main_t * vm,
+         vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  return kp_node_fn(vm, node, frame, 1, 0);
+}
+
+static uword
+kp4_nat4_node_fn (vlib_main_t * vm,
+         vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  return kp_node_fn(vm, node, frame, 1, 1);
+}
+
+VLIB_REGISTER_NODE (kp6_nat6_node) =
+{
+  .function = kp6_nat6_node_fn,
+  .name = "kp6-nat6",
+  .vector_size = sizeof (u32),
+  .format_trace = format_kp_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NEXT_DROP] = "error-drop"
+  },
+};
+
+VLIB_REGISTER_NODE (kp6_nat4_node) =
+{
+  .function = kp6_nat4_node_fn,
+  .name = "kp6-nat4",
+  .vector_size = sizeof (u32),
+  .format_trace = format_kp_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NEXT_DROP] = "error-drop"
+  },
+};
+
+VLIB_REGISTER_NODE (kp4_nat6_node) =
+{
+  .function = kp4_nat6_node_fn,
+  .name = "kp4-nat6",
+  .vector_size = sizeof (u32),
+  .format_trace = format_kp_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NEXT_DROP] = "error-drop"
+  },
+};
+
+VLIB_REGISTER_NODE (kp4_nat4_node) =
+{
+  .function = kp4_nat4_node_fn,
+  .name = "kp4-nat4",
+  .vector_size = sizeof (u32),
+  .format_trace = format_kp_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NEXT_DROP] = "error-drop"
+  },
+};
+
+static uword
+kp4_nodeport_node_fn (vlib_main_t * vm,
+                      vlib_node_runtime_t * node,
+		      vlib_frame_t * frame)
+{
+  return kp_nodeport_node_fn(vm, node, frame, 1);
+}
+
+static uword
+kp6_nodeport_node_fn (vlib_main_t * vm,
+                      vlib_node_runtime_t * node,
+		      vlib_frame_t * frame)
+{
+  return kp_nodeport_node_fn(vm, node, frame, 0);
+}
+
+VLIB_REGISTER_NODE (kp4_nodeport_node) =
+{
+  .function = kp4_nodeport_node_fn,
+  .name = "kp4-nodeport",
+  .vector_size = sizeof (u32),
+  .format_trace = format_nodeport_kp_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_NODEPORT_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NODEPORT_NEXT_IP4_NAT4] = "kp4-nat4",
+      [KP_NODEPORT_NEXT_IP4_NAT6] = "kp4-nat6",
+      [KP_NODEPORT_NEXT_IP6_NAT4] = "kp6-nat4",
+      [KP_NODEPORT_NEXT_IP6_NAT6] = "kp6-nat6",
+      [KP_NODEPORT_NEXT_DROP] = "error-drop",
+  },
+};
+
+VLIB_REGISTER_NODE (kp6_nodeport_node) =
+{
+  .function = kp6_nodeport_node_fn,
+  .name = "kp6-nodeport",
+  .vector_size = sizeof (u32),
+  .format_trace = format_nodeport_kp_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_NODEPORT_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NODEPORT_NEXT_IP4_NAT4] = "kp4-nat4",
+      [KP_NODEPORT_NEXT_IP4_NAT6] = "kp4-nat6",
+      [KP_NODEPORT_NEXT_IP6_NAT4] = "kp6-nat4",
+      [KP_NODEPORT_NEXT_IP6_NAT6] = "kp6-nat6",
+      [KP_NODEPORT_NEXT_DROP] = "error-drop",
+  },
+};
+
+VNET_FEATURE_INIT (kp_nat4_in2out_node_fn, static) =
+{
+  .arc_name = "ip4-unicast",
+  .node_name = "kp-nat4-in2out",
+  .runs_before = VNET_FEATURES ("ip4-lookup"),
+};
+
+VLIB_REGISTER_NODE (kp_nat4_in2out_node) =
+{
+  .function = kp_nat4_in2out_node_fn,
+  .name = "kp-nat4-in2out",
+  .vector_size = sizeof (u32),
+  .format_trace = format_kp_nat_trace,
+
+  .n_errors = KP_N_ERROR,
+  .error_strings = kp_error_strings,
+
+  .n_next_nodes = KP_NAT4_IN2OUT_N_NEXT,
+  .next_nodes =
+  {
+      [KP_NAT4_IN2OUT_NEXT_DROP] = "error-drop",
+      [KP_NAT4_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
+  },
+};
diff --git a/src/plugins/kubeproxy/kp_plugin_doc.md b/src/plugins/kubeproxy/kp_plugin_doc.md
new file mode 100644
index 00000000000..e1247916bd5
--- /dev/null
+++ b/src/plugins/kubeproxy/kp_plugin_doc.md
@@ -0,0 +1,105 @@
+# Kube-proxy plugin for VPP
+
+## Overview
+
+This plugin provides kube-proxy data plane on user space,
+which is used to replace linux kernal's kube-proxy based on iptables.
