NAT: Rename snat plugin to nat (VPP-955)

Change-Id: I30a7e3da7a4efc6038a91e27b48045d4b07e2764
Signed-off-by: Matus Fabian <matfabia@cisco.com>

38 files changed, 2861 insertions, 971 deletions

diff --git a/src/configure.ac b/src/configure.ac
index 7a038c2e49d..4c2d3b47f70 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -169,7 +169,7 @@ PLUGIN_ENABLED(lb)
 PLUGIN_ENABLED(memif)
 PLUGIN_ENABLED(pppoe)
 PLUGIN_ENABLED(sixrd)
-PLUGIN_ENABLED(snat)
+PLUGIN_ENABLED(nat)
 
 ###############################################################################
 # Dependency checks
diff --git a/src/examples/sample-plugin/sample_plugin_doc.md b/src/examples/sample-plugin/sample_plugin_doc.md
index 9348094c210..501a8dcaf98 100644
--- a/src/examples/sample-plugin/sample_plugin_doc.md
+++ b/src/examples/sample-plugin/sample_plugin_doc.md
@@ -29,7 +29,7 @@ Now run VPP and make sure the plugin is loaded.
 	...
 	load_one_plugin:184: Loaded plugin: memif_plugin.so (Packet Memory Interface (experimetal))
 	load_one_plugin:184: Loaded plugin: sample_plugin.so (Sample of VPP Plugin)
-	load_one_plugin:184: Loaded plugin: snat_plugin.so (Network Address Translation)
+	load_one_plugin:184: Loaded plugin: nat_plugin.so (Network Address Translation)
 	...
 	DBGvpp#
 
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index 8c7b3fac427..205bfe6d5bb 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -74,8 +74,8 @@ if ENABLE_SIXRD_PLUGIN
 include sixrd.am
 endif
 
-if ENABLE_SNAT_PLUGIN
-include snat.am
+if ENABLE_NAT_PLUGIN
+include nat.am
 endif
 
 include ../suffix-rules.mk
diff --git a/src/plugins/nat.am b/src/plugins/nat.am
new file mode 100644
index 00000000000..b967a716c8b
--- /dev/null
+++ b/src/plugins/nat.am
@@ -0,0 +1,41 @@
+
+# Copyright (c) <current-year> <your-organization>
+# 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.
+
+vppapitestplugins_LTLIBRARIES += nat_test_plugin.la
+vppplugins_LTLIBRARIES += nat_plugin.la
+
+nat_plugin_la_SOURCES = nat/nat.c		\
+        nat/nat_api.c				\
+        nat/in2out.c				\
+        nat/out2in.c				\
+	nat/nat_plugin.api.h			\
+        nat/nat_ipfix_logging.c	        	\
+        nat/nat_det.c               		\
+        nat/nat64.c                  		\
+        nat/nat64_cli.c              		\
+        nat/nat64_in2out.c           		\
+        nat/nat64_out2in.c           		\
+        nat/nat64_db.c
+
+API_FILES += nat/nat.api
+
+nobase_apiinclude_HEADERS +=		\
+  nat/nat_all_api_h.h			\
+  nat/nat_msg_enum.h			\
+  nat/nat.api.h
+
+nat_test_plugin_la_SOURCES = \
+  nat/nat_test.c nat/nat_plugin.api.h
+
+# vi:syntax=automake
diff --git a/src/plugins/snat/in2out.c b/src/plugins/nat/in2out.c
index abe0d9dbe87..62a11170ef3 100644
--- a/src/plugins/snat/in2out.c
+++ b/src/plugins/nat/in2out.c
@@ -21,9 +21,9 @@
 #include <vnet/ip/ip.h>
 #include <vnet/ethernet/ethernet.h>
 #include <vnet/fib/ip4_fib.h>
-#include <snat/snat.h>
-#include <snat/snat_ipfix_logging.h>
-#include <snat/snat_det.h>
+#include <nat/nat.h>
+#include <nat/nat_ipfix_logging.h>
+#include <nat/nat_det.h>
 
 #include <vppinfra/hash.h>
 #include <vppinfra/error.h>
@@ -49,8 +49,8 @@ static u8 * format_snat_in2out_trace (u8 * s, va_list * args)
   snat_in2out_trace_t * t = va_arg (*args, snat_in2out_trace_t *);
   char * tag;
 
-  tag = t->is_slow_path ? "SNAT_IN2OUT_SLOW_PATH" : "SNAT_IN2OUT_FAST_PATH";
-  
+  tag = t->is_slow_path ? "NAT44_IN2OUT_SLOW_PATH" : "NAT44_IN2OUT_FAST_PATH";
+
   s = format (s, "%s: sw_if_index %d, next index %d, session %d", tag,
               t->sw_if_index, t->next_index, t->session_index);
 
@@ -63,7 +63,7 @@ static u8 * format_snat_in2out_fast_trace (u8 * s, va_list * args)
   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
   snat_in2out_trace_t * t = va_arg (*args, snat_in2out_trace_t *);
 
-  s = format (s, "SANT_IN2OUT_FAST: sw_if_index %d, next index %d", 
+  s = format (s, "NAT44_IN2OUT_FAST: sw_if_index %d, next index %d",
               t->sw_if_index, t->next_index);
 
   return s;
@@ -78,7 +78,7 @@ static u8 * format_snat_in2out_worker_handoff_trace (u8 * s, va_list * args)
   char * m;
 
   m = t->do_handoff ? "next worker" : "same worker";
-  s = format (s, "SNAT_IN2OUT_WORKER_HANDOFF: %s %d", m, t->next_worker_index);
+  s = format (s, "NAT44_IN2OUT_WORKER_HANDOFF: %s %d", m, t->next_worker_index);
 
   return s;
 }
@@ -102,7 +102,7 @@ _(OUT_OF_PORTS, "Out of ports")                         \
 _(BAD_OUTSIDE_FIB, "Outside VRF ID not found")          \
 _(BAD_ICMP_TYPE, "unsupported ICMP type")               \
 _(NO_TRANSLATION, "No translation")
-  
+
 typedef enum {
 #define _(sym,str) SNAT_IN2OUT_ERROR_##sym,
   foreach_snat_in2out_error
@@ -138,11 +138,11 @@ typedef enum {
  * Packets aimed at outside interface and external addresss with active session
  * should be translated.
  *
- * @param sm            SNAT main
- * @param rt            SNAT runtime data
+ * @param sm            NAT main
+ * @param rt            NAT runtime data
  * @param sw_if_index0  index of the inside interface
  * @param ip0           IPv4 header
- * @param proto0        SNAT protocol
+ * @param proto0        NAT protocol
  * @param rx_fib_index0 RX FIB index
  *
  * @returns 0 if packet should be translated otherwise 1
@@ -254,7 +254,7 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
   user_key.addr = ip0->src_address;
   user_key.fib_index = rx_fib_index0;
   kv0.key = user_key.as_u64;
-  
+
   /* Ever heard of the "user" = src ip4 address before? */
   if (clib_bihash_search_8_8 (&sm->user_hash, &kv0, &value0))
     {
@@ -387,7 +387,7 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
       /* Create a new session */
       pool_get (sm->per_thread_data[thread_index].sessions, s);
       memset (s, 0, sizeof (*s));
-      
+
       s->outside_address_index = address_index;
 
       if (static_mapping)
@@ -418,7 +418,7 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
                           per_user_translation_list_elt -
                           sm->per_thread_data[thread_index].list_pool);
    }
-  
+
   s->in2out = *key0;
   s->out2in = key1;
   s->out2in.protocol = key0->protocol;
@@ -431,10 +431,10 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0,
   kv0.value = s - sm->per_thread_data[thread_index].sessions;
   if (clib_bihash_add_del_8_8 (&sm->in2out, &kv0, 1 /* is_add */))
       clib_warning ("in2out key add failed");
-  
+
   kv0.key = s->out2in.as_u64;
   kv0.value = s - sm->per_thread_data[thread_index].sessions;
-  
+
   if (clib_bihash_add_del_8_8 (&sm->out2in, &kv0, 1 /* is_add */))
       clib_warning ("out2in key add failed");
 
@@ -502,11 +502,11 @@ snat_in2out_error_t icmp_get_key(ip4_header_t *ip0,
 }
 
 /**
- * Get address and port values to be used for packet SNAT translation
+ * Get address and port values to be used for ICMP packet translation
  * and create session if needed
  *
- * @param[in,out] sm             SNAT main
- * @param[in,out] node           SNAT node runtime
+ * @param[in,out] sm             NAT main
+ * @param[in,out] node           NAT node runtime
  * @param[in] thread_index       thread index
  * @param[in,out] b0             buffer containing packet to be translated
  * @param[out] p_proto           protocol used for matching
@@ -601,10 +601,10 @@ out:
 }
 
 /**
- * Get address and port values to be used for packet SNAT translation
+ * Get address and port values to be used for ICMP packet translation
  *
- * @param[in] sm                 SNAT main
- * @param[in,out] node           SNAT node runtime
+ * @param[in] sm                 NAT main
+ * @param[in,out] node           NAT node runtime
  * @param[in] thread_index       thread index
  * @param[in,out] b0             buffer containing packet to be translated
  * @param[out] p_proto           protocol used for matching
@@ -732,7 +732,7 @@ static inline u32 icmp_in2out (snat_main_t *sm,
   sum0 = ip_csum_update (sum0, old_addr0, new_addr0, ip4_header_t,
                          src_address /* changed member */);
   ip0->checksum = ip_csum_fold (sum0);
-  
+
   if (!icmp_is_error_message (icmp0))
     {
       new_id0 = sm0.port;
@@ -810,12 +810,12 @@ out:
  * communicate even if they only use each other's external IP addresses
  * and ports.
  *
- * @param sm     SNAT main.
+ * @param sm     NAT main.
  * @param b0     Vlib buffer.
  * @param ip0    IP header.
  * @param udp0   UDP header.
  * @param tcp0   TCP header.
- * @param proto0 SNAT protocol.
+ * @param proto0 NAT protocol.
  */
 static inline void
 snat_hairpinning (snat_main_t *sm,
@@ -1413,14 +1413,14 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           snat_session_t * s0 = 0, * s1 = 0;
           clib_bihash_kv_8_8_t kv0, value0, kv1, value1;
           u32 iph_offset0 = 0, iph_offset1 = 0;
-          
+
 	  /* Prefetch next iteration. */
 	  {
 	    vlib_buffer_t * p2, * p3;
-            
+
 	    p2 = vlib_get_buffer (vm, from[2]);
 	    p3 = vlib_get_buffer (vm, from[3]);
-            
+
 	    vlib_prefetch_buffer_header (p2, LOAD);
 	    vlib_prefetch_buffer_header (p3, LOAD);
 
@@ -1435,7 +1435,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
 	  to_next += 2;
 	  n_left_from -= 2;
 	  n_left_to_next -= 2;
-          
+
 	  b0 = vlib_get_buffer (vm, bi0);
 	  b1 = vlib_get_buffer (vm, bi1);
 
@@ -1450,7 +1450,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           icmp0 = (icmp46_header_t *) udp0;
 
           sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index, 
+	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
                                    sw_if_index0);
 
           next0 = next1 = SNAT_IN2OUT_NEXT_LOOKUP;
@@ -1479,8 +1479,8 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
 
               if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
                 {
-                  next0 = icmp_in2out_slow_path 
-                    (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, 
+                  next0 = icmp_in2out_slow_path
+                    (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0,
                      node, next0, now, thread_index, &s0);
                   goto trace00;
                 }
@@ -1498,7 +1498,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           key0.port = udp0->src_port;
           key0.protocol = proto0;
           key0.fib_index = rx_fib_index0;
-          
+
           kv0.key = key0.as_u64;
 
           if (PREDICT_FALSE (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0) != 0))
@@ -1577,10 +1577,10 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
             }
         trace00:
 
-          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) 
-                            && (b0->flags & VLIB_BUFFER_IS_TRACED))) 
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
             {
-              snat_in2out_trace_t *t = 
+              snat_in2out_trace_t *t =
                  vlib_add_trace (vm, node, b0, sizeof (*t));
               t->is_slow_path = is_slow_path;
               t->sw_if_index = sw_if_index0;
@@ -1603,7 +1603,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           icmp1 = (icmp46_header_t *) udp1;
 
           sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
-	  rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index, 
+	  rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
                                    sw_if_index1);
 
           if (PREDICT_FALSE(ip1->ttl == 1))
@@ -1630,7 +1630,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
 
               if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
                 {
-                  next1 = icmp_in2out_slow_path 
+                  next1 = icmp_in2out_slow_path
                     (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
                      next1, now, thread_index, &s1);
                   goto trace01;
@@ -1649,7 +1649,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           key1.port = udp1->src_port;
           key1.protocol = proto1;
           key1.fib_index = rx_fib_index1;
-          
+
           kv1.key = key1.as_u64;
 
             if (PREDICT_FALSE(clib_bihash_search_8_8 (&sm->in2out, &kv1, &value1) != 0))
@@ -1728,10 +1728,10 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
             }
         trace01:
 
-          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) 
-                            && (b1->flags & VLIB_BUFFER_IS_TRACED))) 
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b1->flags & VLIB_BUFFER_IS_TRACED)))
             {
-              snat_in2out_trace_t *t = 
+              snat_in2out_trace_t *t =
                  vlib_add_trace (vm, node, b1, sizeof (*t));
               t->sw_if_index = sw_if_index1;
               t->next_index = next1;
@@ -1790,7 +1790,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           icmp0 = (icmp46_header_t *) udp0;
 
           sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index, 
+	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
                                    sw_if_index0);
 
           if (PREDICT_FALSE(ip0->ttl == 1))
@@ -1817,7 +1817,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
 
               if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
                 {
-                  next0 = icmp_in2out_slow_path 
+                  next0 = icmp_in2out_slow_path
                     (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
                      next0, now, thread_index, &s0);
                   goto trace0;
@@ -1836,7 +1836,7 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
           key0.port = udp0->src_port;
           key0.protocol = proto0;
           key0.fib_index = rx_fib_index0;
-          
+
           kv0.key = key0.as_u64;
 
           if (clib_bihash_search_8_8 (&sm->in2out, &kv0, &value0))
@@ -1916,10 +1916,10 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
             }
 
         trace0:
-          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) 
-                            && (b0->flags & VLIB_BUFFER_IS_TRACED))) 
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
             {
-              snat_in2out_trace_t *t = 
+              snat_in2out_trace_t *t =
                  vlib_add_trace (vm, node, b0, sizeof (*t));
               t->is_slow_path = is_slow_path;
               t->sw_if_index = sw_if_index0;
@@ -1940,8 +1940,8 @@ snat_in2out_node_fn_inline (vlib_main_t * vm,
       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
     }
 
-  vlib_node_increment_counter (vm, stats_node_index, 
-                               SNAT_IN2OUT_ERROR_IN2OUT_PACKETS, 
+  vlib_node_increment_counter (vm, stats_node_index,
+                               SNAT_IN2OUT_ERROR_IN2OUT_PACKETS,
                                pkts_processed);
   return frame->n_vectors;
 }
@@ -1956,7 +1956,7 @@ snat_in2out_fast_path_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_node) = {
   .function = snat_in2out_fast_path_fn,
-  .name = "snat-in2out",
+  .name = "nat44-in2out",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -1972,7 +1972,7 @@ VLIB_REGISTER_NODE (snat_in2out_node) = {
   .next_nodes = {
     [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
     [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
-    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-slowpath",
+    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
     [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
   },
 };
@@ -1989,7 +1989,7 @@ snat_in2out_output_fast_path_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_output_node) = {
   .function = snat_in2out_output_fast_path_fn,
-  .name = "snat-in2out-output",
+  .name = "nat44-in2out-output",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -2005,7 +2005,7 @@ VLIB_REGISTER_NODE (snat_in2out_output_node) = {
   .next_nodes = {
     [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
     [SNAT_IN2OUT_NEXT_LOOKUP] = "interface-output",
-    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-output-slowpath",
+    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
     [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
   },
 };
@@ -2023,7 +2023,7 @@ snat_in2out_slow_path_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_slowpath_node) = {
   .function = snat_in2out_slow_path_fn,
-  .name = "snat-in2out-slowpath",
+  .name = "nat44-in2out-slowpath",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -2039,7 +2039,7 @@ VLIB_REGISTER_NODE (snat_in2out_slowpath_node) = {
   .next_nodes = {
     [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
     [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
-    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-slowpath",
+    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
     [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
   },
 };
@@ -2057,7 +2057,7 @@ snat_in2out_output_slow_path_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) = {
   .function = snat_in2out_output_slow_path_fn,
-  .name = "snat-in2out-output-slowpath",
+  .name = "nat44-in2out-output-slowpath",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -2073,7 +2073,7 @@ VLIB_REGISTER_NODE (snat_in2out_output_slowpath_node) = {
   .next_nodes = {
     [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
     [SNAT_IN2OUT_NEXT_LOOKUP] = "interface-output",
-    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-output-slowpath",
+    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-output-slowpath",
     [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
   },
 };
@@ -2658,7 +2658,7 @@ snat_det_in2out_node_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_det_in2out_node) = {
   .function = snat_det_in2out_node_fn,
-  .name = "snat-det-in2out",
+  .name = "nat44-det-in2out",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -2681,11 +2681,11 @@ VLIB_REGISTER_NODE (snat_det_in2out_node) = {
 VLIB_NODE_FUNCTION_MULTIARCH (snat_det_in2out_node, snat_det_in2out_node_fn);
 
 /**
- * Get address and port values to be used for packet SNAT translation
+ * Get address and port values to be used for ICMP packet translation
  * and create session if needed
  *
- * @param[in,out] sm             SNAT main
- * @param[in,out] node           SNAT node runtime
+ * @param[in,out] sm             NAT main
+ * @param[in,out] node           NAT node runtime
  * @param[in] thread_index       thread index
  * @param[in,out] b0             buffer containing packet to be translated
  * @param[out] p_proto           protocol used for matching
@@ -3009,7 +3009,7 @@ snat_in2out_worker_handoff_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_worker_handoff_node) = {
   .function = snat_in2out_worker_handoff_fn,
-  .name = "snat-in2out-worker-handoff",
+  .name = "nat44-in2out-worker-handoff",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_worker_handoff_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -3034,7 +3034,7 @@ snat_in2out_output_worker_handoff_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_output_worker_handoff_node) = {
   .function = snat_in2out_output_worker_handoff_fn,
-  .name = "snat-in2out-output-worker-handoff",
+  .name = "nat44-in2out-output-worker-handoff",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_worker_handoff_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -3160,7 +3160,7 @@ snat_hairpin_dst_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_hairpin_dst_node) = {
   .function = snat_hairpin_dst_fn,
-  .name = "snat-hairpin-dst",
+  .name = "nat44-hairpin-dst",
   .vector_size = sizeof (u32),
   .type = VLIB_NODE_TYPE_INTERNAL,
   .n_errors = ARRAY_LEN(snat_in2out_error_strings),
@@ -3240,7 +3240,7 @@ snat_hairpin_src_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_hairpin_src_node) = {
   .function = snat_hairpin_src_fn,
-  .name = "snat-hairpin-src",
+  .name = "nat44-hairpin-src",
   .vector_size = sizeof (u32),
   .type = VLIB_NODE_TYPE_INTERNAL,
   .n_errors = ARRAY_LEN(snat_in2out_error_strings),
@@ -3248,9 +3248,9 @@ VLIB_REGISTER_NODE (snat_hairpin_src_node) = {
   .n_next_nodes = SNAT_HAIRPIN_SRC_N_NEXT,
   .next_nodes = {
      [SNAT_HAIRPIN_SRC_NEXT_DROP] = "error-drop",
-     [SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT] = "snat-in2out-output",
+     [SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT] = "nat44-in2out-output",
      [SNAT_HAIRPIN_SRC_NEXT_INTERFACE_OUTPUT] = "interface-output",
-     [SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT_WH] = "snat-in2out-output-worker-handoff",
+     [SNAT_HAIRPIN_SRC_NEXT_SNAT_IN2OUT_WH] = "nat44-in2out-output-worker-handoff",
   },
 };
 
@@ -3430,23 +3430,23 @@ snat_in2out_fast_static_map_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_in2out_fast_node) = {
   .function = snat_in2out_fast_static_map_fn,
-  .name = "snat-in2out-fast",
+  .name = "nat44-in2out-fast",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_in2out_fast_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  
+
   .n_errors = ARRAY_LEN(snat_in2out_error_strings),
   .error_strings = snat_in2out_error_strings,
 
   .runtime_data_bytes = sizeof (snat_runtime_t),
-  
+
   .n_next_nodes = SNAT_IN2OUT_N_NEXT,
 
   /* edit / add dispositions here */
   .next_nodes = {
     [SNAT_IN2OUT_NEXT_DROP] = "error-drop",
     [SNAT_IN2OUT_NEXT_LOOKUP] = "ip4-lookup",
-    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "snat-in2out-slowpath",
+    [SNAT_IN2OUT_NEXT_SLOW_PATH] = "nat44-in2out-slowpath",
     [SNAT_IN2OUT_NEXT_ICMP_ERROR] = "ip4-icmp-error",
   },
 };
diff --git a/src/plugins/snat/snat.api b/src/plugins/nat/nat.api
index 3c493ddae5b..7245cb078b9 100644
--- a/src/plugins/snat/snat.api
+++ b/src/plugins/nat/nat.api
@@ -13,14 +13,18 @@
  * limitations under the License.
  */
 /**
- * @file snat.api
+ * @file nat.api
  * @brief VPP control-plane API messages.
  *
  * This file defines VPP control-plane API messages which are generally
  * called through a shared memory interface.
  */
 
-/** \brief Add/del S-NAT address range
+/*
+ * Old "snat" APIs, will be deprecated after 17.10
+ */
+
+/** \brief Add/del NAT44 address range
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
@@ -39,7 +43,7 @@ autoreply define snat_add_address_range {
   u8 is_add;
 };
 
-/** \brief Dump S-NAT addresses
+/** \brief Dump NAT44 addresses
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -48,7 +52,7 @@ define snat_address_dump {
   u32 context;
 };
 
-/** \brief S-NAT address details response
+/** \brief NAT44 address details response
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
     @param ip_address - IP address
@@ -61,7 +65,7 @@ define snat_address_details {
   u32 vrf_id;
 };
 
-/** \brief Enable/disable S-NAT feature on the interface
+/** \brief Enable/disable NAT44 feature on the interface
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_add - 1 if add, 0 if delete
@@ -76,7 +80,7 @@ autoreply define snat_interface_add_del_feature {
   u32 sw_if_index;
 };
 
-/** \brief Dump interfaces with S-NAT feature
+/** \brief Dump interfaces with NAT44 feature
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -85,7 +89,7 @@ define snat_interface_dump {
   u32 context;
 };
 
-/** \brief S-NAT interface details response
+/** \brief NAT44 interface details response
     @param context - sender context, to match reply w/ request
     @param is_inside - 1 if inside, 0 if outside
     @param sw_if_index - software index of the interface
@@ -96,7 +100,7 @@ define snat_interface_details {
   u32 sw_if_index;
 };
 
-/** \brief Enable/disbale S-NAT as an interface output feature (postrouting
+/** \brief Enable/disbale NAT44 as an interface output feature (postrouting
            in2out translation)
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
@@ -112,7 +116,7 @@ autoreply define snat_interface_add_del_output_feature {
   u32 sw_if_index;
 };
 
-/** \brief Dump interfaces with S-NAT output feature
+/** \brief Dump interfaces with NAT44 output feature
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -121,7 +125,7 @@ define snat_interface_output_feature_dump {
   u32 context;
 };
 
-/** \brief S-NAT interface with output feature details response
+/** \brief NAT44 interface with output feature details response
     @param context - sender context, to match reply w/ request
     @param is_inside - 1 if inside, 0 if outside
     @param sw_if_index - software index of the interface
@@ -132,7 +136,7 @@ define snat_interface_output_feature_details {
   u32 sw_if_index;
 };
 
-/** \brief Add/delete S-NAT static mapping
+/** \brief Add/delete NAT44 static mapping
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_add - 1 if add, 0 if delete
@@ -163,7 +167,7 @@ autoreply define snat_add_static_mapping {
   u32 vrf_id;
 };
 
-/** \brief Dump S-NAT static mappings
+/** \brief Dump NAT44 static mappings
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -172,7 +176,7 @@ define snat_static_mapping_dump {
   u32 context;
 };
 
-/** \brief S-NAT static mapping details response
+/** \brief NAT44 static mapping details response
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
     @param addr_only - 1 if address only mapping
@@ -221,7 +225,7 @@ define snat_control_ping_reply
   u32 vpe_pid;
 };
 
-/** \brief Show S-NAT plugin startup config
+/** \brief Show NAT plugin startup config
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -231,7 +235,7 @@ define snat_show_config
   u32 context;
 };
 
-/** \brief Show S-NAT plugin startup config reply
+/** \brief Show NAT plugin startup config reply
     @param context - sender context, to match reply w/ request
     @param retval - return code for the request
     @param static_mapping_only - if 1 dynamic translations disabled
@@ -261,10 +265,10 @@ define snat_show_config_reply
   u32 inside_vrf_id;
 };
 
-/** \brief Set S-NAT workers
+/** \brief Set NAT workers
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
-    @param worker_mask - S-NAT workers mask
+    @param worker_mask - NAT workers mask
 */
 autoreply define snat_set_workers {
   u32 client_index;
@@ -272,7 +276,7 @@ autoreply define snat_set_workers {
   u64 worker_mask;
 };
 
-/** \brief Dump S-NAT workers
+/** \brief Dump NAT workers
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -281,7 +285,7 @@ define snat_worker_dump {
   u32 context;
 };
 
-/** \brief S-NAT workers details response
+/** \brief NAT workers details response
     @param context - sender context, to match reply w/ request
     @param worker_index - worker index
     @param lcore_id - lcore ID
@@ -294,7 +298,7 @@ define snat_worker_details {
   u8 name[64];
 };
 
-/** \brief Add/delete S-NAT pool address from specific interfce
+/** \brief Add/delete NAT44 pool address from specific interfce
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_add - 1 if add, 0 if delete
@@ -308,7 +312,7 @@ autoreply define snat_add_del_interface_addr {
   u32 sw_if_index;
 };
 
-/** \brief Dump S-NAT pool addresses interfaces
+/** \brief Dump NAT44 pool addresses interfaces
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -317,7 +321,7 @@ define snat_interface_addr_dump {
   u32 context;
 };
 
-/** \brief S-NAT pool addresses interfaces details response
+/** \brief NAT44 pool addresses interfaces details response
     @param context - sender context, to match reply w/ request
     @param sw_if_index - software index of the interface
 */
@@ -326,7 +330,7 @@ define snat_interface_addr_details {
   u32 sw_if_index;
 };
 
-/** \brief Enable/disable S-NAT IPFIX logging
+/** \brief Enable/disable NAT IPFIX logging
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param domain_id - observation domain ID
@@ -341,7 +345,7 @@ autoreply define snat_ipfix_enable_disable {
   u8 enable;
 };
 
-/** \brief Dump S-NAT users
+/** \brief Dump NAT44 users
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -350,7 +354,7 @@ define snat_user_dump {
   u32 context;
 };
 
-/** \brief S-NAT users response
+/** \brief NAT44 users response
     @param context - sender context, to match reply w/ request
     @vrf_id - VRF ID
     @param is_ip4 - 1 if address type is IPv4
@@ -367,7 +371,7 @@ define snat_user_details {
   u32 nstaticsessions;
 };
 
-/** \brief S-NAT user's sessions
+/** \brief NAT44 user's sessions
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
@@ -382,7 +386,7 @@ define snat_user_session_dump {
   u32 vrf_id;
 };
 
-/** \brief S-NAT user's sessions response
+/** \brief NAT44 user's sessions response
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
     @param outside_ip_address - outside IP address
@@ -409,7 +413,7 @@ define snat_user_session_details {
   u32 total_pkts;
 };
 
-/** \brief Add/delete S-NAT deterministic mapping
+/** \brief Add/delete NAT deterministic mapping
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_add - 1 if add, 0 if delete
@@ -489,7 +493,7 @@ define snat_det_reverse_reply {
   u8 in_addr[16];
 };
 
-/** \brief Dump S-NAT deterministic mappings
+/** \brief Dump NAT deterministic mappings
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
 */
@@ -498,7 +502,7 @@ define snat_det_map_dump {
   u32 context;
 };
 
-/** \brief S-NAT users response
+/** \brief NAT users response
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
     @param in_addr - inside IP address
@@ -564,7 +568,7 @@ define snat_det_get_timeouts_reply {
   u32 icmp;
 };
 
-/** \brief Close CGNAT session by outside address and port
+/** \brief Close deterministic NAT session by outside address and port
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
@@ -583,7 +587,7 @@ autoreply define snat_det_close_session_out {
   u16 ext_port;
 };
 
-/** \brief Close CGNAT session by inside address and port
+/** \brief Close deterministic NAT session by inside address and port
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
@@ -602,7 +606,7 @@ autoreply define snat_det_close_session_in {
   u16 ext_port;
 };
 
-/** \brief Dump S-NAT deterministic sessions
+/** \brief Dump determinstic NAT sessions
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
@@ -615,7 +619,7 @@ define snat_det_session_dump {
   u8 user_addr[16];
 };
 
-/** \brief S-NAT deterministic sessions reply
+/** \brief Deterministic NAT sessions reply
     @param context - sender context, to match reply w/ request
     @param is_ip4 - 1 if address type is IPv4
     @param in_port - inside port
@@ -637,6 +641,618 @@ define snat_det_session_details {
   u32 expire;
 };
 
+/*
+ * Common NAT plugin APIs
+ */
+
+/** \brief Control ping from client to api server request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat_control_ping
+{
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief Control ping from the client to the server response
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param retval - return code for the request
+    @param vpe_pid - the pid of the vpe, returned by the server
+*/
+define nat_control_ping_reply
+{
+  u32 context;
+  i32 retval;
+  u32 client_index;
+  u32 vpe_pid;
+};
+
+/** \brief Show NAT plugin startup config
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat_show_config
+{
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief Show NAT plugin startup config reply
+    @param context - sender context, to match reply w/ request
+    @param retval - return code for the request
+    @param static_mapping_only - if 1 dynamic translations disabled
+    @param static_mapping_connection_tracking - if 1 create session data
+    @param deterministic - if 1 deterministic mapping
+    @param translation_buckets - number of translation hash buckets
+    @param translation_memory_size - translation hash memory size
+    @param user_buckets - number of user hash buckets
+    @param user_memory_size - user hash memory size
+    @param max_translations_per_user - maximum number of translations per user
+    @param outside_vrf_id - outside VRF id
+    @param inside_vrf_id - default inside VRF id
+*/
+define nat_show_config_reply
+{
+  u32 context;
+  i32 retval;
+  u8 static_mapping_only;
+  u8 static_mapping_connection_tracking;
+  u8 deterministic;
+  u32 translation_buckets;
+  u32 translation_memory_size;
+  u32 user_buckets;
+  u32 user_memory_size;
+  u32 max_translations_per_user;
+  u32 outside_vrf_id;
+  u32 inside_vrf_id;
+};
+
+/** \brief Set NAT workers
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param worker_mask - NAT workers mask
+*/
+autoreply define nat_set_workers {
+  u32 client_index;
+  u32 context;
+  u64 worker_mask;
+};
+
+/** \brief Dump NAT workers
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat_worker_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT workers details response
+    @param context - sender context, to match reply w/ request
+    @param worker_index - worker index
+    @param lcore_id - lcore ID
+    @param name - worker name
+*/
+define nat_worker_details {
+  u32 context;
+  u32 worker_index;
+  u32 lcore_id;
+  u8 name[64];
+};
+
+/** \brief Enable/disable NAT IPFIX logging
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param domain_id - observation domain ID
+    @param src_port - source port number
+    @param enable - 1 if enable, 0 if disable
+*/
+autoreply define nat_ipfix_enable_disable {
+  u32 client_index;
+  u32 context;
+  u32 domain_id;
+  u16 src_port;
+  u8 enable;
+};
+
+/*
+ * NAT44 APIs
+ */
+
+/** \brief Add/del NAT44 address range
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param first_ip_address - first IPv4 address
+    @param last_ip_address - last IPv4 address
+    @param vrf_id - VRF id of tenant, ~0 means independent of VRF
+    @param is_add - 1 if add, 0 if delete
+*/
+autoreply define nat44_add_del_address_range {
+  u32 client_index;
+  u32 context;
+  u8 first_ip_address[4];
+  u8 last_ip_address[4];
+  u32 vrf_id;
+  u8 is_add;
+};
+
+/** \brief Dump NAT44 addresses
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat44_address_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT44 address details response
+    @param context - sender context, to match reply w/ request
+    @param ip_address - IPv4 address
+    @param vrf_id - VRF id of tenant, ~0 means independent of VRF
+*/
+define nat44_address_details {
+  u32 context;
+  u8 ip_address[4];
+  u32 vrf_id;
+};
+
+/** \brief Enable/disable NAT44 feature on the interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - 1 if add, 0 if delete
+    @param is_inside - 1 if inside, 0 if outside
+    @param sw_if_index - software index of the interface
+*/
+autoreply define nat44_interface_add_del_feature {
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 is_inside;
+  u32 sw_if_index;
+};
+
+/** \brief Dump interfaces with NAT44 feature
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat44_interface_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT44 interface details response
+    @param context - sender context, to match reply w/ request
+    @param is_inside - 1 if inside, 0 if outside
+    @param sw_if_index - software index of the interface
+*/
+define nat44_interface_details {
+  u32 context;
+  u8 is_inside;
+  u32 sw_if_index;
+};
+
+/** \brief Enable/disbale NAT44 as an interface output feature (postrouting
+           in2out translation)
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - 1 if add, 0 if delete
+    @param is_inside - 1 if inside, 0 if outside
+    @param sw_if_index - software index of the interface
+*/
+autoreply define nat44_interface_add_del_output_feature {
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 is_inside;
+  u32 sw_if_index;
+};
+
+/** \brief Dump interfaces with NAT44 output feature
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat44_interface_output_feature_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT44 interface with output feature details response
+    @param context - sender context, to match reply w/ request
+    @param is_inside - 1 if inside, 0 if outside
+    @param sw_if_index - software index of the interface
+*/
+define nat44_interface_output_feature_details {
+  u32 context;
+  u8 is_inside;
+  u32 sw_if_index;
+};
+
+/** \brief Add/delete NAT44 static mapping
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - 1 if add, 0 if delete
+    @param addr_only - 1 if address only mapping
+    @param local_ip_address - local IPv4 address
+    @param external_ip_address - external IPv4 address
+    @param protocol - IP protocol
+    @param local_port - local port number
+    @param external_port - external port number
+    @param external_sw_if_index - external interface (if set
+                                  external_ip_address is ignored, ~0 means not
+                                  used)
+    @param vfr_id - VRF ID
+*/
+autoreply define nat44_add_del_static_mapping {
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 addr_only;
+  u8 local_ip_address[4];
+  u8 external_ip_address[4];
+  u8 protocol;
+  u16 local_port;
+  u16 external_port;
+  u32 external_sw_if_index;
+  u32 vrf_id;
+};
+
+/** \brief Dump NAT44 static mappings
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat44_static_mapping_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT44 static mapping details response
+    @param context - sender context, to match reply w/ request
+    @param addr_only - 1 if address only mapping
+    @param local_ip_address - local IPv4 address
+    @param external_ip_address - external IPv4 address
+    @param protocol - IP protocol
+    @param local_port - local port number
+    @param external_port - external port number
+    @param external_sw_if_index - external interface
+    @param vfr_id - VRF ID
+*/
+define nat44_static_mapping_details {
+  u32 context;
+  u8 addr_only;
+  u8 local_ip_address[4];
+  u8 external_ip_address[4];
+  u8 protocol;
+  u16 local_port;
+  u16 external_port;
+  u32 external_sw_if_index;
+  u32 vrf_id;
+};
+
+/** \brief Add/delete NAT44 pool address from specific interfce
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - 1 if add, 0 if delete
+    @param sw_if_index - software index of the interface
+*/
+autoreply define nat44_add_del_interface_addr {
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 is_inside;
+  u32 sw_if_index;
+};
+
+/** \brief Dump NAT44 pool addresses interfaces
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat44_interface_addr_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT44 pool addresses interfaces details response
+    @param context - sender context, to match reply w/ request
+    @param sw_if_index - software index of the interface
+*/
+define nat44_interface_addr_details {
+  u32 context;
+  u32 sw_if_index;
+};
+
+/** \brief Dump NAT44 users
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat44_user_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT44 users response
+    @param context - sender context, to match reply w/ request
+    @vrf_id - VRF ID
+    @param ip_adress - IPv4 address
+    @param nsessions - number of dynamic sessions
+    @param nstaticsessions - number of static sessions
+*/
+define nat44_user_details {
+  u32 context;
+  u32 vrf_id;
+  u8 ip_address[4];
+  u32 nsessions;
+  u32 nstaticsessions;
+};
+
+/** \brief NAT44 user's sessions
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_ip4 - 1 if address type is IPv4
+    @param user_ip - IP address of the user to dump
+    @param vrf_id - VRF_ID
+*/
+define nat44_user_session_dump {
+  u32 client_index;
+  u32 context;
+  u8 ip_address[4];
+  u32 vrf_id;
+};
+
+/** \brief NAT44 user's sessions response
+    @param context - sender context, to match reply w/ request
+    @param outside_ip_address - outside IPv4 address
+    @param outside_port - outside port
+    @param inside_ip_address - inside IPv4 address
+    @param inside_port - inside port
+    @param protocol - protocol
+    @param is_static - 1 if session is static
+    @param last_heard - last heard timer
+    @param total_bytes - count of bytes sent through session
+    @param total_pkts - count of pakets sent through session
+*/
+define nat44_user_session_details {
+  u32 context;
+  u8 outside_ip_address[4];
+  u16 outside_port;
+  u8 inside_ip_address[4];
+  u16 inside_port;
+  u16 protocol;
+  u8 is_static;
+  u64 last_heard;
+  u64 total_bytes;
+  u32 total_pkts;
+};
+
+/*
+ * Deterministic NAT (CGN) APIs
+ */
+
+/** \brief Add/delete NAT deterministic mapping
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_add - 1 if add, 0 if delete
+    @param is_nat44 - 1 if NAT44
+    @param in_addr - inside IP address
+    @param in_plen - inside IP address prefix length
+    @param out_addr - outside IPv4 address
+    @param out_addr - outside IPv4 address prefix length
+*/
+autoreply define nat_det_add_del_map {
+  u32 client_index;
+  u32 context;
+  u8 is_add;
+  u8 is_nat44;
+  u8 addr_only;
+  u8 in_addr[16];
+  u8 in_plen;
+  u8 out_addr[4];
+  u8 out_plen;
+};
+
+/** \brief Get outside address and port range from inside address
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_nat44 - 1 if NAT44
+    @param in_addr - inside IP address
+*/
+define nat_det_forward {
+  u32 client_index;
+  u32 context;
+  u8 is_nat44;
+  u8 in_addr[16];
+};
+
+/** \brief Get outside address and port range from inside address
+    @param context - sender context, to match reply w/ request
+    @param retval - return code
+    @param out_port_lo - outside port range start
+    @param out_port_hi - outside port range end
+    @param out_addr - outside IPv4 address
+*/
+define nat_det_forward_reply {
+  u32 context;
+  i32 retval;
+  u16 out_port_lo;
+  u16 out_port_hi;
+  u8 out_addr[4];
+};
+
+/** \brief Get inside address from outside address and port
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param out_port - outside port
+    @param out_addr - outside IPv4 address
+*/
+define nat_det_reverse {
+  u32 client_index;
+  u32 context;
+  u16 out_port;
+  u8 out_addr[4];
+};
+
+/** \brief Get inside address from outside address and port reply
+    @param context - sender context, to match reply w/ request
+    @param retval - return code
+    @param is_nat44 - 1 if NAT44
+    @param in_addr - inside IP address
+*/
+define nat_det_reverse_reply {
+  u32 context;
+  i32 retval;
+  u8 is_nat44;
+  u8 in_addr[16];
+};
+
+/** \brief Dump NAT deterministic mappings
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat_det_map_dump {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief NAT users response
+    @param context - sender context, to match reply w/ request
+    @param is_nat44 - 1 if NAT44
+    @param in_addr - inside IP address
+    @param in_plen - inside IP address prefix length
+    @param out_addr - outside IPv4 address
+    @param out_plen - outside IPv4 address prefix length
+    @param sharing_ratio - outside to inside address sharing ratio
+    @param ports_per_host - number of ports available to a host
+    @param ses_num - number of sessions belonging to this mapping
+*/
+define nat_det_map_details {
+  u32 context;
+  u8 is_nat44;
+  u8 in_addr[16];
+  u8 in_plen;
+  u8 out_addr[4];
+  u8 out_plen;
+  u32 sharing_ratio;
+  u16 ports_per_host;
+  u32 ses_num;
+};
+
+/** \brief Set values of timeouts for deterministic NAT (seconds, 0 = default)
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param udp - UDP timeout (default 300sec)
+    @param tcp_established - TCP established timeout (default 7440sec)
+    @param tcp_transitory - TCP transitory timeout (default 240sec)
+    @param icmp - ICMP timeout (default 60sec)
+*/
+autoreply define nat_det_set_timeouts {
+  u32 client_index;
+  u32 context;
+  u32 udp;
+  u32 tcp_established;
+  u32 tcp_transitory;
+  u32 icmp;
+};
+
+/** \brief Get values of timeouts for deterministic NAT (seconds)
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define nat_det_get_timeouts {
+  u32 client_index;
+  u32 context;
+};
+
+/** \brief Get values of timeouts for deterministic NAT reply
+    @param context - sender context, to match reply w/ request
+    @param retval - return code
+    @param udp - UDP timeout (default 300sec)
+    @param tcp_established - TCP established timeout (default 7440sec)
+    @param tcp_transitory - TCP transitory timeout (default 240sec)
+    @param icmp - ICMP timeout (default 60sec)
+*/
+define nat_det_get_timeouts_reply {
+  u32 context;
+  i32 retval;
+  u32 udp;
+  u32 tcp_established;
+  u32 tcp_transitory;
+  u32 icmp;
+};
+
+/** \brief Close deterministic NAT session by outside address and port
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param out_addr - outside IPv4 address
+    @param out_port - outside port
+    @param ext_addr - external host IPv4 address
+    @param ext_port - external host port
+*/
+autoreply define nat_det_close_session_out {
+  u32 client_index;
+  u32 context;
+  u8 out_addr[4];
+  u16 out_port;
+  u8 ext_addr[4];
+  u16 ext_port;
+};
+
+/** \brief Close deterministic NAT session by inside address and port
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_nat44 - 1 if NAT44
+    @param in_addr - inside IP address
+    @param in_port - inside port
+    @param ext_addr - external host IP address
+    @param ext_port - external host port
+*/
+autoreply define nat_det_close_session_in {
+  u32 client_index;
+  u32 context;
+  u8 is_nat44;
+  u8 in_addr[16];
+  u16 in_port;
+  u8 ext_addr[16];
+  u16 ext_port;
+};
+
+/** \brief Dump determinstic NAT sessions
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param is_nat44 - 1 if NAT44
+    @param user_addr - address of an inside user whose sessions to dump
+*/
+define nat_det_session_dump {
+  u32 client_index;
+  u32 context;
+  u8 is_nat44;
+  u8 user_addr[16];
+};
+
+/** \brief Deterministic NAT sessions reply
+    @param context - sender context, to match reply w/ request
+    @param in_port - inside port
+    @param ext_addr - external host address
+    @param ext_port - external host port
+    @param out_port - outside NAT port
+    @param state - session state
+    @param expire - session expiration timestamp
+*/
+define nat_det_session_details {
+  u32 client_index;
+  u32 context;
+  u16 in_port;
+  u8 ext_addr[4];
+  u16 ext_port;
+  u16 out_port;
+  u8 state;
+  u32 expire;
+};
+
+/*
+ * NAT64 APIs
+ */
+
 /** \brief Add/delete address range to NAT64 pool
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request
diff --git a/src/plugins/snat/snat.c b/src/plugins/nat/nat.c
index 315cec8a65b..ac39be956a8 100644
--- a/src/plugins/snat/snat.c
+++ b/src/plugins/nat/nat.c
@@ -19,10 +19,10 @@
 #include <vnet/ip/ip.h>
 #include <vnet/ip/ip4.h>
 #include <vnet/plugin/plugin.h>
-#include <snat/snat.h>
-#include <snat/snat_ipfix_logging.h>
-#include <snat/snat_det.h>
-#include <snat/nat64.h>
+#include <nat/nat.h>
+#include <nat/nat_ipfix_logging.h>
+#include <nat/nat_det.h>
+#include <nat/nat64.h>
 #include <vnet/fib/fib_table.h>
 #include <vnet/fib/ip4_fib.h>
 