+The idea is largely inspired from VPP LB plugin.
+
+Currently, kube-proxy plugin supports three service types:
+1) Cluster IP plus Port: support any protocols, including TCP, UDP.
+2) Node IP plus Node Port: currently only support UDP.
+3) External Load Balancer.
+
+For Cluster IP plus Port case:
+kube-proxy is configured with a set of Virtual IPs (VIP, which can be
+prefixes), and for each VIP, with a set of POD addresses (PODs).
+
+For a specific session received for a given VIP (or VIP prefix), 
+first packet selects a Pod according to internal load balancing algorithm, 
+then does DNAT operation and sent to chosen Pod.
+At the same time, will create a session entry to store Pod chosen result.
+Following packets for that session will look up session table first, 
+which ensures that a given session will always be routed to the same Pod.
+
+For returned packet from Pod, it will do SNAT operation and sent out.
+
+Please refer to below for details: 
+https://schd.ws/hosted_files/ossna2017/1e/VPP_K8S_GTPU_OSSNA.pdf
+
+
+## Configuration
+
+### Global KP parameters
+
+The kube-proxy needs to be configured with some parameters:
+
+	ku conf [buckets <n>] [timeout <s>]
+
+buckets: the *per-thread* established-connections-table number of buckets.
+
+timeout: the number of seconds a connection will remain in the
+         established-connections-table while no packet for this flow
+         is received.
+
+### Configure VIPs and Ports
+
+    ku vip <prefix>  port <n> target_port <n> node_port <n> \
+      [nat4|nat6)] [new_len <n>] [del]
+
+new_len is the size of the new-connection-table. It should be 1 or 2 orders of
+magnitude bigger than the number of PODs for the VIP in order to ensure a good
+load balancing.
+
+Examples:
+
+    ku vip 90.0.0.0/8 nat44 new_len 2048
+    ku vip 2003::/16 nat66 new_len 2048
+    
+### Configure PODs (for each VIP)
+
+    ku pod <vip-prefix> [<address> [<address> [...]]] [del]
+
+You can add (or delete) as many PODs at a time (for a single VIP).
+
+Examples:
+
+    ku pod 90.0.0.0/8 10.0.0.1
+    ku pod 2002::/16 2001::2 2001::3 2001::4
+
+### Configure SNAT
+
+    ku set interface nat4 in <intfc> [del]
+
+Set SNAT feature in a specific interface.
+
+
+## Monitoring
+
+The plugin provides quite a bunch of counters and information.
+
+    show ku
+    show ku vip verbose
+    show node counters
+
+
+## Design notes
+
+### Multi-Threading
+
+This implementation implement parallelism by using 
+one established-connections table per thread. This is equivalent to assuming
+that RSS will make a job similar to ECMP, and is pretty useful as threads don't
+need to get a lock in order to write in the table.
+
+### Hash Table
+
+A kube-proxy requires an efficient read and write Hash table. The Hash table
+used by ip6-forward is very read-efficient, but not so much for writing. In
+addition, it is not a big deal if writing into the Hash table fails.
+
+The plugin therefore uses a very specific Hash table.