@@ -34,64 +34,64 @@ snat_main_t snat_main;
 /* Hook up input features */
 VNET_FEATURE_INIT (ip4_snat_in2out, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-in2out",
-  .runs_before = VNET_FEATURES ("snat-out2in"),
+  .node_name = "nat44-in2out",
+  .runs_before = VNET_FEATURES ("nat44-out2in"),
 };
 VNET_FEATURE_INIT (ip4_snat_out2in, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-out2in",
+  .node_name = "nat44-out2in",
   .runs_before = VNET_FEATURES ("ip4-lookup"),
 };
 VNET_FEATURE_INIT (ip4_snat_det_in2out, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-det-in2out",
-  .runs_before = VNET_FEATURES ("snat-det-out2in"),
+  .node_name = "nat44-det-in2out",
+  .runs_before = VNET_FEATURES ("nat44-det-out2in"),
 };
 VNET_FEATURE_INIT (ip4_snat_det_out2in, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-det-out2in",
+  .node_name = "nat44-det-out2in",
   .runs_before = VNET_FEATURES ("ip4-lookup"),
 };
 VNET_FEATURE_INIT (ip4_snat_in2out_worker_handoff, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-in2out-worker-handoff",
-  .runs_before = VNET_FEATURES ("snat-out2in-worker-handoff"),
+  .node_name = "nat44-in2out-worker-handoff",
+  .runs_before = VNET_FEATURES ("nat44-out2in-worker-handoff"),
 };
 VNET_FEATURE_INIT (ip4_snat_out2in_worker_handoff, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-out2in-worker-handoff",
+  .node_name = "nat44-out2in-worker-handoff",
   .runs_before = VNET_FEATURES ("ip4-lookup"),
 };
 VNET_FEATURE_INIT (ip4_snat_in2out_fast, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-in2out-fast",
-  .runs_before = VNET_FEATURES ("snat-out2in-fast"),
+  .node_name = "nat44-in2out-fast",
+  .runs_before = VNET_FEATURES ("nat44-out2in-fast"),
 };
 VNET_FEATURE_INIT (ip4_snat_out2in_fast, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-out2in-fast",
+  .node_name = "nat44-out2in-fast",
   .runs_before = VNET_FEATURES ("ip4-lookup"),
 };
 VNET_FEATURE_INIT (ip4_snat_hairpin_dst, static) = {
   .arc_name = "ip4-unicast",
-  .node_name = "snat-hairpin-dst",
+  .node_name = "nat44-hairpin-dst",
   .runs_before = VNET_FEATURES ("ip4-lookup"),
 };
 
 /* Hook up output features */
 VNET_FEATURE_INIT (ip4_snat_in2out_output, static) = {
   .arc_name = "ip4-output",
-  .node_name = "snat-in2out-output",
+  .node_name = "nat44-in2out-output",
   .runs_before = VNET_FEATURES ("interface-output"),
 };
 VNET_FEATURE_INIT (ip4_snat_in2out_output_worker_handoff, static) = {
   .arc_name = "ip4-output",
-  .node_name = "snat-in2out-output-worker-handoff",
+  .node_name = "nat44-in2out-output-worker-handoff",
   .runs_before = VNET_FEATURES ("interface-output"),
 };
 VNET_FEATURE_INIT (ip4_snat_hairpin_src, static) = {
   .arc_name = "ip4-output",
-  .node_name = "snat-hairpin-src",
+  .node_name = "nat44-hairpin-src",
   .runs_before = VNET_FEATURES ("interface-output"),
 };
 
@@ -210,20 +210,20 @@ static int is_snat_address_used_in_static_mapping (snat_main_t *sm,
 void increment_v4_address (ip4_address_t * a)
 {
   u32 v;
-  
+
   v = clib_net_to_host_u32(a->as_u32) + 1;
   a->as_u32 = clib_host_to_net_u32(v);
 }
 
-static void 
-snat_add_static_mapping_when_resolved (snat_main_t * sm, 
-                                       ip4_address_t l_addr, 
-                                       u16 l_port, 
-                                       u32 sw_if_index, 
-                                       u16 e_port, 
+static void
+snat_add_static_mapping_when_resolved (snat_main_t * sm,
+                                       ip4_address_t l_addr,
+                                       u16 l_port,
+                                       u32 sw_if_index,
+                                       u16 e_port,
                                        u32 vrf_id,
                                        snat_protocol_t proto,
-                                       int addr_only,  
+                                       int addr_only,
                                        int is_add)
 {
   snat_static_map_resolve_t *rp;
@@ -275,13 +275,13 @@ int snat_add_static_mapping(ip4_address_t l_addr, ip4_address_t e_addr,
       ip4_address_t * first_int_addr;
 
       /* Might be already set... */
-      first_int_addr = ip4_interface_first_address 
+      first_int_addr = ip4_interface_first_address
         (sm->ip4_main, sw_if_index, 0 /* just want the address*/);
 
       /* DHCP resolution required? */
       if (first_int_addr == 0)
         {
-          snat_add_static_mapping_when_resolved 
+          snat_add_static_mapping_when_resolved
             (sm, l_addr, l_port, sw_if_index, e_port, vrf_id, proto,
              addr_only,  is_add);
           return 0;
@@ -736,15 +736,15 @@ int snat_interface_add_del (u32 sw_if_index, u8 is_inside, int is_del)
   snat_det_map_t * dm;
 
   if (sm->static_mapping_only && !(sm->static_mapping_connection_tracking))
-    feature_name = is_inside ?  "snat-in2out-fast" : "snat-out2in-fast";
+    feature_name = is_inside ?  "nat44-in2out-fast" : "nat44-out2in-fast";
   else
     {
       if (sm->num_workers > 1 && !sm->deterministic)
-        feature_name = is_inside ?  "snat-in2out-worker-handoff" : "snat-out2in-worker-handoff";
+        feature_name = is_inside ?  "nat44-in2out-worker-handoff" : "nat44-out2in-worker-handoff";
       else if (sm->deterministic)
-        feature_name = is_inside ?  "snat-det-in2out" : "snat-det-out2in";
+        feature_name = is_inside ?  "nat44-det-in2out" : "nat44-det-out2in";
       else
-        feature_name = is_inside ?  "snat-in2out" : "snat-out2in";
+        feature_name = is_inside ?  "nat44-in2out" : "nat44-out2in";
     }
 
   vnet_feature_enable_disable ("ip4-unicast", feature_name, sw_if_index,
@@ -815,26 +815,26 @@ int snat_interface_add_del_output_feature (u32 sw_if_index,
 
   if (is_inside)
     {
-      vnet_feature_enable_disable ("ip4-unicast", "snat-hairpin-dst",
+      vnet_feature_enable_disable ("ip4-unicast", "nat44-hairpin-dst",
                                    sw_if_index, !is_del, 0, 0);
-      vnet_feature_enable_disable ("ip4-output", "snat-hairpin-src",
+      vnet_feature_enable_disable ("ip4-output", "nat44-hairpin-src",
                                    sw_if_index, !is_del, 0, 0);
       goto fq;
     }
 
   if (sm->num_workers > 1)
     {
-      vnet_feature_enable_disable ("ip4-unicast", "snat-out2in-worker-handoff",
+      vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in-worker-handoff",
                                    sw_if_index, !is_del, 0, 0);
       vnet_feature_enable_disable ("ip4-output",
-                                   "snat-in2out-output-worker-handoff",
+                                   "nat44-in2out-output-worker-handoff",
                                    sw_if_index, !is_del, 0, 0);
     }
   else
     {
-      vnet_feature_enable_disable ("ip4-unicast", "snat-out2in", sw_if_index,
+      vnet_feature_enable_disable ("ip4-unicast", "nat44-out2in", sw_if_index,
                                    !is_del, 0, 0);
-      vnet_feature_enable_disable ("ip4-output", "snat-in2out-output",
+      vnet_feature_enable_disable ("ip4-output", "nat44-in2out-output",
                                    sw_if_index, !is_del, 0, 0);
     }
 
@@ -997,13 +997,13 @@ static clib_error_t * snat_init (vlib_main_t * vm)
 
 VLIB_INIT_FUNCTION (snat_init);
 
-void snat_free_outside_address_and_port (snat_main_t * sm, 
-                                         snat_session_key_t * k, 
+void snat_free_outside_address_and_port (snat_main_t * sm,
+                                         snat_session_key_t * k,
                                          u32 address_index)
 {
   snat_address_t *a;
   u16 port_host_byte_order = clib_net_to_host_u16 (k->port);
-  
+
   ASSERT (address_index < vec_len (sm->addresses));
 
   a = sm->addresses + address_index;
@@ -1024,12 +1024,12 @@ void snat_free_outside_address_and_port (snat_main_t * sm,
       clib_warning("unknown_protocol");
       return;
     }
-}  
+}
 
 /**
- * @brief Match SNAT static mapping.
+ * @brief Match NAT44 static mapping.
  *
- * @param sm          SNAT main.
+ * @param sm          NAT main.
  * @param match       Address and port to match.
  * @param mapping     External or local address and port of the matched mapping.
  * @param by_external If 0 match by local address otherwise match by external
@@ -1199,7 +1199,7 @@ add_address_command_fn (vlib_main_t * vm,
 
   start_host_order = clib_host_to_net_u32 (start_addr.as_u32);
   end_host_order = clib_host_to_net_u32 (end_addr.as_u32);
-  
+
   if (end_host_order < start_host_order)
     {
       error = clib_error_return (0, "end address less than start address");
@@ -1213,7 +1213,7 @@ add_address_command_fn (vlib_main_t * vm,
                   format_ip4_address, &start_addr,
                   format_ip4_address, &end_addr,
                   count);
-  
+
   this_addr = start_addr;
 
   for (i = 0; i < count; i++)
@@ -1245,8 +1245,8 @@ done:
 }
 
 VLIB_CLI_COMMAND (add_address_command, static) = {
-  .path = "snat add address",
-  .short_help = "snat add addresses <ip4-range-start> [- <ip4-range-end>] "
+  .path = "nat44 add address",
+  .short_help = "nat44 add addresses <ip4-range-start> [- <ip4-range-end>] "
                 "[tenant-vrf <vrf-id>] [del]",
   .function = add_address_command_fn,
 };
@@ -1365,9 +1365,9 @@ done:
 }
 
 VLIB_CLI_COMMAND (set_interface_snat_command, static) = {
-  .path = "set interface snat",
+  .path = "set interface nat44",
   .function = snat_feature_command_fn,
-  .short_help = "set interface snat in <intfc> out <intfc> [output-feature] "
+  .short_help = "set interface nat44 in <intfc> out <intfc> [output-feature] "
                 "[del]",
 };
 
@@ -1503,18 +1503,18 @@ done:
  * to to the local network host.
  * To create static mapping between local host address 10.0.0.3 port 6303 and
  * external address 4.4.4.4 port 3606 for TCP protocol use:
- *  vpp# snat add static mapping local tcp 10.0.0.3 6303 external 4.4.4.4 3606
- * If not runnig "static mapping only" S-NAT plugin mode use before:
- *  vpp# snat add address 4.4.4.4
+ *  vpp# nat44 add static mapping local tcp 10.0.0.3 6303 external 4.4.4.4 3606
+ * If not runnig "static mapping only" NAT plugin mode use before:
+ *  vpp# nat44 add address 4.4.4.4
  * To create static mapping between local and external address use:
- *  vpp# snat add static mapping local 10.0.0.3 external 4.4.4.4
+ *  vpp# nat44 add static mapping local 10.0.0.3 external 4.4.4.4
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (add_static_mapping_command, static) = {
-  .path = "snat add static mapping",
+  .path = "nat44 add static mapping",
   .function = add_static_mapping_command_fn,
   .short_help =
-    "snat add static mapping local tcp|udp|icmp <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]",
+    "nat44 add static mapping local tcp|udp|icmp <addr> [<port>] external <addr> [<port>] [vrf <table-id>] [del]",
 };
 
 static clib_error_t *
@@ -1575,15 +1575,15 @@ done:
 /*?
  * @cliexpar
  * @cliexstart{set snat workers}
- * Set SNAT workers if 2 or more workers available, use:
+ * Set NAT workers if 2 or more workers available, use:
  *  vpp# set snat workers 0-2,5
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (set_workers_command, static) = {
-  .path = "set snat workers",
+  .path = "set nat workers",
   .function = set_workers_command_fn,
   .short_help =
-    "set snat workers <workers-list>",
+    "set nat workers <workers-list>",
 };
 
 static clib_error_t *
@@ -1635,16 +1635,16 @@ done:
 /*?
  * @cliexpar
  * @cliexstart{snat ipfix logging}
- * To enable SNAT IPFIX logging use:
- *  vpp# snat ipfix logging
+ * To enable NAT IPFIX logging use:
+ *  vpp# nat ipfix logging
  * To set IPFIX exporter use:
  *  vpp# set ipfix exporter collector 10.10.10.3 src 10.10.10.1
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (snat_ipfix_logging_enable_disable_command, static) = {
-  .path = "snat ipfix logging",
+  .path = "nat ipfix logging",
   .function = snat_ipfix_logging_enable_disable_command_fn,
-  .short_help = "snat ipfix logging [domain <domain-id>] [src-port <port>] [disable]",
+  .short_help = "nat ipfix logging [domain <domain-id>] [src-port <port>] [disable]",
 };
 
 static u32
@@ -1862,7 +1862,7 @@ snat_config (vlib_main_t * vm, unformat_input_t * input)
   return 0;
 }
 
-VLIB_CONFIG_FUNCTION (snat_config, "snat");
+VLIB_CONFIG_FUNCTION (snat_config, "nat");
 
 u8 * format_snat_session_state (u8 * s, va_list * args)
 {
@@ -2067,18 +2067,18 @@ show_snat_command_fn (vlib_main_t * vm,
   if (sm->static_mapping_only)
     {
       if (sm->static_mapping_connection_tracking)
-        vlib_cli_output (vm, "SNAT mode: static mapping only connection "
+        vlib_cli_output (vm, "NAT plugin mode: static mapping only connection "
                          "tracking");
       else
-        vlib_cli_output (vm, "SNAT mode: static mapping only");
+        vlib_cli_output (vm, "NAT plugin mode: static mapping only");
     }
   else if (sm->deterministic)
     {
-      vlib_cli_output (vm, "SNAT mode: deterministic mapping");
+      vlib_cli_output (vm, "NAT plugin mode: deterministic mapping");
     }
   else
     {
-      vlib_cli_output (vm, "SNAT mode: dynamic translations enabled");
+      vlib_cli_output (vm, "NAT plugin mode: dynamic translations enabled");
     }
 
   if (verbose > 0)
@@ -2100,7 +2100,7 @@ show_snat_command_fn (vlib_main_t * vm,
 
       if (vec_len (sm->auto_add_sw_if_indices))
         {
-          vlib_cli_output (vm, "SNAT pool addresses interfaces:");
+          vlib_cli_output (vm, "NAT44 pool addresses interfaces:");
           vec_foreach (sw_if_index, sm->auto_add_sw_if_indices)
             {
               vlib_cli_output (vm, "%U", format_vnet_sw_interface_name, vnm,
@@ -2253,8 +2253,8 @@ show_snat_command_fn (vlib_main_t * vm,
 }
 
 VLIB_CLI_COMMAND (show_snat_command, static) = {
-    .path = "show snat",
-    .short_help = "show snat",
+    .path = "show nat44",
+    .short_help = "show nat44",
     .function = show_snat_command_fn,
 };
 
@@ -2372,7 +2372,7 @@ int snat_add_interface_address (snat_main_t *sm, u32 sw_if_index, int is_del)
           return 0;
         }
     }
-  
+
   if (is_del)
     return VNET_API_ERROR_NO_SUCH_ENTRY;
 
@@ -2437,8 +2437,8 @@ done:
 }
 
 VLIB_CLI_COMMAND (snat_add_interface_address_command, static) = {
-    .path = "snat add interface address",
-    .short_help = "snat add interface address <interface> [del]",
+    .path = "nat44 add interface address",
+    .short_help = "nat44 add interface address <interface> [del]",
     .function = snat_add_interface_address_command_fn,
 };
 
@@ -2499,12 +2499,12 @@ done:
  * CGN deployments.
  * To create deterministic mapping between inside network 10.0.0.0/18 and
  * outside network 1.1.1.0/30 use:
- * # vpp# snat deterministic add in 10.0.0.0/18 out 1.1.1.0/30
+ * # vpp# nat44 deterministic add in 10.0.0.0/18 out 1.1.1.0/30
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (snat_det_map_command, static) = {
-    .path = "snat deterministic add",
-    .short_help = "snat deterministic add in <addr>/<plen> out <addr>/<plen> [del]",
+    .path = "nat44 deterministic add",
+    .short_help = "nat44 deterministic add in <addr>/<plen> out <addr>/<plen> [del]",
     .function = snat_det_map_command_fn,
 };
 
@@ -2560,13 +2560,13 @@ done:
  * Return outside address and port range from inside address for deterministic
  * NAT.
  * To obtain outside address and port of inside host use:
- *  vpp# snat deterministic forward 10.0.0.2
+ *  vpp# nat44 deterministic forward 10.0.0.2
  *  1.1.1.0:<1054-1068>
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (snat_det_forward_command, static) = {
-    .path = "snat deterministic forward",
-    .short_help = "snat deterministic forward <addr>",
+    .path = "nat44 deterministic forward",
+    .short_help = "nat44 deterministic forward <addr>",
     .function = snat_det_forward_command_fn,
 };
 
@@ -2625,13 +2625,13 @@ done:
  * @cliexstart{snat deterministic reverse}
  * Return inside address from outside address and port for deterministic NAT.
  * To obtain inside host address from outside address and port use:
- *  #vpp snat deterministic reverse 1.1.1.1:1276
+ *  #vpp nat44 deterministic reverse 1.1.1.1:1276
  *  10.0.16.16
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (snat_det_reverse_command, static) = {
-    .path = "snat deterministic reverse",
-    .short_help = "snat deterministic reverse <addr>:<port>",
+    .path = "nat44 deterministic reverse",
+    .short_help = "nat44 deterministic reverse <addr>:<port>",
     .function = snat_det_reverse_command_fn,
 };
 
@@ -2687,17 +2687,17 @@ done:
  * @cliexpar
  * @cliexstart{set snat deterministic timeout}
  * Set values of timeouts for deterministic NAT (in seconds), use:
- *  vpp# set snat deterministic timeout udp 120 tcp-established 7500
+ *  vpp# set nat44 deterministic timeout udp 120 tcp-established 7500
  *  tcp-transitory 250 icmp 90
  * To reset default values use:
- *  vpp# set snat deterministic timeout reset
+ *  vpp# set nat44 deterministic timeout reset
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (set_timeout_command, static) = {
-  .path = "set snat deterministic timeout",
+  .path = "set nat44 deterministic timeout",
   .function = set_timeout_command_fn,
   .short_help =
-    "set snat deterministic timeout [udp <sec> | tcp-established <sec> "
+    "set nat44 deterministic timeout [udp <sec> | tcp-established <sec> "
     "tcp-transitory <sec> | icmp <sec> | reset]",
 };
 
@@ -2762,12 +2762,12 @@ done:
  * @cliexstart{snat deterministic close session out}
  * Close session using outside ip address and port
  * and external ip address and port, use:
- *  vpp# snat deterministic close session out 1.1.1.1:1276 2.2.2.2:2387
+ *  vpp# nat44 deterministic close session out 1.1.1.1:1276 2.2.2.2:2387
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (snat_det_close_sesion_out_command, static) = {
-  .path = "snat deterministic close session out",
-  .short_help = "snat deterministic close session out "
+  .path = "nat44 deterministic close session out",
+  .short_help = "nat44 deterministic close session out "
                 "<out_addr>:<out_port> <ext_addr>:<ext_port>",
   .function = snat_det_close_session_out_fn,
 };
@@ -2831,12 +2831,12 @@ done:
  * @cliexstart{snat deterministic close_session_in}
  * Close session using inside ip address and port
  * and external ip address and port, use:
- *  vpp# snat deterministic close session in 3.3.3.3:3487 2.2.2.2:2387
+ *  vpp# nat44 deterministic close session in 3.3.3.3:3487 2.2.2.2:2387
  * @cliexend
 ?*/
 VLIB_CLI_COMMAND (snat_det_close_session_in_command, static) = {
-  .path = "snat deterministic close session in",
-  .short_help = "snat deterministic close session in "
+  .path = "nat44 deterministic close session in",
+  .short_help = "nat44 deterministic close session in "
                 "<in_addr>:<in_port> <ext_addr>:<ext_port>",
   .function = snat_det_close_session_in_fn,
 };
diff --git a/src/plugins/snat/snat.h b/src/plugins/nat/nat.h
index aa0f82fc9df..04c466dc6f5 100644
--- a/src/plugins/snat/snat.h
+++ b/src/plugins/nat/nat.h
@@ -1,6 +1,6 @@
 
 /*
- * snat.h - simple nat definitions
+ * nat.h - NAT plugin definitions
  *
  * Copyright (c) 2016 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,8 +15,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef __included_snat_h__
-#define __included_snat_h__
+#ifndef __included_nat_h__
+#define __included_nat_h__
 
 #include <vnet/vnet.h>
 #include <vnet/ip/ip.h>
@@ -41,9 +41,9 @@
 
 /* Key */
 typedef struct {
-  union 
+  union
   {
-    struct 
+    struct
     {
       ip4_address_t addr;
       u16 port;
@@ -156,7 +156,7 @@ typedef CLIB_PACKED(struct {
   f64 last_heard;               /* 44-51 */
 
   u64 total_bytes;              /* 52-59 */
-  
+
   u32 total_pkts;               /* 60-63 */
 
   /* Outside address */
@@ -418,12 +418,12 @@ typedef struct {
 */
 #define snat_is_unk_proto_session(s) s->flags & SNAT_SESSION_FLAG_UNKNOWN_PROTO
 