+	- Fixed (and power of 2) number of buckets (configured at runtime)
+	- Fixed (and power of 2) elements per buckets (configured at compilation time)
+
+
diff --git a/src/plugins/kubeproxy/kp_test.c b/src/plugins/kubeproxy/kp_test.c
new file mode 100644
index 00000000000..895a6adedaa
--- /dev/null
+++ b/src/plugins/kubeproxy/kp_test.c
@@ -0,0 +1,268 @@
+/*
+ * Copyright (c) 2016 Intel 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 "POD IS" BPODIS,
+ * 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 <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vppinfra/error.h>
+#include <kubeproxy/kp.h>
+
+#define __plugin_msg_base kp_test_main.msg_id_base
+#include <vlibapi/vat_helper_macros.h>
+
+//TODO: Move that to vat/plugin_api.c
+//////////////////////////
+uword unformat_ip46_address (unformat_input_t * input, va_list * args)
+{
+  ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+  ip46_type_t type = va_arg (*args, ip46_type_t);
+  if ((type != IP46_TYPE_IP6) &&
+      unformat(input, "%U", unformat_ip4_address, &ip46->ip4)) {
+    ip46_address_mask_ip4(ip46);
+    return 1;
+  } else if ((type != IP46_TYPE_IP4) &&
+      unformat(input, "%U", unformat_ip6_address, &ip46->ip6)) {
+    return 1;
+  }
+  return 0;
+}
+uword unformat_ip46_prefix (unformat_input_t * input, va_list * args)
+{
+  ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
+  u8 *len = va_arg (*args, u8 *);
+  ip46_type_t type = va_arg (*args, ip46_type_t);
+
+  u32 l;
+  if ((type != IP46_TYPE_IP6) && unformat(input, "%U/%u", unformat_ip4_address, &ip46->ip4, &l)) {
+    if (l > 32)
+      return 0;
+    *len = l + 96;
+    ip46->pad[0] = ip46->pad[1] = ip46->pad[2] = 0;
+  } else if ((type != IP46_TYPE_IP4) && unformat(input, "%U/%u", unformat_ip6_address, &ip46->ip6, &l)) {
+    if (l > 128)
+      return 0;
+    *len = l;
+  } else {
+    return 0;
+  }
+  return 1;
+}
+/////////////////////////
+
+#define vl_msg_id(n,h) n,
+typedef enum {
+#include <kubeproxy/kp.api.h>
+    /* We'll want to know how many messages IDs we need... */
+    VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include <kubeproxy/kp.api.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun             /* define message structures */
+#include <kubeproxy/kp.api.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <kubeproxy/kp.api.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <kubeproxy/kp.api.h>
+#undef vl_api_version
+
+typedef struct {
+    /* API message ID base */
+    u16 msg_id_base;
+    vat_main_t *vat_main;
+} kp_test_main_t;
+
+kp_test_main_t kp_test_main;
+
+#define foreach_standard_reply_retval_handler   \
+_(kp_conf_reply)                 \
+_(kp_add_del_vip_reply)          \
+_(kp_add_del_pod_reply)
+
+#define _(n)                                            \
+    static void vl_api_##n##_t_handler                  \
+    (vl_api_##n##_t * mp)                               \
+    {                                                   \
+        vat_main_t * vam = kp_test_main.vat_main;   \
+        i32 retval = ntohl(mp->retval);                 \
+        if (vam->async_mode) {                          \
+            vam->async_errors += (retval < 0);          \
+        } else {                                        \
+            vam->retval = retval;                       \
+            vam->result_ready = 1;                      \
+        }                                               \
+    }
+foreach_standard_reply_retval_handler;
+#undef _
+
+/*
+ * Table of message reply handlers, must include boilerplate handlers
+ * we just generated
+ */
+#define foreach_vpe_api_reply_msg                               \
+  _(KP_CONF_REPLY, kp_conf_reply)                                     \
+  _(KP_ADD_DEL_VIP_REPLY, kp_add_del_vip_reply)                       \
+  _(KP_ADD_DEL_POD_REPLY, kp_add_del_pod_reply)
+
+static int api_kp_conf (vat_main_t * vam)
+{
+  unformat_input_t *i = vam->input;
+  vl_api_kp_conf_t mps, *mp;
+  int ret;
+
+  if (!unformat(i, "%u %u",
+               &mps.sticky_buckets_per_core,
+               &mps.flow_timeout)) {
+    errmsg ("invalid arguments\n");
+    return -99;
+  }
+
+  M(KP_CONF, mp);
+  S(mp);
+  W (ret);
+  return ret;
+}
+
+static int api_kp_add_del_vip (vat_main_t * vam)
+{
+  unformat_input_t * i = vam->input;
+  vl_api_kp_add_del_vip_t mps, *mp;
+  int ret;
+  mps.is_del = 0;
+  mps.is_nat4 = 0;
+
+  if (!unformat(i, "%U",
+                unformat_ip46_prefix, mps.ip_prefix, &mps.prefix_length, IP46_TYPE_ANY)) {
+    errmsg ("invalid prefix\n");
+    return -99;
+  }
+
+  if (unformat(i, "nat4")) {
+    mps.is_nat4 = 1;
+  } else if (unformat(i, "nat6")) {
+    mps.is_nat4 = 0;
+  } else {
+    errmsg ("no nat\n");
+    return -99;
+  }
+
+  if (!unformat(i, "%d", &mps.new_flows_table_length)) {
+    errmsg ("no table lentgh\n");
+    return -99;
+  }
+
+  if (unformat(i, "del")) {
+    mps.is_del = 1;
+  }
+
+  M(KP_ADD_DEL_VIP, mp);
+  S(mp);
+  W (ret);
+  return ret;
+}
+
+static int api_kp_add_del_pod (vat_main_t * vam)
+{
+  unformat_input_t * i = vam->input;
+  vl_api_kp_add_del_pod_t mps, *mp;
+  int ret;
+  mps.is_del = 0;
+
+  if (!unformat(i, "%U %U",
+                unformat_ip46_prefix, mps.vip_ip_prefix, &mps.vip_prefix_length, IP46_TYPE_ANY,
+                unformat_ip46_address, mps.pod_address)) {
+    errmsg ("invalid prefix or address\n");
+    return -99;
+  }
+
+  if (unformat(i, "del")) {
+    mps.is_del = 1;
+  }
+
+  M(KP_ADD_DEL_POD, mp);
+  S(mp);
+  W (ret);
+  return ret;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg                             \
+_(kp_conf, "<sticky_buckets_per_core> <flow_timeout>") \
+_(kp_add_del_vip, "<ip-prefix> <port> <target_port> <node_port> " \
+                  "[nat4|nat6] <new_table_len> [del]") \
+_(kp_add_del_pod, "<vip-ip-prefix> <address> [del]")
+
+static void 
+kp_vat_api_hookup (vat_main_t *vam)
+{
+  kp_test_main_t * kptm = &kp_test_main;
+  /* Hook up handlers for replies from the data plane plug-in */
+#define _(N,n)                                                  \
+  vl_msg_api_set_handlers((VL_API_##N + kptm->msg_id_base),       \
+                          #n,                                   \
+                          vl_api_##n##_t_handler,               \
+                          vl_noop_handler,                      \
+                          vl_api_##n##_t_endian,                \
+                          vl_api_##n##_t_print,                 \
+                          sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_reply_msg;
+#undef _
+
+  /* API messages we can send */
+#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
+  foreach_vpe_api_msg;
+#undef _
+
+  /* Help strings */
+#define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
+  foreach_vpe_api_msg;
+#undef _
+}
+
+clib_error_t * vat_plugin_register (vat_main_t *vam)
+{
+  kp_test_main_t * kptm = &kp_test_main;
+
+  u8 * name;
+
+  kptm->vat_main = vam;
+
+  /* Ask the vpp engine for the first assigned message-id */
+  name = format (0, "kp_%08x%c", api_version, 0);
+  kptm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+  if (kptm->msg_id_base != (u16) ~0)
+    kp_vat_api_hookup (vam);
+
+  vec_free(name);
+
+  return 0;
+}
diff --git a/src/plugins/kubeproxy/kphash.h b/src/plugins/kubeproxy/kphash.h
new file mode 100644
index 00000000000..2957aeb2a53
--- /dev/null
+++ b/src/plugins/kubeproxy/kphash.h
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 2017 Intel 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.
+ */
+
+/**
+ * vppinfra already includes tons of different hash tables.