-/* 
+/*
  * Why is this here? Because we don't need to touch this layer to
  * simply reply to an icmp. We need to change id to a unique
  * value to NAT an echo request/reply.
  */
-   
+
 typedef struct {
   u16 identifier;
   u16 sequence;
@@ -538,4 +538,4 @@ is_interface_addr(snat_main_t *sm, vlib_node_runtime_t *node, u32 sw_if_index0,
     return 0;
 }
 
-#endif /* __included_snat_h__ */
+#endif /* __included_nat_h__ */
diff --git a/src/plugins/snat/nat64.c b/src/plugins/nat/nat64.c
index bd915b590d0..b04901fade4 100644
--- a/src/plugins/snat/nat64.c
+++ b/src/plugins/nat/nat64.c
@@ -17,8 +17,8 @@
  * @brief NAT64 implementation
  */
 
-#include <snat/nat64.h>
-#include <snat/nat64_db.h>
+#include <nat/nat64.h>
+#include <nat/nat64_db.h>
 #include <vnet/fib/ip4_fib.h>
 
 
diff --git a/src/plugins/snat/nat64.h b/src/plugins/nat/nat64.h
index 771b9075405..68224cab013 100644
--- a/src/plugins/snat/nat64.h
+++ b/src/plugins/nat/nat64.h
@@ -19,8 +19,8 @@
 #ifndef __included_nat64_h__
 #define __included_nat64_h__
 
-#include <snat/snat.h>
-#include <snat/nat64_db.h>
+#include <nat/nat.h>
+#include <nat/nat64_db.h>
 
 #define foreach_nat64_tcp_ses_state            \
   _(0, CLOSED, "closed")                       \
diff --git a/src/plugins/snat/nat64_cli.c b/src/plugins/nat/nat64_cli.c
index ca60b12c189..bb62ecf2967 100644
--- a/src/plugins/snat/nat64_cli.c
+++ b/src/plugins/nat/nat64_cli.c
@@ -17,8 +17,8 @@
  * @brief NAT64 CLI
  */
 
-#include <snat/nat64.h>
-#include <snat/snat.h>
+#include <nat/nat64.h>
+#include <nat/nat.h>
 #include <vnet/fib/fib_table.h>
 
 static clib_error_t *
diff --git a/src/plugins/snat/nat64_db.c b/src/plugins/nat/nat64_db.c
index 9584827e4da..da73ceee2d1 100644
--- a/src/plugins/snat/nat64_db.c
+++ b/src/plugins/nat/nat64_db.c
@@ -16,7 +16,7 @@
  * @file
  * @brief NAT64 DB
  */
-#include <snat/nat64_db.h>
+#include <nat/nat64_db.h>
 
 int
 nat64_db_init (nat64_db_t * db)
diff --git a/src/plugins/snat/nat64_db.h b/src/plugins/nat/nat64_db.h
index 1e2dcc930d8..394ca875bbb 100644
--- a/src/plugins/snat/nat64_db.h
+++ b/src/plugins/nat/nat64_db.h
@@ -21,7 +21,7 @@
 
 #include <vppinfra/bihash_24_8.h>
 #include <vppinfra/bihash_48_8.h>
-#include <snat/snat.h>
+#include <nat/nat.h>
 
 
 typedef struct
diff --git a/src/plugins/snat/nat64_doc.md b/src/plugins/nat/nat64_doc.md
index f94467dade1..f94467dade1 100644
--- a/src/plugins/snat/nat64_doc.md
+++ b/src/plugins/nat/nat64_doc.md
diff --git a/src/plugins/snat/nat64_in2out.c b/src/plugins/nat/nat64_in2out.c
index 8c67fec2b29..f78baff4e12 100644
--- a/src/plugins/snat/nat64_in2out.c
+++ b/src/plugins/nat/nat64_in2out.c
@@ -17,7 +17,7 @@
  * @brief NAT64 IPv6 to IPv4 translation (inside to outside network)
  */
 
-#include <snat/nat64.h>
+#include <nat/nat64.h>
 #include <vnet/ip/ip6_to_ip4.h>
 #include <vnet/fib/fib_table.h>
 
diff --git a/src/plugins/snat/nat64_out2in.c b/src/plugins/nat/nat64_out2in.c
index cd5b253ab5c..61e88a7f304 100644
--- a/src/plugins/snat/nat64_out2in.c
+++ b/src/plugins/nat/nat64_out2in.c
@@ -17,7 +17,7 @@
  * @brief NAT64 IPv4 to IPv6 translation (otside to inside network)
  */
 
-#include <snat/nat64.h>
+#include <nat/nat64.h>
 #include <vnet/ip/ip4_to_ip6.h>
 #include <vnet/fib/ip4_fib.h>
 
diff --git a/src/plugins/snat/snat_all_api_h.h b/src/plugins/nat/nat_all_api_h.h
index 490177008e0..acd9ba1cac9 100644
--- a/src/plugins/snat/snat_all_api_h.h
+++ b/src/plugins/nat/nat_all_api_h.h
@@ -1,6 +1,6 @@
 
 /*
- * snat_all_api_h.h - skeleton vpp engine plug-in api #include file
+ * nat_all_api_h.h - skeleton vpp engine plug-in api #include file
  *
  * Copyright (c) <current-year> <your-organization>
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,4 +16,4 @@
  * limitations under the License.
  */
 /* Include the generated file, see BUILT_SOURCES in Makefile.am */
-#include <snat/snat.api.h>
+#include <nat/nat.api.h>
diff --git a/src/plugins/snat/snat_api.c b/src/plugins/nat/nat_api.c
index 227074f9cb4..0a2141f2a05 100644
--- a/src/plugins/snat/snat_api.c
+++ b/src/plugins/nat/nat_api.c
@@ -15,26 +15,26 @@
  */
 /**
  * @file
- * @brief SNAT plugin API implementation
+ * @brief NAT plugin API implementation
  */
 
-#include <snat/snat.h>
-#include <snat/snat_det.h>
-#include <snat/nat64.h>
+#include <nat/nat.h>
+#include <nat/nat_det.h>
+#include <nat/nat64.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
 #include <vlibsocket/api.h>
-#include <snat/snat_msg_enum.h>
+#include <nat/nat_msg_enum.h>
 #include <vnet/fib/fib_table.h>
 
 /* define message structures */
 #define vl_typedefs
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
 #undef vl_typedefs
 
 /* define generated endian-swappers */
 #define vl_endianfun
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
 #undef vl_endianfun
 
 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
@@ -44,7 +44,7 @@
 
 /* Get the API version number */
 #define vl_api_version(n,v) static u32 api_version=(v);
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
 #undef vl_api_version
 
 /* Macro to finish up custom dump fns */
@@ -901,9 +901,9 @@ static void *vl_api_snat_user_session_dump_t_print
   FINISH;
 }
 
-/****************************/
-/*** detrministic NAT/CGN ***/
-/****************************/
+/******************************************************************/
+/*** detrministic NAT/CGN (old, will be deprecated after 17.10) ***/
+/******************************************************************/
 
 static void
 vl_api_snat_add_det_map_t_handler (vl_api_snat_add_det_map_t * mp)
@@ -1293,6 +1293,1263 @@ static void *vl_api_snat_det_session_dump_t_print
   FINISH;
 }
 