+ * MagLev flow table is a bit different. It has to be very efficient
+ * for both writing and reading operations. But it does not need to
+ * be 100% reliable (write can fail). It also needs to recycle
+ * old entries in a lazy way.
+ *
+ * This hash table is the most dummy hash table you can do.
+ * Fixed total size, fixed bucket size.
+ * Advantage is that it could be very efficient (maybe).
+ *
+ */
+
+#ifndef KP_PLUGIN_KP_KPHASH_H_
+#define KP_PLUGIN_KP_KPHASH_H_
+
+#include <vnet/vnet.h>
+#include <vppinfra/xxhash.h>
+#include <vppinfra/crc32.h>
+
+/*
+ * @brief Number of entries per bucket.
+ */
+#define KPHASH_ENTRY_PER_BUCKET 4
+
+#define KP_HASH_DO_NOT_USE_SSE_BUCKETS 0
+
+/**
+ * 32 bits integer comparison for running values.
+ * 1 > 0 is true. But 1 > 0xffffffff also is.
+ */
+#define clib_u32_loop_gt(a, b) (((u32)(a)) - ((u32)(b)) < 0x7fffffff)
+
+/*
+ * @brief One bucket contains 4 entries.
+ * Each bucket takes one 64B cache line in memory.
+ */
+typedef struct {
+  CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
+  u32 hash[KPHASH_ENTRY_PER_BUCKET];
+  u32 timeout[KPHASH_ENTRY_PER_BUCKET];
+  u32 vip[KPHASH_ENTRY_PER_BUCKET];
+  u32 value[KPHASH_ENTRY_PER_BUCKET];
+} kp_hash_bucket_t;
+
+typedef struct {
+  u32 buckets_mask;
+  u32 timeout;
+  kp_hash_bucket_t buckets[];
+} kp_hash_t;
+
+#define kp_hash_nbuckets(h) (((h)->buckets_mask) + 1)
+#define kp_hash_size(h) ((h)->buckets_mask + KPHASH_ENTRY_PER_BUCKET)
+
+#define kp_hash_foreach_bucket(h, bucket) \
+  for (bucket = (h)->buckets; \
+	bucket < (h)->buckets + kp_hash_nbuckets(h); \
+	bucket++)
+
+#define kp_hash_foreach_entry(h, bucket, i) \
+    kp_hash_foreach_bucket(h, bucket) \
+      for (i = 0; i < KPHASH_ENTRY_PER_BUCKET; i++)
+
+#define kp_hash_foreach_valid_entry(h, bucket, i, now) \
+    kp_hash_foreach_entry(h, bucket, i) \
+       if (!clib_u32_loop_gt((now), bucket->timeout[i]))
+
+static_always_inline
+kp_hash_t *kp_hash_alloc(u32 buckets, u32 timeout)
+{
+  if (!is_pow2(buckets))
+    return NULL;
+
+  // Allocate 1 more bucket for prefetch
+  u32 size = ((u64)&((kp_hash_t *)(0))->buckets[0]) +
+      sizeof(kp_hash_bucket_t) * (buckets + 1);
+  u8 *mem = 0;
+  kp_hash_t *h;
+  vec_alloc_aligned(mem, size, CLIB_CACHE_LINE_BYTES);
+  h = (kp_hash_t *)mem;
+  h->buckets_mask = (buckets - 1);
+  h->timeout = timeout;
+  return h;
+}
+
+static_always_inline
+void kp_hash_free(kp_hash_t *h)
+{
+  u8 *mem = (u8 *)h;
+  vec_free(mem);
+}
+
+static_always_inline
+u32 kp_hash_hash(u64 k0, u64 k1, u64 k2, u64 k3, u64 k4)
+{
+#ifdef clib_crc32c_uses_intrinsics
+  u64 key[5];
+  key[0] = k0;
+  key[1] = k1;
+  key[2] = k2;
+  key[3] = k3;
+  key[4] = k4;
+  return clib_crc32c ((u8 *) key, 40);
+#else
+  u64 tmp = k0 ^ k1 ^ k2 ^ k3 ^ k4;
+  return (u32)clib_xxhash (tmp);
+#endif
+}
+
+static_always_inline
+void kp_hash_prefetch_bucket(kp_hash_t *ht, u32 hash)
+{
+  kp_hash_bucket_t *bucket = &ht->buckets[hash & ht->buckets_mask];
+  CLIB_PREFETCH(bucket, sizeof(*bucket), READ);
+}
+
+static_always_inline
+void kp_hash_get(kp_hash_t *ht, u32 hash, u32 vip, u32 time_now,
+		 u32 *available_index, u32 *found_value)
+{
+  kp_hash_bucket_t *bucket = &ht->buckets[hash & ht->buckets_mask];
+  *found_value = ~0;
+  *available_index = ~0;
+#if __SSE4_2__ && KP_HASH_DO_NOT_USE_SSE_BUCKETS == 0
+  u32 bitmask, found_index;
+  __m128i mask;
+
+  // mask[*] = timeout[*] > now
+  mask = _mm_cmpgt_epi32(_mm_loadu_si128 ((__m128i *) bucket->timeout),
+			 _mm_set1_epi32 (time_now));
+  // bitmask[*] = now <= timeout[*/4]
+  bitmask = (~_mm_movemask_epi8(mask)) & 0xffff;
+  // Get first index with now <= timeout[*], if any.
+  *available_index = (bitmask)?__builtin_ctz(bitmask)/4:*available_index;
+
+  // mask[*] = (timeout[*] > now) && (hash[*] == hash)
+  mask = _mm_and_si128(mask,
+		       _mm_cmpeq_epi32(
+			   _mm_loadu_si128 ((__m128i *) bucket->hash),
+			   _mm_set1_epi32 (hash)));
+
+  // Load the array of vip values
+  // mask[*] = (timeout[*] > now) && (hash[*] == hash) && (vip[*] == vip)
+  mask = _mm_and_si128(mask,
+		       _mm_cmpeq_epi32(
+			   _mm_loadu_si128 ((__m128i *) bucket->vip),
+			   _mm_set1_epi32 (vip)));
+
+  // mask[*] = (timeout[*x4] > now) && (hash[*x4] == hash) && (vip[*x4] == vip)
+  bitmask = _mm_movemask_epi8(mask);
+  // Get first index, if any
+  found_index = (bitmask)?__builtin_ctzll(bitmask)/4:0;
+  ASSERT(found_index < 4);
+  *found_value = (bitmask)?bucket->value[found_index]:*found_value;
+  bucket->timeout[found_index] =
+      (bitmask)?time_now + ht->timeout:bucket->timeout[found_index];
+#else
+  u32 i;
+  for (i = 0; i < KPHASH_ENTRY_PER_BUCKET; i++) {
+      u8 cmp = (bucket->hash[i] == hash && bucket->vip[i] == vip);
+      u8 timeouted = clib_u32_loop_gt(time_now, bucket->timeout[i]);
+      *found_value = (cmp || timeouted)?*found_value:bucket->value[i];
+      bucket->timeout[i] = (cmp || timeouted)?time_now + ht->timeout:bucket->timeout[i];
+      *available_index = (timeouted && (*available_index == ~0))?i:*available_index;
+
+      if (!cmp)
+	return;
+  }
+#endif
+}
+
+static_always_inline
+u32 kp_hash_available_value(kp_hash_t *h, u32 hash, u32 available_index)
+{
+  return h->buckets[hash & h->buckets_mask].value[available_index];
+}
+
+static_always_inline
+void kp_hash_put(kp_hash_t *h, u32 hash, u32 value, u32 vip,
+		 u32 available_index, u32 time_now)
+{
+  kp_hash_bucket_t *bucket = &h->buckets[hash & h->buckets_mask];
+  bucket->hash[available_index] = hash;
+  bucket->value[available_index] = value;
+  bucket->timeout[available_index] = time_now + h->timeout;
+  bucket->vip[available_index] = vip;
+}
+
+static_always_inline
+u32 kp_hash_elts(kp_hash_t *h, u32 time_now)
+{
+  u32 tot = 0;
+  kp_hash_bucket_t *bucket;
+  u32 i;
+  kp_hash_foreach_valid_entry(h, bucket, i, time_now) {
+    tot++;
+  }
+  return tot;
+}
+
+#endif /* KP_PLUGIN_KP_KPHASH_H_ */