+/******************************/
+/*** Common NAT plugin APIs ***/
+/******************************/
+
+static void
+vl_api_nat_control_ping_t_handler (vl_api_nat_control_ping_t * mp)
+{
+  vl_api_nat_control_ping_reply_t *rmp;
+  snat_main_t *sm = &snat_main;
+  int rv = 0;
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_NAT_CONTROL_PING_REPLY,
+  ({
+    rmp->vpe_pid = ntohl (getpid ());
+  }));
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_control_ping_t_print (vl_api_nat_control_ping_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_control_ping ");
+
+  FINISH;
+}
+
+static void
+vl_api_nat_show_config_t_handler (vl_api_nat_show_config_t * mp)
+{
+  vl_api_nat_show_config_reply_t *rmp;
+  snat_main_t *sm = &snat_main;
+  int rv = 0;
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_NAT_SHOW_CONFIG_REPLY,
+  ({
+    rmp->translation_buckets = htonl (sm->translation_buckets);
+    rmp->translation_memory_size = htonl (sm->translation_memory_size);
+    rmp->user_buckets = htonl (sm->user_buckets);
+    rmp->user_memory_size = htonl (sm->user_memory_size);
+    rmp->max_translations_per_user = htonl (sm->max_translations_per_user);
+    rmp->outside_vrf_id = htonl (sm->outside_vrf_id);
+    rmp->inside_vrf_id = htonl (sm->inside_vrf_id);
+    rmp->static_mapping_only = sm->static_mapping_only;
+    rmp->static_mapping_connection_tracking =
+      sm->static_mapping_connection_tracking;
+    rmp->deterministic = sm->deterministic;
+  }));
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_show_config_t_print (vl_api_nat_show_config_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_show_config ");
+
+  FINISH;
+}
+
+static void
+vl_api_nat_set_workers_t_handler (vl_api_nat_set_workers_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_snat_set_workers_reply_t *rmp;
+  int rv = 0;
+  uword *bitmap = 0;
+  u64 mask = clib_net_to_host_u64 (mp->worker_mask);
+
+  if (sm->num_workers < 2)
+    {
+      rv = VNET_API_ERROR_FEATURE_DISABLED;
+      goto send_reply;
+    }
+
+  bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
+  rv = snat_set_workers (bitmap);
+  clib_bitmap_free (bitmap);
+
+send_reply:
+  REPLY_MACRO (VL_API_NAT_SET_WORKERS_REPLY);
+}
+
+static void *
+vl_api_nat_set_workers_t_print (vl_api_nat_set_workers_t * mp, void *handle)
+{
+  u8 *s;
+  uword *bitmap = 0;
+  u8 first = 1;
+  int i;
+  u64 mask = clib_net_to_host_u64 (mp->worker_mask);
+
+  s = format (0, "SCRIPT: nat_set_workers ");
+  bitmap = clib_bitmap_set_multiple (bitmap, 0, mask, BITS (mask));
+  /* *INDENT-OFF* */
+  clib_bitmap_foreach (i, bitmap,
+    ({
+      if (first)
+        s = format (s, "%d", i);
+      else
+        s = format (s, ",%d", i);
+      first = 0;
+    }));
+  /* *INDENT-ON* */
+  clib_bitmap_free (bitmap);
+  FINISH;
+}
+
+static void
+send_nat_worker_details (u32 worker_index, unix_shared_memory_queue_t * q,
+			 u32 context)
+{
+  vl_api_nat_worker_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+  vlib_worker_thread_t *w =
+    vlib_worker_threads + worker_index + sm->first_worker_index;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT_WORKER_DETAILS + sm->msg_id_base);
+  rmp->context = context;
+  rmp->worker_index = htonl (worker_index);
+  rmp->lcore_id = htonl (w->lcore_id);
+  strncpy ((char *) rmp->name, (char *) w->name, ARRAY_LEN (rmp->name) - 1);
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat_worker_dump_t_handler (vl_api_nat_worker_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  u32 *worker_index;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  vec_foreach (worker_index, sm->workers)
+    send_nat_worker_details(*worker_index, q, mp->context);
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_worker_dump_t_print (vl_api_nat_worker_dump_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_worker_dump ");
+
+  FINISH;
+}
+
+static void
+vl_api_nat_ipfix_enable_disable_t_handler (vl_api_nat_ipfix_enable_disable_t *
+					   mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_ipfix_enable_disable_reply_t *rmp;
+  int rv = 0;
+
+  rv = snat_ipfix_logging_enable_disable (mp->enable,
+					  clib_host_to_net_u32
+					  (mp->domain_id),
+					  clib_host_to_net_u16
+					  (mp->src_port));
+
+  REPLY_MACRO (VL_API_NAT_IPFIX_ENABLE_DISABLE_REPLY);
+}
+
+static void *
+vl_api_nat_ipfix_enable_disable_t_print (vl_api_nat_ipfix_enable_disable_t *
+					 mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_ipfix_enable_disable ");
+  if (mp->domain_id)
+    s = format (s, "domain %d ", clib_net_to_host_u32 (mp->domain_id));
+  if (mp->src_port)
+    s = format (s, "src_port %d ", clib_net_to_host_u16 (mp->src_port));
+  if (!mp->enable)
+    s = format (s, "disable ");
+
+  FINISH;
+}
+
+/*************/
+/*** NAT44 ***/
+/*************/
+static void
+  vl_api_nat44_add_del_address_range_t_handler
+  (vl_api_nat44_add_del_address_range_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat44_add_del_address_range_reply_t *rmp;
+  ip4_address_t this_addr;
+  u32 start_host_order, end_host_order;
+  u32 vrf_id;
+  int i, count;
+  int rv = 0;
+  u32 *tmp;
+
+  if (sm->static_mapping_only)
+    {
+      rv = VNET_API_ERROR_FEATURE_DISABLED;
+      goto send_reply;
+    }
+
+  tmp = (u32 *) mp->first_ip_address;
+  start_host_order = clib_host_to_net_u32 (tmp[0]);
+  tmp = (u32 *) mp->last_ip_address;
+  end_host_order = clib_host_to_net_u32 (tmp[0]);
+
+  count = (end_host_order - start_host_order) + 1;
+
+  vrf_id = clib_host_to_net_u32 (mp->vrf_id);
+
+  if (count > 1024)
+    clib_warning ("%U - %U, %d addresses...",
+		  format_ip4_address, mp->first_ip_address,
+		  format_ip4_address, mp->last_ip_address, count);
+
+  memcpy (&this_addr.as_u8, mp->first_ip_address, 4);
+
+  for (i = 0; i < count; i++)
+    {
+      if (mp->is_add)
+	snat_add_address (sm, &this_addr, vrf_id);
+      else
+	rv = snat_del_address (sm, this_addr, 0);
+
+      if (rv)
+	goto send_reply;
+
+      increment_v4_address (&this_addr);
+    }
+
+send_reply:
+  REPLY_MACRO (VL_API_NAT44_ADD_DEL_ADDRESS_RANGE_REPLY);
+}
+
+static void *vl_api_nat44_add_del_address_range_t_print
+  (vl_api_nat44_add_del_address_range_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_add_address_range ");
+  s = format (s, "%U ", format_ip4_address, mp->first_ip_address);
+  if (memcmp (mp->first_ip_address, mp->last_ip_address, 4))
+    {
+      s = format (s, " - %U ", format_ip4_address, mp->last_ip_address);
+    }
+  FINISH;
+}
+
+static void
+send_nat44_address_details (snat_address_t * a,
+			    unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_nat44_address_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT44_ADDRESS_DETAILS + sm->msg_id_base);
+  clib_memcpy (rmp->ip_address, &(a->addr), 4);
+  if (a->fib_index != ~0)
+    {
+      fib_table_t *fib = fib_table_get (a->fib_index, FIB_PROTOCOL_IP4);
+      rmp->vrf_id = ntohl (fib->ft_table_id);
+    }
+  else
+    rmp->vrf_id = ~0;
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat44_address_dump_t_handler (vl_api_nat44_address_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_address_t *a;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  vec_foreach (a, sm->addresses)
+    send_nat44_address_details (a, q, mp->context);
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat44_address_dump_t_print (vl_api_nat44_address_dump_t * mp,
+				   void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_address_dump ");
+
+  FINISH;
+}
+
+static void
+  vl_api_nat44_interface_add_del_feature_t_handler
+  (vl_api_nat44_interface_add_del_feature_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat44_interface_add_del_feature_reply_t *rmp;
+  u8 is_del = mp->is_add == 0;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  rv = snat_interface_add_del (sw_if_index, mp->is_inside, is_del);
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_NAT44_INTERFACE_ADD_DEL_FEATURE_REPLY);
+}
+
+static void *vl_api_nat44_interface_add_del_feature_t_print
+  (vl_api_nat44_interface_add_del_feature_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_interface_add_del_feature ");
+  s = format (s, "sw_if_index %d %s %s",
+	      clib_host_to_net_u32 (mp->sw_if_index),
+	      mp->is_inside ? "in" : "out", mp->is_add ? "" : "del");
+
+  FINISH;
+}
+
+static void
+send_nat44_interface_details (snat_interface_t * i,
+			      unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_nat44_interface_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT44_INTERFACE_DETAILS + sm->msg_id_base);
+  rmp->sw_if_index = ntohl (i->sw_if_index);
+  rmp->is_inside = i->is_inside;
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat44_interface_dump_t_handler (vl_api_nat44_interface_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_interface_t *i;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  pool_foreach (i, sm->interfaces,
+  ({
+    send_nat44_interface_details(i, q, mp->context);
+  }));
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat44_interface_dump_t_print (vl_api_nat44_interface_dump_t * mp,
+				     void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_interface_dump ");
+
+  FINISH;
+}
+
+static void
+  vl_api_nat44_interface_add_del_output_feature_t_handler
+  (vl_api_nat44_interface_add_del_output_feature_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat44_interface_add_del_output_feature_reply_t *rmp;
+  u8 is_del = mp->is_add == 0;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  rv = snat_interface_add_del_output_feature (sw_if_index, mp->is_inside,
+					      is_del);
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_NAT44_INTERFACE_ADD_DEL_OUTPUT_FEATURE_REPLY);
+}
+
+static void *vl_api_nat44_interface_add_del_output_feature_t_print
+  (vl_api_nat44_interface_add_del_output_feature_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_interface_add_del_output_feature ");
+  s = format (s, "sw_if_index %d %s %s",
+	      clib_host_to_net_u32 (mp->sw_if_index),
+	      mp->is_inside ? "in" : "out", mp->is_add ? "" : "del");
+
+  FINISH;
+}
+
+static void
+send_nat44_interface_output_feature_details (snat_interface_t * i,
+					     unix_shared_memory_queue_t * q,
+					     u32 context)
+{
+  vl_api_nat44_interface_output_feature_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT44_INTERFACE_OUTPUT_FEATURE_DETAILS + sm->msg_id_base);
+  rmp->sw_if_index = ntohl (i->sw_if_index);
+  rmp->context = context;
+  rmp->is_inside = i->is_inside;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+  vl_api_nat44_interface_output_feature_dump_t_handler
+  (vl_api_nat44_interface_output_feature_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_interface_t *i;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  pool_foreach (i, sm->output_feature_interfaces,
+  ({
+    send_nat44_interface_output_feature_details(i, q, mp->context);
+  }));
+  /* *INDENT-ON* */
+}
+
+static void *vl_api_nat44_interface_output_feature_dump_t_print
+  (vl_api_nat44_interface_output_feature_dump_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_interface_output_feature_dump ");
+
+  FINISH;
+}
+
+static void
+  vl_api_nat44_add_del_static_mapping_t_handler
+  (vl_api_nat44_add_del_static_mapping_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat44_add_del_static_mapping_reply_t *rmp;
+  ip4_address_t local_addr, external_addr;
+  u16 local_port = 0, external_port = 0;
+  u32 vrf_id, external_sw_if_index;
+  int rv = 0;
+  snat_protocol_t proto;
+
+  memcpy (&local_addr.as_u8, mp->local_ip_address, 4);
+  memcpy (&external_addr.as_u8, mp->external_ip_address, 4);
+  if (mp->addr_only == 0)
+    {
+      local_port = clib_net_to_host_u16 (mp->local_port);
+      external_port = clib_net_to_host_u16 (mp->external_port);
+    }
+  vrf_id = clib_net_to_host_u32 (mp->vrf_id);
+  external_sw_if_index = clib_net_to_host_u32 (mp->external_sw_if_index);
+  proto = ip_proto_to_snat_proto (mp->protocol);
+
+  rv = snat_add_static_mapping (local_addr, external_addr, local_port,
+				external_port, vrf_id, mp->addr_only,
+				external_sw_if_index, proto, mp->is_add);
+
+  REPLY_MACRO (VL_API_NAT44_ADD_DEL_STATIC_MAPPING_REPLY);
+}
+
+static void *vl_api_nat44_add_del_static_mapping_t_print
+  (vl_api_nat44_add_del_static_mapping_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_add_del_static_mapping ");
+  s = format (s, "protocol %d local_addr %U external_addr %U ",
+	      mp->protocol,
+	      format_ip4_address, mp->local_ip_address,
+	      format_ip4_address, mp->external_ip_address);
+
+  if (mp->addr_only == 0)
+    s = format (s, "local_port %d external_port %d ",
+		clib_net_to_host_u16 (mp->local_port),
+		clib_net_to_host_u16 (mp->external_port));
+
+  if (mp->vrf_id != ~0)
+    s = format (s, "vrf %d", clib_net_to_host_u32 (mp->vrf_id));
+
+  if (mp->external_sw_if_index != ~0)
+    s = format (s, "external_sw_if_index %d",
+		clib_net_to_host_u32 (mp->external_sw_if_index));
+  FINISH;
+}
+
+static void
+send_nat44_static_mapping_details (snat_static_mapping_t * m,
+				   unix_shared_memory_queue_t * q,
+				   u32 context)
+{
+  vl_api_nat44_static_mapping_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT44_STATIC_MAPPING_DETAILS + sm->msg_id_base);
+  rmp->addr_only = m->addr_only;
+  clib_memcpy (rmp->local_ip_address, &(m->local_addr), 4);
+  clib_memcpy (rmp->external_ip_address, &(m->external_addr), 4);
+  rmp->local_port = htons (m->local_port);
+  rmp->external_port = htons (m->external_port);
+  rmp->external_sw_if_index = ~0;
+  rmp->vrf_id = htonl (m->vrf_id);
+  rmp->protocol = snat_proto_to_ip_proto (m->proto);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+send_nat44_static_map_resolve_details (snat_static_map_resolve_t * m,
+				       unix_shared_memory_queue_t * q,
+				       u32 context)
+{
+  vl_api_nat44_static_mapping_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT44_STATIC_MAPPING_DETAILS + sm->msg_id_base);
+  rmp->addr_only = m->addr_only;
+  clib_memcpy (rmp->local_ip_address, &(m->l_addr), 4);
+  rmp->local_port = htons (m->l_port);
+  rmp->external_port = htons (m->e_port);
+  rmp->external_sw_if_index = htonl (m->sw_if_index);
+  rmp->vrf_id = htonl (m->vrf_id);
+  rmp->protocol = snat_proto_to_ip_proto (m->proto);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat44_static_mapping_dump_t_handler (vl_api_nat44_static_mapping_dump_t
+					    * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_static_mapping_t *m;
+  snat_static_map_resolve_t *rp;
+  int j;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  pool_foreach (m, sm->static_mappings,
+  ({
+      send_nat44_static_mapping_details (m, q, mp->context);
+  }));
+  /* *INDENT-ON* */
+
+  for (j = 0; j < vec_len (sm->to_resolve); j++)
+    {
+      rp = sm->to_resolve + j;
+      send_nat44_static_map_resolve_details (rp, q, mp->context);
+    }
+}
+
+static void *
+vl_api_nat44_static_mapping_dump_t_print (vl_api_nat44_static_mapping_dump_t *
+					  mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_static_mapping_dump ");
+
+  FINISH;
+}
+
+static void
+  vl_api_nat44_add_del_interface_addr_t_handler
+  (vl_api_nat44_add_del_interface_addr_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat44_add_del_interface_addr_reply_t *rmp;
+  u8 is_del = mp->is_add == 0;
+  u32 sw_if_index = ntohl (mp->sw_if_index);
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  rv = snat_add_interface_address (sm, sw_if_index, is_del);
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_NAT44_ADD_DEL_INTERFACE_ADDR_REPLY);
+}
+
+static void *vl_api_nat44_add_del_interface_addr_t_print
+  (vl_api_nat44_add_del_interface_addr_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_add_del_interface_addr ");
+  s = format (s, "sw_if_index %d %s",
+	      clib_host_to_net_u32 (mp->sw_if_index),
+	      mp->is_add ? "" : "del");
+
+  FINISH;
+}
+
+static void
+send_nat44_interface_addr_details (u32 sw_if_index,
+				   unix_shared_memory_queue_t * q,
+				   u32 context)
+{
+  vl_api_nat44_interface_addr_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT44_INTERFACE_ADDR_DETAILS + sm->msg_id_base);
+  rmp->sw_if_index = ntohl (sw_if_index);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat44_interface_addr_dump_t_handler (vl_api_nat44_interface_addr_dump_t
+					    * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  u32 *i;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  vec_foreach (i, sm->auto_add_sw_if_indices)
+    send_nat44_interface_addr_details(*i, q, mp->context);
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat44_interface_addr_dump_t_print (vl_api_nat44_interface_addr_dump_t *
+					  mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_interface_addr_dump ");
+
+  FINISH;
+}
+
+static void
+send_nat44_user_details (snat_user_t * u, unix_shared_memory_queue_t * q,
+			 u32 context)
+{
+  vl_api_nat44_user_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+  fib_table_t *fib = fib_table_get (u->fib_index, FIB_PROTOCOL_IP4);
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT44_USER_DETAILS + sm->msg_id_base);
+
+  rmp->vrf_id = ntohl (fib->ft_table_id);
+
+  clib_memcpy (rmp->ip_address, &(u->addr), 4);
+  rmp->nsessions = ntohl (u->nsessions);
+  rmp->nstaticsessions = ntohl (u->nstaticsessions);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat44_user_dump_t_handler (vl_api_nat44_user_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_main_per_thread_data_t *tsm;
+  snat_user_t *u;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  vec_foreach (tsm, sm->per_thread_data)
+    vec_foreach (u, tsm->users)
+      send_nat44_user_details (u, q, mp->context);
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat44_user_dump_t_print (vl_api_nat44_user_dump_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_user_dump ");
+
+  FINISH;
+}
+
+static void
+send_nat44_user_session_details (snat_session_t * s,
+				 unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_nat44_user_session_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT44_USER_SESSION_DETAILS + sm->msg_id_base);
+  clib_memcpy (rmp->outside_ip_address, (&s->out2in.addr), 4);
+  clib_memcpy (rmp->inside_ip_address, (&s->in2out.addr), 4);
+  rmp->is_static = s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING ? 1 : 0;
+  rmp->last_heard = clib_host_to_net_u64 ((u64) s->last_heard);
+  rmp->total_bytes = clib_host_to_net_u64 (s->total_bytes);
+  rmp->total_pkts = ntohl (s->total_pkts);
+  rmp->context = context;
+  if (snat_is_unk_proto_session (s))
+    {
+      rmp->outside_port = 0;
+      rmp->inside_port = 0;
+      rmp->protocol = ntohs (s->in2out.port);
+    }
+  else
+    {
+      rmp->outside_port = s->out2in.port;
+      rmp->inside_port = s->in2out.port;
+      rmp->protocol = ntohs (snat_proto_to_ip_proto (s->in2out.protocol));
+    }
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat44_user_session_dump_t_handler (vl_api_nat44_user_session_dump_t *
+					  mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_main_per_thread_data_t *tsm;
+  snat_session_t *s;
+  clib_bihash_kv_8_8_t key, value;
+  snat_user_key_t ukey;
+  snat_user_t *u;
+  u32 session_index, head_index, elt_index;
+  dlist_elt_t *head, *elt;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  clib_memcpy (&ukey.addr, mp->ip_address, 4);
+  ukey.fib_index = fib_table_find (FIB_PROTOCOL_IP4, ntohl (mp->vrf_id));
+  key.key = ukey.as_u64;
+  if (!clib_bihash_search_8_8 (&sm->worker_by_in, &key, &value))
+    tsm = vec_elt_at_index (sm->per_thread_data, value.value);
+  else
+    tsm = vec_elt_at_index (sm->per_thread_data, sm->num_workers);
+  if (clib_bihash_search_8_8 (&sm->user_hash, &key, &value))
+    return;
+  u = pool_elt_at_index (tsm->users, value.value);
+  if (!u->nsessions && !u->nstaticsessions)
+    return;
+
+  head_index = u->sessions_per_user_list_head_index;
+  head = pool_elt_at_index (tsm->list_pool, head_index);
+  elt_index = head->next;
+  elt = pool_elt_at_index (tsm->list_pool, elt_index);
+  session_index = elt->value;
+  while (session_index != ~0)
+    {
+      s = pool_elt_at_index (tsm->sessions, session_index);
+
+      send_nat44_user_session_details (s, q, mp->context);
+
+      elt_index = elt->next;
+      elt = pool_elt_at_index (tsm->list_pool, elt_index);
+      session_index = elt->value;
+    }
+}
+
+static void *
+vl_api_nat44_user_session_dump_t_print (vl_api_nat44_user_session_dump_t * mp,
+					void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat44_user_session_dump ");
+  s = format (s, "ip_address %U vrf_id %d\n",
+	      format_ip4_address, mp->ip_address,
+	      clib_net_to_host_u32 (mp->vrf_id));
+
+  FINISH;
+}
+
+/*******************************/
+/*** Deterministic NAT (CGN) ***/
+/*******************************/
+
+static void
+vl_api_nat_det_add_del_map_t_handler (vl_api_nat_det_add_del_map_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_add_del_map_reply_t *rmp;
+  int rv = 0;
+  ip4_address_t in_addr, out_addr;
+
+  if (!mp->is_nat44)
+    {
+      rv = VNET_API_ERROR_UNIMPLEMENTED;
+      goto send_reply;
+    }
+
+  clib_memcpy (&in_addr, mp->in_addr, 4);
+  clib_memcpy (&out_addr, mp->out_addr, 4);
+  rv = snat_det_add_map (sm, &in_addr, mp->in_plen, &out_addr,
+			 mp->out_plen, mp->is_add);
+
+send_reply:
+  REPLY_MACRO (VL_API_NAT_DET_ADD_DEL_MAP_REPLY);
+}
+
+static void *
+vl_api_nat_det_add_del_map_t_print (vl_api_nat_det_add_del_map_t * mp,
+				    void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_add_del_map ");
+  s = format (s, "inside address %U/%d outside address %U/%d\n",
+	      format_ip4_address, mp->in_addr, mp->in_plen,
+	      format_ip4_address, mp->out_addr, mp->out_plen);
+
+  FINISH;
+}
+
+static void
+vl_api_nat_det_forward_t_handler (vl_api_nat_det_forward_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_forward_reply_t *rmp;
+  int rv = 0;
+  u16 lo_port = 0, hi_port = 0;
+  snat_det_map_t *dm;
+  ip4_address_t in_addr, out_addr;
+
+  if (!mp->is_nat44)
+    {
+      out_addr.as_u32 = 0;
+      rv = VNET_API_ERROR_UNIMPLEMENTED;
+      goto send_reply;
+    }
+
+  out_addr.as_u32 = 0;
+  clib_memcpy (&in_addr, mp->in_addr, 4);
+  dm = snat_det_map_by_user (sm, &in_addr);
+  if (!dm)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto send_reply;
+    }
+
+  snat_det_forward (dm, &in_addr, &out_addr, &lo_port);
+  hi_port = lo_port + dm->ports_per_host - 1;
+
+send_reply:
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_NAT_DET_FORWARD_REPLY,
+  ({
+    rmp->out_port_lo = ntohs (lo_port);
+    rmp->out_port_hi = ntohs (hi_port);
+    clib_memcpy (rmp->out_addr, &out_addr, 4);
+  }))
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_det_forward_t_print (vl_api_nat_det_forward_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_forward");
+  s = format (s, "inside ip address %U\n", format_ip4_address, mp->in_addr);
+
+  FINISH;
+}
+
+static void
+vl_api_nat_det_reverse_t_handler (vl_api_nat_det_reverse_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_reverse_reply_t *rmp;
+  int rv = 0;
+  ip4_address_t out_addr, in_addr;
+  snat_det_map_t *dm;
+
+  in_addr.as_u32 = 0;
+  clib_memcpy (&out_addr, mp->out_addr, 4);
+  dm = snat_det_map_by_out (sm, &out_addr);
+  if (!dm)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto send_reply;
+    }
+
+  snat_det_reverse (dm, &out_addr, htons (mp->out_port), &in_addr);
+
+send_reply:
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_NAT_DET_REVERSE_REPLY,
+  ({
+    rmp->is_nat44 = 1;
+    memset (rmp->in_addr, 0, 16);
+    clib_memcpy (rmp->in_addr, &in_addr, 4);
+  }))
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_det_reverse_t_print (vl_api_nat_det_reverse_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_reverse");
+  s = format (s, "outside ip address %U outside port %d",
+	      format_ip4_address, mp->out_addr, ntohs (mp->out_port));
+
+  FINISH;
+}
+
+static void
+sent_nat_det_map_details (snat_det_map_t * m, unix_shared_memory_queue_t * q,
+			  u32 context)
+{
+  vl_api_nat_det_map_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_MAP_DETAILS + sm->msg_id_base);
+  rmp->is_nat44 = 1;
+  clib_memcpy (rmp->in_addr, &m->in_addr, 4);
+  rmp->in_plen = m->in_plen;
+  clib_memcpy (rmp->out_addr, &m->out_addr, 4);
+  rmp->out_plen = m->out_plen;
+  rmp->sharing_ratio = htonl (m->sharing_ratio);
+  rmp->ports_per_host = htons (m->ports_per_host);
+  rmp->ses_num = htonl (m->ses_num);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat_det_map_dump_t_handler (vl_api_nat_det_map_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  snat_det_map_t *m;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  /* *INDENT-OFF* */
+  vec_foreach(m, sm->det_maps)
+    sent_nat_det_map_details(m, q, mp->context);
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_det_map_dump_t_print (vl_api_nat_det_map_dump_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_map_dump ");
+
+  FINISH;
+}
+
+static void
+vl_api_nat_det_set_timeouts_t_handler (vl_api_nat_det_set_timeouts_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_set_timeouts_reply_t *rmp;
+  int rv = 0;
+
+  sm->udp_timeout = ntohl (mp->udp);
+  sm->tcp_established_timeout = ntohl (mp->tcp_established);
+  sm->tcp_transitory_timeout = ntohl (mp->tcp_transitory);
+  sm->icmp_timeout = ntohl (mp->icmp);
+
+  REPLY_MACRO (VL_API_NAT_DET_SET_TIMEOUTS_REPLY);
+}
+
+static void *
+vl_api_nat_det_set_timeouts_t_print (vl_api_nat_det_set_timeouts_t * mp,
+				     void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_set_timeouts ");
+  s = format (s, "udp %d tcp_established %d tcp_transitory %d icmp %d\n",
+	      ntohl (mp->udp),
+	      ntohl (mp->tcp_established),
+	      ntohl (mp->tcp_transitory), ntohl (mp->icmp));
+
+  FINISH;
+}
+
+static void
+vl_api_nat_det_get_timeouts_t_handler (vl_api_nat_det_get_timeouts_t * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_get_timeouts_reply_t *rmp;
+  int rv = 0;
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_NAT_DET_GET_TIMEOUTS_REPLY,
+  ({
+    rmp->udp = htonl (sm->udp_timeout);
+    rmp->tcp_established = htonl (sm->tcp_established_timeout);
+    rmp->tcp_transitory = htonl (sm->tcp_transitory_timeout);
+    rmp->icmp = htonl (sm->icmp_timeout);
+  }))
+  /* *INDENT-ON* */
+}
+
+static void *
+vl_api_nat_det_get_timeouts_t_print (vl_api_nat_det_get_timeouts_t * mp,
+				     void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_get_timeouts");
+
+  FINISH;
+}
+
+static void
+vl_api_nat_det_close_session_out_t_handler (vl_api_nat_det_close_session_out_t
+					    * mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_close_session_out_reply_t *rmp;
+  ip4_address_t out_addr, ext_addr, in_addr;
+  snat_det_out_key_t key;
+  snat_det_map_t *dm;
+  snat_det_session_t *ses;
+  int rv = 0;
+
+  clib_memcpy (&out_addr, mp->out_addr, 4);
+  clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+  dm = snat_det_map_by_out (sm, &out_addr);
+  if (!dm)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto send_reply;
+    }
+  snat_det_reverse (dm, &ext_addr, ntohs (mp->out_port), &in_addr);
+  key.ext_host_addr = ext_addr;
+  key.ext_host_port = mp->ext_port;
+  key.out_port = mp->out_port;
+  ses = snat_det_get_ses_by_out (dm, &in_addr, key.as_u64);
+  if (!ses)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto send_reply;
+    }
+  snat_det_ses_close (dm, ses);
+
+send_reply:
+  REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void *
+vl_api_nat_det_close_session_out_t_print (vl_api_nat_det_close_session_out_t *
+					  mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_close_session_out ");
+  s = format (s, "out_addr %U out_port %d "
+	      "ext_addr %U ext_port %d\n",
+	      format_ip4_address, mp->out_addr, ntohs (mp->out_port),
+	      format_ip4_address, mp->ext_addr, ntohs (mp->ext_port));
+
+  FINISH;
+}
+
+static void
+vl_api_nat_det_close_session_in_t_handler (vl_api_nat_det_close_session_in_t *
+					   mp)
+{
+  snat_main_t *sm = &snat_main;
+  vl_api_nat_det_close_session_in_reply_t *rmp;
+  ip4_address_t in_addr, ext_addr;
+  snat_det_out_key_t key;
+  snat_det_map_t *dm;
+  snat_det_session_t *ses;
+  int rv = 0;
+
+  if (!mp->is_nat44)
+    {
+      rv = VNET_API_ERROR_UNIMPLEMENTED;
+      goto send_reply;
+    }
+
+  clib_memcpy (&in_addr, mp->in_addr, 4);
+  clib_memcpy (&ext_addr, mp->ext_addr, 4);
+
+  dm = snat_det_map_by_user (sm, &in_addr);
+  if (!dm)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto send_reply;
+    }
+  key.ext_host_addr = ext_addr;
+  key.ext_host_port = mp->ext_port;
+  ses = snat_det_find_ses_by_in (dm, &in_addr, mp->in_port, key);
+  if (!ses)
+    {
+      rv = VNET_API_ERROR_NO_SUCH_ENTRY;
+      goto send_reply;
+    }
+  snat_det_ses_close (dm, ses);
+
+send_reply:
+  REPLY_MACRO (VL_API_NAT_DET_CLOSE_SESSION_OUT_REPLY);
+}
+
+static void *
+vl_api_nat_det_close_session_in_t_print (vl_api_nat_det_close_session_in_t *
+					 mp, void *handle)
+{
+  u8 *s;
+  s = format (0, "SCRIPT: nat_det_close_session_in ");
+  s = format (s, "in_addr %U in_port %d ext_addr %U ext_port %d\n",
+	      format_ip4_address, mp->in_addr, ntohs (mp->in_port),
+	      format_ip4_address, mp->ext_addr, ntohs (mp->ext_port));
+
+  FINISH;
+}
+
+static void
+send_nat_det_session_details (snat_det_session_t * s,
+			      unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_nat_det_session_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT_DET_SESSION_DETAILS + sm->msg_id_base);
+  rmp->in_port = s->in_port;
+  clib_memcpy (rmp->ext_addr, &s->out.ext_host_addr, 4);
+  rmp->ext_port = s->out.ext_host_port;
+  rmp->out_port = s->out.out_port;
+  rmp->state = s->state;
+  rmp->expire = ntohl (s->expire);
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nat_det_session_dump_t_handler (vl_api_nat_det_session_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  snat_main_t *sm = &snat_main;
+  ip4_address_t user_addr;
+  snat_det_map_t *dm;
+  snat_det_session_t *s, empty_ses;
+  u16 i;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+  if (!mp->is_nat44)
+    return;
+
+  memset (&empty_ses, 0, sizeof (empty_ses));
+  clib_memcpy (&user_addr, mp->user_addr, 4);
+  dm = snat_det_map_by_user (sm, &user_addr);
+  if (!dm)
+    return;
+
+  s = dm->sessions + snat_det_user_ses_offset (&user_addr, dm->in_plen);
+  for (i = 0; i < SNAT_DET_SES_PER_USER; i++)
+    {
+      if (s->out.as_u64)
+	send_nat_det_session_details (s, q, mp->context);
+      s++;
+    }
+}
+
+static void *
+vl_api_nat_det_session_dump_t_print (vl_api_nat_det_session_dump_t * mp,
+				     void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat_det_session_dump ");
+  s = format (s, "user_addr %U\n", format_ip4_address, mp->user_addr);
+
+  FINISH;
+}
+
 /*************/
 /*** NAT64 ***/
 /*************/
@@ -1883,6 +3140,34 @@ _(SNAT_DET_GET_TIMEOUTS, snat_det_get_timeouts)                         \
 _(SNAT_DET_CLOSE_SESSION_OUT, snat_det_close_session_out)               \
 _(SNAT_DET_CLOSE_SESSION_IN, snat_det_close_session_in)                 \
 _(SNAT_DET_SESSION_DUMP, snat_det_session_dump)                         \
+_(NAT_CONTROL_PING, nat_control_ping)                                   \
+_(NAT_SHOW_CONFIG, nat_show_config)                                     \
+_(NAT_SET_WORKERS, nat_set_workers)                                     \
+_(NAT_WORKER_DUMP, nat_worker_dump)                                     \
+_(NAT_IPFIX_ENABLE_DISABLE, nat_ipfix_enable_disable)                   \
+_(NAT44_ADD_DEL_ADDRESS_RANGE, nat44_add_del_address_range)             \
+_(NAT44_INTERFACE_ADD_DEL_FEATURE, nat44_interface_add_del_feature)     \
+_(NAT44_ADD_DEL_STATIC_MAPPING, nat44_add_del_static_mapping)           \
+_(NAT44_STATIC_MAPPING_DUMP, nat44_static_mapping_dump)                 \
+_(NAT44_ADDRESS_DUMP, nat44_address_dump)                               \
+_(NAT44_INTERFACE_DUMP, nat44_interface_dump)                           \
+_(NAT44_ADD_DEL_INTERFACE_ADDR, nat44_add_del_interface_addr)           \
+_(NAT44_INTERFACE_ADDR_DUMP, nat44_interface_addr_dump)                 \
+_(NAT44_USER_DUMP, nat44_user_dump)                                     \
+_(NAT44_USER_SESSION_DUMP, nat44_user_session_dump)                     \
+_(NAT44_INTERFACE_ADD_DEL_OUTPUT_FEATURE,                               \
+  nat44_interface_add_del_output_feature)                               \
+_(NAT44_INTERFACE_OUTPUT_FEATURE_DUMP,                                  \
+  nat44_interface_output_feature_dump)                                  \
+_(NAT_DET_ADD_DEL_MAP, nat_det_add_del_map)                             \
+_(NAT_DET_FORWARD, nat_det_forward)                                     \
+_(NAT_DET_REVERSE, nat_det_reverse)                                     \
+_(NAT_DET_MAP_DUMP, nat_det_map_dump)                                   \
+_(NAT_DET_SET_TIMEOUTS, nat_det_set_timeouts)                           \
+_(NAT_DET_GET_TIMEOUTS, nat_det_get_timeouts)                           \
+_(NAT_DET_CLOSE_SESSION_OUT, nat_det_close_session_out)                 \
+_(NAT_DET_CLOSE_SESSION_IN, nat_det_close_session_in)                   \
+_(NAT_DET_SESSION_DUMP, nat_det_session_dump)                           \
 _(NAT64_ADD_DEL_POOL_ADDR_RANGE, nat64_add_del_pool_addr_range)         \
 _(NAT64_POOL_ADDR_DUMP, nat64_pool_addr_dump)                           \
 _(NAT64_ADD_DEL_INTERFACE, nat64_add_del_interface)                     \
@@ -1915,7 +3200,7 @@ snat_plugin_api_hookup (vlib_main_t * vm)
 }
 
 #define vl_msg_name_crc_list
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
 #undef vl_msg_name_crc_list
 
 static void
@@ -1923,7 +3208,7 @@ setup_message_id_table (snat_main_t * sm, api_main_t * am)
 {
 #define _(id,n,crc) \
   vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + sm->msg_id_base);
-  foreach_vl_msg_name_crc_snat;
+  foreach_vl_msg_name_crc_nat;
 #undef _
 }
 
diff --git a/src/plugins/snat/snat_det.c b/src/plugins/nat/nat_det.c
index 2d6fce85c0a..3af6698c09a 100644
--- a/src/plugins/snat/snat_det.c
+++ b/src/plugins/nat/nat_det.c
@@ -19,7 +19,7 @@
  * @brief deterministic NAT
  */
 
-#include <snat/snat_det.h>
+#include <nat/nat_det.h>
 
 
 /**
@@ -105,7 +105,7 @@ snat_det_add_map (snat_main_t * sm, ip4_address_t * in_addr, u8 in_plen,
 }
 
 /**
- * @brief The 'snat-det-expire-walk' process's main loop.
+ * @brief The 'nat-det-expire-walk' process's main loop.
  *
  * Check expire time for active sessions.
  */
@@ -145,7 +145,7 @@ VLIB_REGISTER_NODE (snat_det_expire_walk_node, static) = {
     .function = snat_det_expire_walk_fn,
     .type = VLIB_NODE_TYPE_PROCESS,
     .name =
-    "snat-det-expire-walk",
+    "nat-det-expire-walk",
 };
 /* *INDENT-ON* */
 
diff --git a/src/plugins/snat/snat_det.h b/src/plugins/nat/nat_det.h
index f4fdb256637..2ab7f27eece 100644
--- a/src/plugins/snat/snat_det.h
+++ b/src/plugins/nat/nat_det.h
@@ -1,5 +1,5 @@
 /*
- * snat_det.h - deterministic nat definitions
+ * snat_det.h - deterministic NAT definitions
  *
  * Copyright (c) 2017 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -19,12 +19,12 @@
  * @brief deterministic NAT definitions
  */
 
-#ifndef __included_snat_det_h__
-#define __included_snat_det_h__
+#ifndef __included_nat_det_h__
+#define __included_nat_det_h__
 
 #include <vnet/ip/ip.h>
-#include <snat/snat.h>
-#include <snat/snat_ipfix_logging.h>
+#include <nat/nat.h>
+#include <nat/nat_ipfix_logging.h>
 
 
 #define SNAT_DET_SES_PER_USER 1000
@@ -185,7 +185,7 @@ snat_det_ses_close (snat_det_map_t * dm, snat_det_session_t * ses)
     }
 }
 
-#endif /* __included_snat_det_h__ */
+#endif /* __included_nat_det_h__ */
 
 /*
  * fd.io coding-style-patch-verification: ON
diff --git a/src/plugins/snat/snat_ipfix_logging.c b/src/plugins/nat/nat_ipfix_logging.c
index c68dc540d15..0cc0f82a337 100644
--- a/src/plugins/snat/snat_ipfix_logging.c
+++ b/src/plugins/nat/nat_ipfix_logging.c
@@ -1,5 +1,5 @@
 /*
- * snat_ipfix_logging.c - NAT Events IPFIX logging
+ * nat_ipfix_logging.c - NAT Events IPFIX logging
  *
  * Copyright (c) 2016 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -17,8 +17,8 @@
 
 #include <vnet/flow/flow_report.h>
 #include <vlibmemory/api.h>
-#include <snat/snat.h>
-#include <snat/snat_ipfix_logging.h>
+#include <nat/nat.h>
+#include <nat/nat_ipfix_logging.h>
 
 snat_ipfix_logging_main_t snat_ipfix_logging_main;
 
@@ -610,7 +610,7 @@ snat_ipfix_logging_nat44_ses_rpc_cb (snat_ipfix_logging_nat44_ses_args_t *a)
  *
  * @param src_ip       source IPv4 address
  * @param nat_src_ip   transaltes source IPv4 address
- * @param snat_proto   SNAT transport protocol
+ * @param snat_proto   NAT transport protocol
  * @param src_port     source port
  * @param nat_src_port translated source port
  * @param vrf_id       VRF ID
@@ -642,7 +642,7 @@ snat_ipfix_logging_nat44_ses_create (u32 src_ip,
  *
  * @param src_ip       source IPv4 address
  * @param nat_src_ip   transaltes source IPv4 address
- * @param snat_proto   SNAT transport protocol
+ * @param snat_proto   NAT transport protocol
  * @param src_port     source port
  * @param nat_src_port translated source port
  * @param vrf_id       VRF ID
@@ -751,7 +751,7 @@ snat_data_callback_max_entries_per_usr (flow_report_main_t * frm,
 }
 
 /**
- * @brief Enable/disable SNAT IPFIX logging
+ * @brief Enable/disable NAT plugin IPFIX logging
  *
  * @param enable    1 if enable, 0 if disable
  * @param domain_id observation domain ID
@@ -818,7 +818,7 @@ snat_ipfix_logging_enable_disable (int enable, u32 domain_id, u16 src_port)
 }
 
 /**
- * @brief Initialize SNAT IPFIX logging
+ * @brief Initialize NAT plugin IPFIX logging
  *
  * @param vm vlib main
  */
diff --git a/src/plugins/snat/snat_ipfix_logging.h b/src/plugins/nat/nat_ipfix_logging.h
index 45c1a7bf8e1..6dbf6627fba 100644
--- a/src/plugins/snat/snat_ipfix_logging.h
+++ b/src/plugins/nat/nat_ipfix_logging.h
@@ -1,5 +1,5 @@
 /*
- * snat_ipfix_logging.h - NAT Events IPFIX logging
+ * nat_ipfix_logging.h - NAT Events IPFIX logging
  *
  * Copyright (c) 2016 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,8 +14,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef __included_snat_ipfix_logging_h__
-#define __included_snat_ipfix_logging_h__
+#ifndef __included_nat_ipfix_logging_h__
+#define __included_nat_ipfix_logging_h__
 
 typedef enum {
   NAT_ADDRESSES_EXHAUTED = 3,
@@ -30,7 +30,7 @@ typedef enum {
 } quota_exceed_event_t;
 
 typedef struct {
-  /** S-NAT IPFIX logging enabled */
+  /** NAT plugin IPFIX logging enabled */
   u8 enabled;
 
   /** ipfix buffers under construction */
@@ -76,4 +76,4 @@ void snat_ipfix_logging_nat44_ses_delete (u32 src_ip, u32 nat_src_ip,
 void snat_ipfix_logging_addresses_exhausted(u32 pool_id);
 void snat_ipfix_logging_max_entries_per_user(u32 src_ip);
 
-#endif /* __included_snat_ipfix_logging_h__ */
+#endif /* __included_nat_ipfix_logging_h__ */
diff --git a/src/plugins/snat/snat_msg_enum.h b/src/plugins/nat/nat_msg_enum.h
index 2c76fd51158..710b631c73d 100644
--- a/src/plugins/snat/snat_msg_enum.h
+++ b/src/plugins/nat/nat_msg_enum.h
@@ -1,6 +1,6 @@
 
 /*
- * snat_msg_enum.h - skeleton vpp engine plug-in message enumeration
+ * nat_msg_enum.h - skeleton vpp engine plug-in message enumeration
  *
  * Copyright (c) <current-year> <your-organization>
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -15,17 +15,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef included_snat_msg_enum_h
-#define included_snat_msg_enum_h
+#ifndef included_nat_msg_enum_h
+#define included_nat_msg_enum_h
 
 #include <vppinfra/byte_order.h>
 
 #define vl_msg_id(n,h) n,
 typedef enum {
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
     /* We'll want to know how many messages IDs we need... */
     VL_MSG_FIRST_AVAILABLE,
 } vl_msg_id_t;
 #undef vl_msg_id
 
-#endif /* included_snat_msg_enum_h */
+#endif /* included_nat_msg_enum_h */
diff --git a/src/plugins/snat/snat_test.c b/src/plugins/nat/nat_test.c
index 905b8fac66c..b653b77e40c 100644
--- a/src/plugins/snat/snat_test.c
+++ b/src/plugins/nat/nat_test.c
@@ -1,6 +1,6 @@
 
 /*
- * snat.c - skeleton vpp-api-test plug-in 
+ * nat.c - skeleton vpp-api-test plug-in
  *
  * Copyright (c) <current-year> <your-organization>
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -21,7 +21,7 @@
 #include <vlibsocket/api.h>
 #include <vppinfra/error.h>
 #include <vnet/ip/ip.h>
-#include <snat/snat.h>
+#include <nat/nat.h>
 
 #define __plugin_msg_base snat_test_main.msg_id_base
 #include <vlibapi/vat_helper_macros.h>
@@ -29,28 +29,28 @@
 uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
 
 /* Declare message IDs */
-#include <snat/snat_msg_enum.h>
+#include <nat/nat_msg_enum.h>
 
 /* define message structures */
 #define vl_typedefs
-#include <snat/snat_all_api_h.h> 
+#include <nat/nat_all_api_h.h>
 #undef vl_typedefs
 
 /* declare message handlers for each api */
 
 #define vl_endianfun             /* define message structures */
-#include <snat/snat_all_api_h.h> 
+#include <nat/nat_all_api_h.h>
 #undef vl_endianfun
 
 /* instantiate all the print functions we know about */
 #define vl_print(handle, ...)
 #define vl_printfun
-#include <snat/snat_all_api_h.h> 
+#include <nat/nat_all_api_h.h>
 #undef vl_printfun
 
 /* Get the API version number. */
 #define vl_api_version(n,v) static u32 api_version=(v);
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
 #undef vl_api_version
 
 typedef struct {
diff --git a/src/plugins/snat/out2in.c b/src/plugins/nat/out2in.c
index 329d67dc3bf..679500668c5 100644
--- a/src/plugins/snat/out2in.c
+++ b/src/plugins/nat/out2in.c
@@ -22,9 +22,9 @@
 #include <vnet/udp/udp.h>
 #include <vnet/ethernet/ethernet.h>
 #include <vnet/fib/ip4_fib.h>
-#include <snat/snat.h>
-#include <snat/snat_ipfix_logging.h>
-#include <snat/snat_det.h>
+#include <nat/nat.h>
+#include <nat/nat_ipfix_logging.h>
+#include <nat/nat_det.h>
 
 #include <vppinfra/hash.h>
 #include <vppinfra/error.h>
@@ -47,8 +47,8 @@ static u8 * format_snat_out2in_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 *);
   snat_out2in_trace_t * t = va_arg (*args, snat_out2in_trace_t *);
-  
-  s = format (s, "SNAT_OUT2IN: sw_if_index %d, next index %d, session index %d",
+
+  s = format (s, "NAT44_OUT2IN: sw_if_index %d, next index %d, session index %d",
               t->sw_if_index, t->next_index, t->session_index);
   return s;
 }
@@ -58,8 +58,8 @@ static u8 * format_snat_out2in_fast_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 *);
   snat_out2in_trace_t * t = va_arg (*args, snat_out2in_trace_t *);
-  
-  s = format (s, "SNAT_OUT2IN_FAST: sw_if_index %d, next index %d",
+
+  s = format (s, "NAT44_OUT2IN_FAST: sw_if_index %d, next index %d",
               t->sw_if_index, t->next_index);
   return s;
 }
@@ -73,7 +73,7 @@ static u8 * format_snat_out2in_worker_handoff_trace (u8 * s, va_list * args)
   char * m;
 
   m = t->do_handoff ? "next worker" : "same worker";
-  s = format (s, "SNAT_OUT2IN_WORKER_HANDOFF: %s %d", m, t->next_worker_index);
+  s = format (s, "NAT44_OUT2IN_WORKER_HANDOFF: %s %d", m, t->next_worker_index);
 
   return s;
 }
@@ -88,7 +88,7 @@ _(UNSUPPORTED_PROTOCOL, "Unsupported protocol")         \
 _(OUT2IN_PACKETS, "Good out2in packets processed")      \
 _(BAD_ICMP_TYPE, "unsupported ICMP type")               \
 _(NO_TRANSLATION, "No translation")
-  
+
 typedef enum {
 #define _(sym,str) SNAT_OUT2IN_ERROR_##sym,
   foreach_snat_out2in_error
@@ -115,10 +115,10 @@ typedef enum {
  * Create NAT session initiated by host from external network with static
  * mapping.
  *
- * @param sm     SNAT main.
+ * @param sm     NAT main.
  * @param b0     Vlib buffer.
- * @param in2out In2out SNAT session key.
- * @param out2in Out2in SNAT session key.
+ * @param in2out In2out NAT44 session key.
+ * @param out2in Out2in NAT44 session key.
  * @param node   Vlib node.
  *
  * @returns SNAT session if successfully created otherwise 0.
@@ -276,11 +276,11 @@ snat_out2in_error_t icmp_get_key(ip4_header_t *ip0,
 }
 
 /**
- * Get address and port values to be used for packet SNAT translation
+ * Get address and port values to be used for ICMP packet translation
  * and create session if needed
  *
- * @param[in,out] sm             SNAT main
- * @param[in,out] node           SNAT node runtime
+ * @param[in,out] sm             NAT main
+ * @param[in,out] node           NAT node runtime
  * @param[in] thread_index       thread index
  * @param[in,out] b0             buffer containing packet to be translated
  * @param[out] p_proto           protocol used for matching
@@ -387,10 +387,10 @@ out:
 }
 
 /**
- * Get address and port values to be used for packet SNAT translation
+ * Get address and port values to be used for ICMP packet translation
  *
- * @param[in] sm                 SNAT main
- * @param[in,out] node           SNAT node runtime
+ * @param[in] sm                 NAT main
+ * @param[in,out] node           NAT node runtime
  * @param[in] thread_index       thread index
  * @param[in,out] b0             buffer containing packet to be translated
  * @param[out] p_proto           protocol used for matching
@@ -793,14 +793,14 @@ snat_out2in_node_fn (vlib_main_t * vm,
           u32 proto0, proto1;
           snat_session_t * s0 = 0, * s1 = 0;
           clib_bihash_kv_8_8_t kv0, kv1, value0, value1;
-          
+
 	  /* Prefetch next iteration. */
 	  {
 	    vlib_buffer_t * p2, * p3;
-            
+
 	    p2 = vlib_get_buffer (vm, from[2]);
 	    p3 = vlib_get_buffer (vm, from[3]);
-            
+
 	    vlib_prefetch_buffer_header (p2, LOAD);
 	    vlib_prefetch_buffer_header (p3, LOAD);
 
@@ -828,7 +828,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           icmp0 = (icmp46_header_t *) udp0;
 
           sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index, 
+	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
                                    sw_if_index0);
 
           if (PREDICT_FALSE(ip0->ttl == 1))
@@ -852,8 +852,8 @@ snat_out2in_node_fn (vlib_main_t * vm,
 
           if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
             {
-              next0 = icmp_out2in_slow_path 
-                (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, 
+              next0 = icmp_out2in_slow_path
+                (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
                  next0, now, thread_index, &s0);
               goto trace0;
             }
@@ -862,7 +862,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           key0.port = udp0->dst_port;
           key0.protocol = proto0;
           key0.fib_index = rx_fib_index0;
-          
+
           kv0.key = key0.as_u64;
 
           if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
@@ -872,12 +872,12 @@ snat_out2in_node_fn (vlib_main_t * vm,
               if (snat_static_mapping_match(sm, key0, &sm0, 1, 0))
                 {
                   b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION];
-                  /* 
+                  /*
                    * Send DHCP packets to the ipv4 stack, or we won't
                    * be able to use dhcp client on the outside interface
                    */
-                  if (proto0 != SNAT_PROTOCOL_UDP 
-                      || (udp0->dst_port 
+                  if (proto0 != SNAT_PROTOCOL_UDP
+                      || (udp0->dst_port
                           != clib_host_to_net_u16(UDP_DST_PORT_dhcp_to_client)))
                     next0 = SNAT_OUT2IN_NEXT_DROP;
                   goto trace0;
@@ -946,10 +946,10 @@ snat_out2in_node_fn (vlib_main_t * vm,
             }
         trace0:
 
-          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) 
-                            && (b0->flags & VLIB_BUFFER_IS_TRACED))) 
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
             {
-              snat_out2in_trace_t *t = 
+              snat_out2in_trace_t *t =
                  vlib_add_trace (vm, node, b0, sizeof (*t));
               t->sw_if_index = sw_if_index0;
               t->next_index = next0;
@@ -967,7 +967,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           icmp1 = (icmp46_header_t *) udp1;
 
           sw_if_index1 = vnet_buffer(b1)->sw_if_index[VLIB_RX];
-	  rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index, 
+	  rx_fib_index1 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
                                    sw_if_index1);
 
           if (PREDICT_FALSE(ip1->ttl == 1))
@@ -991,8 +991,8 @@ snat_out2in_node_fn (vlib_main_t * vm,
 
           if (PREDICT_FALSE (proto1 == SNAT_PROTOCOL_ICMP))
             {
-              next1 = icmp_out2in_slow_path 
-                (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node, 
+              next1 = icmp_out2in_slow_path
+                (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
                  next1, now, thread_index, &s1);
               goto trace1;
             }
@@ -1001,7 +1001,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           key1.port = udp1->dst_port;
           key1.protocol = proto1;
           key1.fib_index = rx_fib_index1;
-          
+
           kv1.key = key1.as_u64;
 
           if (clib_bihash_search_8_8 (&sm->out2in, &kv1, &value1))
@@ -1011,12 +1011,12 @@ snat_out2in_node_fn (vlib_main_t * vm,
               if (snat_static_mapping_match(sm, key1, &sm1, 1, 0))
                 {
                   b1->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION];
-                  /* 
+                  /*
                    * Send DHCP packets to the ipv4 stack, or we won't
                    * be able to use dhcp client on the outside interface
                    */
-                  if (proto1 != SNAT_PROTOCOL_UDP 
-                      || (udp1->dst_port 
+                  if (proto1 != SNAT_PROTOCOL_UDP
+                      || (udp1->dst_port
                           != clib_host_to_net_u16(UDP_DST_PORT_dhcp_to_client)))
                     next1 = SNAT_OUT2IN_NEXT_DROP;
                   goto trace1;
@@ -1085,10 +1085,10 @@ snat_out2in_node_fn (vlib_main_t * vm,
             }
         trace1:
 
-          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) 
-                            && (b1->flags & VLIB_BUFFER_IS_TRACED))) 
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b1->flags & VLIB_BUFFER_IS_TRACED)))
             {
-              snat_out2in_trace_t *t = 
+              snat_out2in_trace_t *t =
                  vlib_add_trace (vm, node, b1, sizeof (*t));
               t->sw_if_index = sw_if_index1;
               t->next_index = next1;
@@ -1123,7 +1123,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           u32 proto0;
           snat_session_t * s0 = 0;
           clib_bihash_kv_8_8_t kv0, value0;
-          
+
           /* speculatively enqueue b0 to the current next frame */
 	  bi0 = from[0];
 	  to_next[0] = bi0;
@@ -1142,7 +1142,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           icmp0 = (icmp46_header_t *) udp0;
 
           sw_if_index0 = vnet_buffer(b0)->sw_if_index[VLIB_RX];
-	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index, 
+	  rx_fib_index0 = vec_elt (sm->ip4_main->fib_index_by_sw_if_index,
                                    sw_if_index0);
 
           proto0 = ip_proto_to_snat_proto (ip0->protocol);
@@ -1166,8 +1166,8 @@ snat_out2in_node_fn (vlib_main_t * vm,
 
           if (PREDICT_FALSE (proto0 == SNAT_PROTOCOL_ICMP))
             {
-              next0 = icmp_out2in_slow_path 
-                (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node, 
+              next0 = icmp_out2in_slow_path
+                (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
                  next0, now, thread_index, &s0);
               goto trace00;
             }
@@ -1176,7 +1176,7 @@ snat_out2in_node_fn (vlib_main_t * vm,
           key0.port = udp0->dst_port;
           key0.protocol = proto0;
           key0.fib_index = rx_fib_index0;
-          
+
           kv0.key = key0.as_u64;
 
           if (clib_bihash_search_8_8 (&sm->out2in, &kv0, &value0))
@@ -1186,12 +1186,12 @@ snat_out2in_node_fn (vlib_main_t * vm,
               if (snat_static_mapping_match(sm, key0, &sm0, 1, 0))
                 {
                   b0->error = node->errors[SNAT_OUT2IN_ERROR_NO_TRANSLATION];
-                  /* 
+                  /*
                    * Send DHCP packets to the ipv4 stack, or we won't
                    * be able to use dhcp client on the outside interface
                    */
-                  if (proto0 != SNAT_PROTOCOL_UDP 
-                      || (udp0->dst_port 
+                  if (proto0 != SNAT_PROTOCOL_UDP
+                      || (udp0->dst_port
                           != clib_host_to_net_u16(UDP_DST_PORT_dhcp_to_client)))
 
                     next0 = SNAT_OUT2IN_NEXT_DROP;
@@ -1261,10 +1261,10 @@ snat_out2in_node_fn (vlib_main_t * vm,
             }
         trace00:
 
-          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE) 
-                            && (b0->flags & VLIB_BUFFER_IS_TRACED))) 
+          if (PREDICT_FALSE((node->flags & VLIB_NODE_FLAG_TRACE)
+                            && (b0->flags & VLIB_BUFFER_IS_TRACED)))
             {
-              snat_out2in_trace_t *t = 
+              snat_out2in_trace_t *t =
                  vlib_add_trace (vm, node, b0, sizeof (*t));
               t->sw_if_index = sw_if_index0;
               t->next_index = next0;
@@ -1284,24 +1284,24 @@ snat_out2in_node_fn (vlib_main_t * vm,
       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
     }
 
-  vlib_node_increment_counter (vm, snat_out2in_node.index, 
-                               SNAT_OUT2IN_ERROR_OUT2IN_PACKETS, 
+  vlib_node_increment_counter (vm, snat_out2in_node.index,
+                               SNAT_OUT2IN_ERROR_OUT2IN_PACKETS,
                                pkts_processed);
   return frame->n_vectors;
 }
 
 VLIB_REGISTER_NODE (snat_out2in_node) = {
   .function = snat_out2in_node_fn,
-  .name = "snat-out2in",
+  .name = "nat44-out2in",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_out2in_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  
+
   .n_errors = ARRAY_LEN(snat_out2in_error_strings),
   .error_strings = snat_out2in_error_strings,
 
   .runtime_data_bytes = sizeof (snat_runtime_t),
-  
+
   .n_next_nodes = SNAT_OUT2IN_N_NEXT,
 
   /* edit / add dispositions here */
@@ -1779,7 +1779,7 @@ snat_det_out2in_node_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_det_out2in_node) = {
   .function = snat_det_out2in_node_fn,
-  .name = "snat-det-out2in",
+  .name = "nat44-det-out2in",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_out2in_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -1801,11 +1801,11 @@ VLIB_REGISTER_NODE (snat_det_out2in_node) = {
 VLIB_NODE_FUNCTION_MULTIARCH (snat_det_out2in_node, snat_det_out2in_node_fn);
 
 /**
- * Get address and port values to be used for packet SNAT translation
+ * Get address and port values to be used for ICMP packet translation
  * and create session if needed
  *
- * @param[in,out] sm             SNAT main
- * @param[in,out] node           SNAT node runtime
+ * @param[in,out] sm             NAT main
+ * @param[in,out] node           NAT node runtime
  * @param[in] thread_index       thread index
  * @param[in,out] b0             buffer containing packet to be translated
  * @param[out] p_proto           protocol used for matching
@@ -2089,11 +2089,11 @@ snat_out2in_worker_handoff_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_out2in_worker_handoff_node) = {
   .function = snat_out2in_worker_handoff_fn,
-  .name = "snat-out2in-worker-handoff",
+  .name = "nat44-out2in-worker-handoff",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_out2in_worker_handoff_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  
+
   .n_next_nodes = 1,
 
   .next_nodes = {
@@ -2105,7 +2105,7 @@ VLIB_NODE_FUNCTION_MULTIARCH (snat_out2in_worker_handoff_node, snat_out2in_worke
 
 static uword
 snat_out2in_fast_node_fn (vlib_main_t * vm,
-	        	  vlib_node_runtime_t * node,
+                          vlib_node_runtime_t * node,
 		          vlib_frame_t * frame)
 {
   u32 n_left_from, * from, * to_next;
@@ -2272,16 +2272,16 @@ snat_out2in_fast_node_fn (vlib_main_t * vm,
 
 VLIB_REGISTER_NODE (snat_out2in_fast_node) = {
   .function = snat_out2in_fast_node_fn,
-  .name = "snat-out2in-fast",
+  .name = "nat44-out2in-fast",
   .vector_size = sizeof (u32),
   .format_trace = format_snat_out2in_fast_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
-  
+
   .n_errors = ARRAY_LEN(snat_out2in_error_strings),
   .error_strings = snat_out2in_error_strings,
 
   .runtime_data_bytes = sizeof (snat_runtime_t),
-  
+
   .n_next_nodes = SNAT_OUT2IN_N_NEXT,
 
   /* edit / add dispositions here */
diff --git a/src/plugins/snat.am b/src/plugins/snat.am
deleted file mode 100644
index 6b75f3d265e..00000000000
--- a/src/plugins/snat.am
+++ /dev/null
@@ -1,41 +0,0 @@
-
-# Copyright (c) <current-year> <your-organization>
-# 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.
-
-vppapitestplugins_LTLIBRARIES += snat_test_plugin.la
-vppplugins_LTLIBRARIES += snat_plugin.la
-
-snat_plugin_la_SOURCES = snat/snat.c		\
-        snat/snat_api.c				\
-        snat/in2out.c				\
-        snat/out2in.c				\
-	snat/snat_plugin.api.h			\
-        snat/snat_ipfix_logging.c		\
-        snat/snat_det.c               		\
-        snat/nat64.c                  		\
-        snat/nat64_cli.c              		\
-        snat/nat64_in2out.c           		\
-        snat/nat64_out2in.c           		\
-        snat/nat64_db.c
-
-API_FILES += snat/snat.api
-
-nobase_apiinclude_HEADERS +=		\
-  snat/snat_all_api_h.h			\
-  snat/snat_msg_enum.h			\
-  snat/snat.api.h
-
-snat_test_plugin_la_SOURCES = \
-  snat/snat_test.c snat/snat_plugin.api.h
-
-# vi:syntax=automake
diff --git a/src/scripts/vnet/snat b/src/scripts/vnet/nat44
index a711519ecdf..3292b565e18 100644
--- a/src/scripts/vnet/snat
+++ b/src/scripts/vnet/nat44
@@ -30,7 +30,7 @@ packet-generator new {
   }
 }
 
-snat add address 172.16.1.3
+nat44 add address 172.16.1.3
 set int ip address pg0 10.0.0.1/24
 set int ip address pg1 172.16.1.1/24
 set int state pg0 up
@@ -38,4 +38,4 @@ set int state pg1 up
 set ip arp static pg0 10.0.0.3 abcd.abcd.abcd
 set ip arp static pg0 10.0.0.4 abcd.abcd.abcd
 set ip arp static pg1 172.16.1.2 cdef.abcd.abcd
-set int snat in pg0 out pg1
+set int nat44 in pg0 out pg1
diff --git a/src/scripts/vnet/snat_det b/src/scripts/vnet/nat44_det
index d1361bb1e7a..629772e69f4 100644
--- a/src/scripts/vnet/snat_det
+++ b/src/scripts/vnet/nat44_det
@@ -96,7 +96,7 @@ packet-generator new {
   }
 }
 
-snat deterministic add in 10.0.0.0/21 out 1.1.1.2/32
+nat44 deterministic add in 10.0.0.0/21 out 1.1.1.2/32
 set int ip address pg0 10.0.0.1/24
 set int ip address pg1 172.16.1.1/24
 set int state pg0 up
@@ -104,5 +104,5 @@ set int state pg1 up
 set ip arp static pg0 10.0.0.3 abcd.abcd.abcd
 set ip arp static pg0 10.0.0.4 abcd.abcd.abcd
 set ip arp static pg1 172.16.1.2 cdef.abcd.abcd
-set int snat in pg0 out pg1
+set int nat44 in pg0 out pg1
 trace add pg-input 10
diff --git a/src/scripts/vnet/snat_static b/src/scripts/vnet/nat44_static
index 8fe48bffaaa..2b8f25ec20c 100644
--- a/src/scripts/vnet/snat_static
+++ b/src/scripts/vnet/nat44_static
@@ -32,13 +32,13 @@ packet-generator new {
   }
 }
 
-snat add address 172.16.1.3
-snat add static mapping local 10.0.0.3 external 172.16.1.3
+nat44 add address 172.16.1.3
+nat44 add static mapping local 10.0.0.3 external 172.16.1.3
 set int ip address pg0 10.0.0.1/24
 set int ip address pg1 172.16.1.1/24
 set int state pg0 up
 set int state pg1 up
 set ip arp static pg0 10.0.0.3 abcd.abcd.abcd
 set ip arp static pg1 172.16.1.2 cdef.abcd.abcd
-set int snat in pg0 out pg1
+set int nat44 in pg0 out pg1
 trace add pg-input 10
diff --git a/src/scripts/vnet/snat_static_with_port b/src/scripts/vnet/nat44_static_with_port
index f646145a5bf..15bef1be3ba 100644
--- a/src/scripts/vnet/snat_static_with_port
+++ b/src/scripts/vnet/nat44_static_with_port
@@ -32,13 +32,13 @@ packet-generator new {
   }
 }
 
-snat add address 172.16.1.3
-snat add static mapping local 10.0.0.3 3000 external 172.16.1.3 3000
+nat44 add address 172.16.1.3
+nat44 add static mapping local 10.0.0.3 3000 external 172.16.1.3 3000
 set int ip address pg0 10.0.0.1/24
 set int ip address pg1 172.16.1.1/24
 set int state pg0 up
 set int state pg1 up
 set ip arp static pg0 10.0.0.3 abcd.abcd.abcd
 set ip arp static pg1 172.16.1.2 cdef.abcd.abcd
-set int snat in pg0 out pg1
+set int nat44 in pg0 out pg1
 trace add pg-input 10
diff --git a/src/vpp-api/java/Makefile.am b/src/vpp-api/java/Makefile.am
index e0f5203d7ad..637bb774f6e 100644
--- a/src/vpp-api/java/Makefile.am
+++ b/src/vpp-api/java/Makefile.am
@@ -169,23 +169,23 @@ jvpp-pppoe/io_fd_vpp_jvpp_pppoe_JVppPppoeImpl.h: $(jvpp_registry_ok) $(jvpp_pppo
 endif
 
 #
-# SNAT Plugin
+# NAT Plugin
 #
-if ENABLE_SNAT_PLUGIN
-noinst_LTLIBRARIES += libjvpp_snat.la
-libjvpp_snat_la_SOURCES = jvpp-snat/jvpp_snat.c
-libjvpp_snat_la_CPPFLAGS = -Ijvpp-snat
-libjvpp_snat_la_LIBADD = $(JVPP_LIBS)
-libjvpp_snat_la_DEPENDENCIES = libjvpp_common.la
+if ENABLE_NAT_PLUGIN
+noinst_LTLIBRARIES += libjvpp_nat.la
+libjvpp_nat_la_SOURCES = jvpp-nat/jvpp_nat.c
+libjvpp_nat_la_CPPFLAGS = -Ijvpp-nat
+libjvpp_nat_la_LIBADD = $(JVPP_LIBS)
+libjvpp_nat_la_DEPENDENCIES = libjvpp_common.la
 
-BUILT_SOURCES += jvpp-snat/io_fd_vpp_jvpp_snat_JVppSnatImpl.h
-JAR_FILES += jvpp-snat-$(PACKAGE_VERSION).jar
-CLEANDIRS += jvpp-snat/target
+BUILT_SOURCES += jvpp-nat/io_fd_vpp_jvpp_nat_JVppNatImpl.h
+JAR_FILES += jvpp-nat-$(PACKAGE_VERSION).jar
+CLEANDIRS += jvpp-nat/target
 
-jvpp_snat_json_files = @top_builddir@/plugins/snat/snat.api.json
+jvpp_nat_json_files = @top_builddir@/plugins/nat/nat.api.json
 
-jvpp-snat/io_fd_vpp_jvpp_snat_JVppSnatImpl.h: $(jvpp_registry_ok) $(jvpp_snat_json_files)
-	$(call japigen,snat,JVppSnatImpl)
+jvpp-nat/io_fd_vpp_jvpp_nat_JVppNatImpl.h: $(jvpp_registry_ok) $(jvpp_nat_json_files)
+	$(call japigen,nat,JVppNatImpl)
 endif
 
 #
diff --git a/src/vpp-api/java/jvpp-snat/io/fd/vpp/jvpp/snat/examples/CallbackApiExample.java b/src/vpp-api/java/jvpp-nat/io/fd/vpp/jvpp/nat/examples/CallbackApiExample.java
index f4a2943fc8e..e4d5cb3370c 100644
--- a/src/vpp-api/java/jvpp-snat/io/fd/vpp/jvpp/snat/examples/CallbackApiExample.java
+++ b/src/vpp-api/java/jvpp-nat/io/fd/vpp/jvpp/nat/examples/CallbackApiExample.java
@@ -14,24 +14,24 @@
  * limitations under the License.
  */
 
-package io.fd.vpp.jvpp.snat.examples;
+package io.fd.vpp.jvpp.nat.examples;
 
 import io.fd.vpp.jvpp.JVpp;
 import io.fd.vpp.jvpp.JVppRegistry;
 import io.fd.vpp.jvpp.JVppRegistryImpl;
 import io.fd.vpp.jvpp.VppCallbackException;
-import io.fd.vpp.jvpp.snat.JVppSnatImpl;
-import io.fd.vpp.jvpp.snat.callback.SnatInterfaceAddDelFeatureCallback;
-import io.fd.vpp.jvpp.snat.dto.SnatInterfaceAddDelFeature;
-import io.fd.vpp.jvpp.snat.dto.SnatInterfaceAddDelFeatureReply;
+import io.fd.vpp.jvpp.nat.JVppNatImpl;
+import io.fd.vpp.jvpp.nat.callback.Nat44InterfaceAddDelFeatureCallback;
+import io.fd.vpp.jvpp.nat.dto.Nat44InterfaceAddDelFeature;
+import io.fd.vpp.jvpp.nat.dto.Nat44InterfaceAddDelFeatureReply;
 
 public class CallbackApiExample {
 
-    static class TestCallback implements SnatInterfaceAddDelFeatureCallback {
+    static class TestCallback implements Nat44InterfaceAddDelFeatureCallback {
 
         @Override
-        public void onSnatInterfaceAddDelFeatureReply(final SnatInterfaceAddDelFeatureReply msg) {
-            System.out.printf("Received SnatInterfaceAddDelFeatureReply: context=%d%n",
+        public void onNat44InterfaceAddDelFeatureReply(final Nat44InterfaceAddDelFeatureReply msg) {
+            System.out.printf("Received Nat44InterfaceAddDelFeatureReply: context=%d%n",
                 msg.context);
         }
 
@@ -47,18 +47,18 @@ public class CallbackApiExample {
     }
 
     private static void testCallbackApi() throws Exception {
-        System.out.println("Testing Java callback API for snat plugin");
-        try (final JVppRegistry registry = new JVppRegistryImpl("SnatCallbackApiTest");
-             final JVpp jvpp = new JVppSnatImpl()) {
+        System.out.println("Testing Java callback API for nat plugin");
+        try (final JVppRegistry registry = new JVppRegistryImpl("NatCallbackApiTest");
+             final JVpp jvpp = new JVppNatImpl()) {
             registry.register(jvpp, new TestCallback());
 
-            System.out.println("Sending SnatInterfaceAddDelFeature request...");
-            SnatInterfaceAddDelFeature request = new SnatInterfaceAddDelFeature();
+            System.out.println("Sending Nat44InterfaceAddDelFeature request...");
+            Nat44InterfaceAddDelFeature request = new Nat44InterfaceAddDelFeature();
             request.isAdd = 1;
             request.isInside = 1;
             request.swIfIndex = 1;
             final int result = jvpp.send(request);
-            System.out.printf("SnatInterfaceAddDelFeature send result = %d%n", result);
+            System.out.printf("Nat44InterfaceAddDelFeature send result = %d%n", result);
 
             Thread.sleep(1000);
 
diff --git a/src/vpp-api/java/jvpp-nat/io/fd/vpp/jvpp/nat/examples/Readme.txt b/src/vpp-api/java/jvpp-nat/io/fd/vpp/jvpp/nat/examples/Readme.txt
new file mode 100644
index 00000000000..ac75e04eac5
--- /dev/null
+++ b/src/vpp-api/java/jvpp-nat/io/fd/vpp/jvpp/nat/examples/Readme.txt
@@ -0,0 +1 @@
+sudo java -cp build-vpp-native/vpp/vpp-api/java/jvpp-registry-17.10.jar:build-vpp-native/vpp/vpp-api/java/jvpp-nat-17.10.jar io.fd.vpp.jvpp.nat.examples.CallbackApiExample
diff --git a/src/vpp-api/java/jvpp-snat/jvpp_snat.c b/src/vpp-api/java/jvpp-nat/jvpp_nat.c
index 5fd6a88b36c..85217f04a22 100644
--- a/src/vpp-api/java/jvpp-snat/jvpp_snat.c
+++ b/src/vpp-api/java/jvpp-nat/jvpp_nat.c
@@ -15,9 +15,9 @@
 
 #include <vnet/vnet.h>
 
-#include <snat/snat_msg_enum.h>
+#include <nat/nat_msg_enum.h>
 #define vl_typedefs             /* define message structures */
-#include <snat/snat_all_api_h.h>
+#include <nat/nat_all_api_h.h>
 #undef vl_typedefs
 
 #include <vnet/api_errno.h>
@@ -32,19 +32,19 @@
 
 #include <jvpp-common/jvpp_common.h>
 
-#include "jvpp-snat/io_fd_vpp_jvpp_snat_JVppSnatImpl.h"
-#include "jvpp_snat.h"
-#include "jvpp-snat/jvpp_snat_gen.h"
+#include "jvpp-nat/io_fd_vpp_jvpp_nat_JVppNatImpl.h"
+#include "jvpp_nat.h"
+#include "jvpp-nat/jvpp_nat_gen.h"
 
 /*
- * Class:     io_fd_vpp_jvpp_snat_JVppsnatImpl
+ * Class:     io_fd_vpp_jvpp_nat_JVppNatImpl
  * Method:    init0
  * Signature: (JI)V
  */
-JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_init0
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_nat_JVppNatImpl_init0
   (JNIEnv *env, jclass clazz, jobject callback, jlong queue_address, jint my_client_index) {
-  snat_main_t * plugin_main = &snat_main;
-  clib_warning ("Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_init0");
+  nat_main_t * plugin_main = &nat_main;
+  clib_warning ("Java_io_fd_vpp_jvpp_nat_JVppNatImpl_init0");
 
   plugin_main->my_client_index = my_client_index;
   plugin_main->vl_input_queue = uword_to_pointer (queue_address, unix_shared_memory_queue_t *);
@@ -69,9 +69,9 @@ JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_init0
   #undef _
 }
 
-JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_snat_JVppSnatImpl_close0
+JNIEXPORT void JNICALL Java_io_fd_vpp_jvpp_nat_JVppNatImpl_close0
 (JNIEnv *env, jclass clazz) {
-  snat_main_t * plugin_main = &snat_main;
+  nat_main_t * plugin_main = &nat_main;
 
     // cleanup:
     (*env)->DeleteGlobalRef(env, plugin_main->callbackClass);
diff --git a/src/vpp-api/java/jvpp-snat/jvpp_snat.h b/src/vpp-api/java/jvpp-nat/jvpp_nat.h
index 7739a4114c1..c8f6b683fea 100644
--- a/src/vpp-api/java/jvpp-snat/jvpp_snat.h
+++ b/src/vpp-api/java/jvpp-nat/jvpp_nat.h
@@ -12,8 +12,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-#ifndef __included_jvpp_snat_h__
-#define __included_jvpp_snat_h__
+#ifndef __included_jvpp_nat_h__
+#define __included_jvpp_nat_h__
 
 #include <vnet/vnet.h>
 #include <vnet/ip/ip.h>
@@ -22,7 +22,7 @@
 #include <vlibmemory/api.h>
 #include <jni.h>
 
-/* Global state for JVPP-SNAT */
+/* Global state for JVPP-NAT */
 typedef struct {
     /* Pointer to shared memory queue */
     unix_shared_memory_queue_t * vl_input_queue;
@@ -34,9 +34,9 @@ typedef struct {
     jobject callbackObject;
     jclass callbackClass;
 
-} snat_main_t;
+} nat_main_t;
 
-snat_main_t snat_main __attribute__((aligned (64)));
+nat_main_t nat_main __attribute__((aligned (64)));
 
 
-#endif /* __included_jvpp_snat_h__ */
+#endif /* __included_jvpp_nat_h__ */
diff --git a/src/vpp-api/java/jvpp-snat/io/fd/vpp/jvpp/snat/examples/Readme.txt b/src/vpp-api/java/jvpp-snat/io/fd/vpp/jvpp/snat/examples/Readme.txt
deleted file mode 100644
index 470850eec11..00000000000
--- a/src/vpp-api/java/jvpp-snat/io/fd/vpp/jvpp/snat/examples/Readme.txt
+++ /dev/null
@@ -1 +0,0 @@
-sudo java -cp build-vpp-native/vpp/vpp-api/java/jvpp-registry-17.10.jar:build-vpp-native/vpp/vpp-api/java/jvpp-snat-17.10.jar io.fd.vpp.jvpp.snat.examples.CallbackApiExample
diff --git a/test/test_snat.py b/test/test_nat.py
index eb47bbb81d2..0d622b085e6 100644
--- a/test/test_snat.py
+++ b/test/test_nat.py
@@ -18,7 +18,7 @@ from time import sleep
 
 
 class MethodHolder(VppTestCase):
-    """ SNAT create capture and verify method holder """
+    """ NAT create capture and verify method holder """
 
     @classmethod
     def setUpClass(cls):
@@ -241,11 +241,11 @@ class MethodHolder(VppTestCase):
         Create packet stream for outside network
 
         :param out_if: Outside interface
-        :param dst_ip: Destination IP address (Default use global SNAT address)
+        :param dst_ip: Destination IP address (Default use global NAT address)
         :param ttl: TTL of generated packets
         """
         if dst_ip is None:
-            dst_ip = self.snat_addr
+            dst_ip = self.nat_addr
         pkts = []
         # TCP
         p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
@@ -273,13 +273,13 @@ class MethodHolder(VppTestCase):
         Verify captured packets on outside network
 
         :param capture: Captured packets
-        :param nat_ip: Translated IP address (Default use global SNAT address)
+        :param nat_ip: Translated IP address (Default use global NAT address)
         :param same_port: Sorce port number is not translated (Default False)
         :param packet_num: Expected number of packets (Default 3)
         :param dst_ip: Destination IP address (Default do not verify)
         """
         if nat_ip is None:
-            nat_ip = self.snat_addr
+            nat_ip = self.nat_addr
         self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
@@ -399,13 +399,13 @@ class MethodHolder(VppTestCase):
 
         :param capture: Captured packets
         :param src_ip: Translated IP address or IP address of VPP
-                       (Default use global SNAT address)
+                       (Default use global NAT address)
         :param packet_num: Expected number of packets (Default 3)
         :param icmp_type: Type of error ICMP packet
                           we are expecting (Default 11)
         """
         if src_ip is None:
-            src_ip = self.snat_addr
+            src_ip = self.nat_addr
         self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
@@ -480,7 +480,7 @@ class MethodHolder(VppTestCase):
             # sourceIPv4Address
             self.assertEqual(self.pg0.remote_ip4n, record[8])
             # postNATSourceIPv4Address
-            self.assertEqual(socket.inet_pton(socket.AF_INET, self.snat_addr),
+            self.assertEqual(socket.inet_pton(socket.AF_INET, self.nat_addr),
                              record[225])
             # ingressVRFID
             self.assertEqual(struct.pack("!I", 0), record[234])
@@ -518,12 +518,12 @@ class MethodHolder(VppTestCase):
         self.assertEqual(struct.pack("!I", 0), record[283])
 
 
-class TestSNAT(MethodHolder):
-    """ SNAT Test Cases """
+class TestNAT44(MethodHolder):
+    """ NAT44 Test Cases """
 
     @classmethod
     def setUpClass(cls):
-        super(TestSNAT, cls).setUpClass()
+        super(TestNAT44, cls).setUpClass()
 
         try:
             cls.tcp_port_in = 6303
@@ -532,7 +532,7 @@ class TestSNAT(MethodHolder):
             cls.udp_port_out = 6304
             cls.icmp_id_in = 6305
             cls.icmp_id_out = 6305
-            cls.snat_addr = '10.0.0.3'
+            cls.nat_addr = '10.0.0.3'
             cls.ipfix_src_port = 4739
             cls.ipfix_domain_id = 1
 
@@ -570,12 +570,12 @@ class TestSNAT(MethodHolder):
             cls.pg8.admin_up()
 
         except Exception:
-            super(TestSNAT, cls).tearDownClass()
+            super(TestNAT44, cls).tearDownClass()
             raise
 
-    def clear_snat(self):
+    def clear_nat44(self):
         """
-        Clear SNAT configuration.
+        Clear NAT44 configuration.
         """
         # I found no elegant way to do this
         self.vapi.ip_add_del_route(dst_address=self.pg7.remote_ip4n,
@@ -600,50 +600,51 @@ class TestSNAT(MethodHolder):
         if self.pg7.has_ip4_config:
             self.pg7.unconfig_ip4()
 
-        interfaces = self.vapi.snat_interface_addr_dump()
+        interfaces = self.vapi.nat44_interface_addr_dump()
         for intf in interfaces:
-            self.vapi.snat_add_interface_addr(intf.sw_if_index, is_add=0)
+            self.vapi.nat44_add_interface_addr(intf.sw_if_index, is_add=0)
 
-        self.vapi.snat_ipfix(enable=0, src_port=self.ipfix_src_port,
-                             domain_id=self.ipfix_domain_id)
+        self.vapi.nat_ipfix(enable=0, src_port=self.ipfix_src_port,
+                            domain_id=self.ipfix_domain_id)
         self.ipfix_src_port = 4739
         self.ipfix_domain_id = 1
 
-        interfaces = self.vapi.snat_interface_dump()
+        interfaces = self.vapi.nat44_interface_dump()
         for intf in interfaces:
-            self.vapi.snat_interface_add_del_feature(intf.sw_if_index,
-                                                     intf.is_inside,
-                                                     is_add=0)
+            self.vapi.nat44_interface_add_del_feature(intf.sw_if_index,
+                                                      intf.is_inside,
+                                                      is_add=0)
 
-        interfaces = self.vapi.snat_interface_output_feature_dump()
+        interfaces = self.vapi.nat44_interface_output_feature_dump()
         for intf in interfaces:
-            self.vapi.snat_interface_add_del_output_feature(intf.sw_if_index,
-                                                            intf.is_inside,
-                                                            is_add=0)
+            self.vapi.nat44_interface_add_del_output_feature(intf.sw_if_index,
+                                                             intf.is_inside,
+                                                             is_add=0)
 
-        static_mappings = self.vapi.snat_static_mapping_dump()
+        static_mappings = self.vapi.nat44_static_mapping_dump()
         for sm in static_mappings:
-            self.vapi.snat_add_static_mapping(sm.local_ip_address,
-                                              sm.external_ip_address,
-                                              local_port=sm.local_port,
-                                              external_port=sm.external_port,
-                                              addr_only=sm.addr_only,
-                                              vrf_id=sm.vrf_id,
-                                              protocol=sm.protocol,
-                                              is_add=0)
-
-        adresses = self.vapi.snat_address_dump()
+            self.vapi.nat44_add_del_static_mapping(
+                sm.local_ip_address,
+                sm.external_ip_address,
+                local_port=sm.local_port,
+                external_port=sm.external_port,
+                addr_only=sm.addr_only,
+                vrf_id=sm.vrf_id,
+                protocol=sm.protocol,
+                is_add=0)
+
+        adresses = self.vapi.nat44_address_dump()
         for addr in adresses:
-            self.vapi.snat_add_address_range(addr.ip_address,
-                                             addr.ip_address,
-                                             is_add=0)
-
-    def snat_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
-                                local_port=0, external_port=0, vrf_id=0,
-                                is_add=1, external_sw_if_index=0xFFFFFFFF,
-                                proto=0):
+            self.vapi.nat44_add_del_address_range(addr.ip_address,
+                                                  addr.ip_address,
+                                                  is_add=0)
+
+    def nat44_add_static_mapping(self, local_ip, external_ip='0.0.0.0',
+                                 local_port=0, external_port=0, vrf_id=0,
+                                 is_add=1, external_sw_if_index=0xFFFFFFFF,
+                                 proto=0):
         """
-        Add/delete S-NAT static mapping
+        Add/delete NAT44 static mapping
 
         :param local_ip: Local IP address
         :param external_ip: External IP address
@@ -659,7 +660,7 @@ class TestSNAT(MethodHolder):
             addr_only = 0
         l_ip = socket.inet_pton(socket.AF_INET, local_ip)
         e_ip = socket.inet_pton(socket.AF_INET, external_ip)
-        self.vapi.snat_add_static_mapping(
+        self.vapi.nat44_add_del_static_mapping(
             l_ip,
             e_ip,
             external_sw_if_index,
@@ -670,24 +671,24 @@ class TestSNAT(MethodHolder):
             proto,
             is_add)
 
-    def snat_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF):
+    def nat44_add_address(self, ip, is_add=1, vrf_id=0xFFFFFFFF):
         """
-        Add/delete S-NAT address
+        Add/delete NAT44 address
 
         :param ip: IP address
         :param is_add: 1 if add, 0 if delete (Default add)
         """
-        snat_addr = socket.inet_pton(socket.AF_INET, ip)
-        self.vapi.snat_add_address_range(snat_addr, snat_addr, is_add,
-                                         vrf_id=vrf_id)
+        nat_addr = socket.inet_pton(socket.AF_INET, ip)
+        self.vapi.nat44_add_del_address_range(nat_addr, nat_addr, is_add,
+                                              vrf_id=vrf_id)
 
     def test_dynamic(self):
-        """ SNAT dynamic translation test """
+        """ NAT44 dynamic translation test """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -706,12 +707,12 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg0)
 
     def test_dynamic_icmp_errors_in2out_ttl_1(self):
-        """ SNAT handling of client packets with TTL=1 """
+        """ NAT44 handling of client packets with TTL=1 """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # Client side - generate traffic
         pkts = self.create_stream_in(self.pg0, self.pg1, ttl=1)
@@ -724,12 +725,12 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in_with_icmp_errors(capture, self.pg0)
 
     def test_dynamic_icmp_errors_out2in_ttl_1(self):
-        """ SNAT handling of server packets with TTL=1 """
+        """ NAT44 handling of server packets with TTL=1 """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # Client side - create sessions
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -751,12 +752,12 @@ class TestSNAT(MethodHolder):
                                                  src_ip=self.pg1.local_ip4)
 
     def test_dynamic_icmp_errors_in2out_ttl_2(self):
-        """ SNAT handling of error responses to client packets with TTL=2 """
+        """ NAT44 handling of error responses to client packets with TTL=2 """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # Client side - generate traffic
         pkts = self.create_stream_in(self.pg0, self.pg1, ttl=2)
@@ -767,7 +768,7 @@ class TestSNAT(MethodHolder):
         # Server side - simulate ICMP type 11 response
         capture = self.pg1.get_capture(len(pkts))
         pkts = [Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
-                IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+                IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
                 ICMP(type=11) / packet[IP] for packet in capture]
         self.pg1.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
@@ -778,12 +779,12 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in_with_icmp_errors(capture, self.pg0)
 
     def test_dynamic_icmp_errors_out2in_ttl_2(self):
-        """ SNAT handling of error responses to server packets with TTL=2 """
+        """ NAT44 handling of error responses to server packets with TTL=2 """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # Client side - create sessions
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -813,12 +814,12 @@ class TestSNAT(MethodHolder):
         self.verify_capture_out_with_icmp_errors(capture)
 
     def test_ping_out_interface_from_outside(self):
-        """ Ping SNAT out interface from outside network """
+        """ Ping NAT44 out interface from outside network """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
              IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) /
@@ -843,14 +844,14 @@ class TestSNAT(MethodHolder):
     def test_ping_internal_host_from_outside(self):
         """ Ping internal host from outside network """
 
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # out2in
         pkt = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
-               IP(src=self.pg1.remote_ip4, dst=self.snat_addr, ttl=64) /
+               IP(src=self.pg1.remote_ip4, dst=self.nat_addr, ttl=64) /
                ICMP(id=self.icmp_id_out, type='echo-request'))
         self.pg1.add_stream(pkt)
         self.pg_enable_capture(self.pg_interfaces)
@@ -871,17 +872,17 @@ class TestSNAT(MethodHolder):
         self.assert_equal(capture[0][IP].proto, IP_PROTOS.icmp)
 
     def test_static_in(self):
-        """ SNAT 1:1 NAT initialized from inside network """
+        """ 1:1 NAT initialized from inside network """
 
         nat_ip = "10.0.0.10"
         self.tcp_port_out = 6303
         self.udp_port_out = 6304
         self.icmp_id_out = 6305
 
-        self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -900,17 +901,17 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg0)
 
     def test_static_out(self):
-        """ SNAT 1:1 NAT initialized from outside network """
+        """ 1:1 NAT initialized from outside network """
 
         nat_ip = "10.0.0.20"
         self.tcp_port_out = 6303
         self.udp_port_out = 6304
         self.icmp_id_out = 6305
 
-        self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # out2in
         pkts = self.create_stream_out(self.pg1, nat_ip)
@@ -929,25 +930,25 @@ class TestSNAT(MethodHolder):
         self.verify_capture_out(capture, nat_ip, True)
 
     def test_static_with_port_in(self):
-        """ SNAT 1:1 NAT with port initialized from inside network """
+        """ 1:1 NAPT initialized from inside network """
 
         self.tcp_port_out = 3606
         self.udp_port_out = 3607
         self.icmp_id_out = 3608
 
-        self.snat_add_address(self.snat_addr)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr,
-                                     self.tcp_port_in, self.tcp_port_out,
-                                     proto=IP_PROTOS.tcp)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr,
-                                     self.udp_port_in, self.udp_port_out,
-                                     proto=IP_PROTOS.udp)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr,
-                                     self.icmp_id_in, self.icmp_id_out,
-                                     proto=IP_PROTOS.icmp)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.tcp_port_in, self.tcp_port_out,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.udp_port_in, self.udp_port_out,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.icmp_id_in, self.icmp_id_out,
+                                      proto=IP_PROTOS.icmp)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -966,25 +967,25 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg0)
 
     def test_static_with_port_out(self):
-        """ SNAT 1:1 NAT with port initialized from outside network """
+        """ 1:1 NAPT initialized from outside network """
 
         self.tcp_port_out = 30606
         self.udp_port_out = 30607
         self.icmp_id_out = 30608
 
-        self.snat_add_address(self.snat_addr)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr,
-                                     self.tcp_port_in, self.tcp_port_out,
-                                     proto=IP_PROTOS.tcp)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr,
-                                     self.udp_port_in, self.udp_port_out,
-                                     proto=IP_PROTOS.udp)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, self.snat_addr,
-                                     self.icmp_id_in, self.icmp_id_out,
-                                     proto=IP_PROTOS.icmp)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.tcp_port_in, self.tcp_port_out,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.udp_port_in, self.udp_port_out,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, self.nat_addr,
+                                      self.icmp_id_in, self.icmp_id_out,
+                                      proto=IP_PROTOS.icmp)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # out2in
         pkts = self.create_stream_out(self.pg1)
@@ -1003,7 +1004,7 @@ class TestSNAT(MethodHolder):
         self.verify_capture_out(capture)
 
     def test_static_vrf_aware(self):
-        """ SNAT 1:1 NAT VRF awareness """
+        """ 1:1 NAT VRF awareness """
 
         nat_ip1 = "10.0.0.30"
         nat_ip2 = "10.0.0.40"
@@ -1011,16 +1012,16 @@ class TestSNAT(MethodHolder):
         self.udp_port_out = 6304
         self.icmp_id_out = 6305
 
-        self.snat_add_static_mapping(self.pg4.remote_ip4, nat_ip1,
-                                     vrf_id=10)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip2,
-                                     vrf_id=10)
-        self.vapi.snat_interface_add_del_feature(self.pg3.sw_if_index,
-                                                 is_inside=0)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg4.sw_if_index)
+        self.nat44_add_static_mapping(self.pg4.remote_ip4, nat_ip1,
+                                      vrf_id=10)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip2,
+                                      vrf_id=10)
+        self.vapi.nat44_interface_add_del_feature(self.pg3.sw_if_index,
+                                                  is_inside=0)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg4.sw_if_index)
 
-        # inside interface VRF match SNAT static mapping VRF
+        # inside interface VRF match NAT44 static mapping VRF
         pkts = self.create_stream_in(self.pg4, self.pg3)
         self.pg4.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1028,7 +1029,7 @@ class TestSNAT(MethodHolder):
         capture = self.pg3.get_capture(len(pkts))
         self.verify_capture_out(capture, nat_ip1, True)
 
-        # inside interface VRF don't match SNAT static mapping VRF (packets
+        # inside interface VRF don't match NAT44 static mapping VRF (packets
         # are dropped)
         pkts = self.create_stream_in(self.pg0, self.pg3)
         self.pg0.add_stream(pkts)
@@ -1037,15 +1038,15 @@ class TestSNAT(MethodHolder):
         self.pg3.assert_nothing_captured()
 
     def test_multiple_inside_interfaces(self):
-        """ SNAT multiple inside interfaces (non-overlapping address space) """
+        """ NAT44 multiple non-overlapping address space inside interfaces """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg3.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg3.sw_if_index,
+                                                  is_inside=0)
 
-        # between two S-NAT inside interfaces (no translation)
+        # between two NAT44 inside interfaces (no translation)
         pkts = self.create_stream_in(self.pg0, self.pg1)
         self.pg0.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1053,7 +1054,7 @@ class TestSNAT(MethodHolder):
         capture = self.pg1.get_capture(len(pkts))
         self.verify_capture_no_translation(capture, self.pg0, self.pg1)
 
-        # from S-NAT inside to interface without S-NAT feature (no translation)
+        # from NAT44 inside to interface without NAT44 feature (no translation)
         pkts = self.create_stream_in(self.pg0, self.pg2)
         self.pg0.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1094,19 +1095,19 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg1)
 
     def test_inside_overlapping_interfaces(self):
-        """ SNAT multiple inside interfaces with overlapping address space """
+        """ NAT44 multiple inside interfaces with overlapping address space """
 
         static_nat_ip = "10.0.0.10"
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg3.sw_if_index,
-                                                 is_inside=0)
-        self.vapi.snat_interface_add_del_feature(self.pg4.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg5.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg6.sw_if_index)
-        self.snat_add_static_mapping(self.pg6.remote_ip4, static_nat_ip,
-                                     vrf_id=20)
-
-        # between S-NAT inside interfaces with same VRF (no translation)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg3.sw_if_index,
+                                                  is_inside=0)
+        self.vapi.nat44_interface_add_del_feature(self.pg4.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg5.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg6.sw_if_index)
+        self.nat44_add_static_mapping(self.pg6.remote_ip4, static_nat_ip,
+                                      vrf_id=20)
+
+        # between NAT44 inside interfaces with same VRF (no translation)
         pkts = self.create_stream_in(self.pg4, self.pg5)
         self.pg4.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1114,7 +1115,7 @@ class TestSNAT(MethodHolder):
         capture = self.pg5.get_capture(len(pkts))
         self.verify_capture_no_translation(capture, self.pg4, self.pg5)
 
-        # between S-NAT inside interfaces with different VRF (hairpinning)
+        # between NAT44 inside interfaces with different VRF (hairpinning)
         p = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
              IP(src=self.pg4.remote_ip4, dst=static_nat_ip) /
              TCP(sport=1234, dport=5678))
@@ -1126,7 +1127,7 @@ class TestSNAT(MethodHolder):
         try:
             ip = p[IP]
             tcp = p[TCP]
-            self.assertEqual(ip.src, self.snat_addr)
+            self.assertEqual(ip.src, self.nat_addr)
             self.assertEqual(ip.dst, self.pg6.remote_ip4)
             self.assertNotEqual(tcp.sport, 1234)
             self.assertEqual(tcp.dport, 5678)
@@ -1167,9 +1168,9 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg5)
 
         # pg5 session dump
-        addresses = self.vapi.snat_address_dump()
+        addresses = self.vapi.nat44_address_dump()
         self.assertEqual(len(addresses), 1)
-        sessions = self.vapi.snat_user_session_dump(self.pg5.remote_ip4n, 10)
+        sessions = self.vapi.nat44_user_session_dump(self.pg5.remote_ip4n, 10)
         self.assertEqual(len(sessions), 3)
         for session in sessions:
             self.assertFalse(session.is_static)
@@ -1204,13 +1205,13 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg6)
 
         # general user and session dump verifications
-        users = self.vapi.snat_user_dump()
+        users = self.vapi.nat44_user_dump()
         self.assertTrue(len(users) >= 3)
-        addresses = self.vapi.snat_address_dump()
+        addresses = self.vapi.nat44_address_dump()
         self.assertEqual(len(addresses), 1)
         for user in users:
-            sessions = self.vapi.snat_user_session_dump(user.ip_address,
-                                                        user.vrf_id)
+            sessions = self.vapi.nat44_user_session_dump(user.ip_address,
+                                                         user.vrf_id)
             for session in sessions:
                 self.assertEqual(user.ip_address, session.inside_ip_address)
                 self.assertTrue(session.total_bytes > session.total_pkts > 0)
@@ -1219,7 +1220,7 @@ class TestSNAT(MethodHolder):
                                  IP_PROTOS.icmp])
 
         # pg4 session dump
-        sessions = self.vapi.snat_user_session_dump(self.pg4.remote_ip4n, 10)
+        sessions = self.vapi.nat44_user_session_dump(self.pg4.remote_ip4n, 10)
         self.assertTrue(len(sessions) >= 4)
         for session in sessions:
             self.assertFalse(session.is_static)
@@ -1229,7 +1230,7 @@ class TestSNAT(MethodHolder):
                              addresses[0].ip_address)
 
         # pg6 session dump
-        sessions = self.vapi.snat_user_session_dump(self.pg6.remote_ip4n, 20)
+        sessions = self.vapi.nat44_user_session_dump(self.pg6.remote_ip4n, 20)
         self.assertTrue(len(sessions) >= 3)
         for session in sessions:
             self.assertTrue(session.is_static)
@@ -1242,7 +1243,7 @@ class TestSNAT(MethodHolder):
                              self.icmp_id_in])
 
     def test_hairpinning(self):
-        """ SNAT hairpinning - 1:1 NAT with port"""
+        """ NAT44 hairpinning - 1:1 NAPT """
 
         host = self.pg0.remote_hosts[0]
         server = self.pg0.remote_hosts[1]
@@ -1251,18 +1252,18 @@ class TestSNAT(MethodHolder):
         server_in_port = 5678
         server_out_port = 8765
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
         # add static mapping for server
-        self.snat_add_static_mapping(server.ip4, self.snat_addr,
-                                     server_in_port, server_out_port,
-                                     proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(server.ip4, self.nat_addr,
+                                      server_in_port, server_out_port,
+                                      proto=IP_PROTOS.tcp)
 
         # send packet from host to server
         p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
-             IP(src=host.ip4, dst=self.snat_addr) /
+             IP(src=host.ip4, dst=self.nat_addr) /
              TCP(sport=host_in_port, dport=server_out_port))
         self.pg0.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1272,7 +1273,7 @@ class TestSNAT(MethodHolder):
         try:
             ip = p[IP]
             tcp = p[TCP]
-            self.assertEqual(ip.src, self.snat_addr)
+            self.assertEqual(ip.src, self.nat_addr)
             self.assertEqual(ip.dst, server.ip4)
             self.assertNotEqual(tcp.sport, host_in_port)
             self.assertEqual(tcp.dport, server_in_port)
@@ -1284,7 +1285,7 @@ class TestSNAT(MethodHolder):
 
         # send reply from server to host
         p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
-             IP(src=server.ip4, dst=self.snat_addr) /
+             IP(src=server.ip4, dst=self.nat_addr) /
              TCP(sport=server_in_port, dport=host_out_port))
         self.pg0.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1294,7 +1295,7 @@ class TestSNAT(MethodHolder):
         try:
             ip = p[IP]
             tcp = p[TCP]
-            self.assertEqual(ip.src, self.snat_addr)
+            self.assertEqual(ip.src, self.nat_addr)
             self.assertEqual(ip.dst, host.ip4)
             self.assertEqual(tcp.sport, server_out_port)
             self.assertEqual(tcp.dport, host_in_port)
@@ -1304,7 +1305,7 @@ class TestSNAT(MethodHolder):
             raise
 
     def test_hairpinning2(self):
-        """ SNAT hairpinning - 1:1 NAT"""
+        """ NAT44 hairpinning - 1:1 NAT"""
 
         server1_nat_ip = "10.0.0.10"
         server2_nat_ip = "10.0.0.11"
@@ -1314,14 +1315,14 @@ class TestSNAT(MethodHolder):
         server_tcp_port = 22
         server_udp_port = 20
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # add static mapping for servers
-        self.snat_add_static_mapping(server1.ip4, server1_nat_ip)
-        self.snat_add_static_mapping(server2.ip4, server2_nat_ip)
+        self.nat44_add_static_mapping(server1.ip4, server1_nat_ip)
+        self.nat44_add_static_mapping(server2.ip4, server2_nat_ip)
 
         # host to server1
         pkts = []
@@ -1343,7 +1344,7 @@ class TestSNAT(MethodHolder):
         capture = self.pg0.get_capture(len(pkts))
         for packet in capture:
             try:
-                self.assertEqual(packet[IP].src, self.snat_addr)
+                self.assertEqual(packet[IP].src, self.nat_addr)
                 self.assertEqual(packet[IP].dst, server1.ip4)
                 if packet.haslayer(TCP):
                     self.assertNotEqual(packet[TCP].sport, self.tcp_port_in)
@@ -1364,15 +1365,15 @@ class TestSNAT(MethodHolder):
         # server1 to host
         pkts = []
         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IP(src=server1.ip4, dst=self.snat_addr) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
              TCP(sport=server_tcp_port, dport=self.tcp_port_out))
         pkts.append(p)
         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IP(src=server1.ip4, dst=self.snat_addr) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
              UDP(sport=server_udp_port, dport=self.udp_port_out))
         pkts.append(p)
         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IP(src=server1.ip4, dst=self.snat_addr) /
+             IP(src=server1.ip4, dst=self.nat_addr) /
              ICMP(id=self.icmp_id_out, type='echo-reply'))
         pkts.append(p)
         self.pg0.add_stream(pkts)
@@ -1472,16 +1473,16 @@ class TestSNAT(MethodHolder):
     def test_max_translations_per_user(self):
         """ MAX translations per user - recycle the least recently used """
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # get maximum number of translations per user
-        snat_config = self.vapi.snat_show_config()
+        nat44_config = self.vapi.nat_show_config()
 
         # send more than maximum number of translations per user packets
-        pkts_num = snat_config.max_translations_per_user + 5
+        pkts_num = nat44_config.max_translations_per_user + 5
         pkts = []
         for port in range(0, pkts_num):
             p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
@@ -1496,39 +1497,40 @@ class TestSNAT(MethodHolder):
         self.pg1.get_capture(pkts_num)
 
     def test_interface_addr(self):
-        """ Acquire SNAT addresses from interface """
-        self.vapi.snat_add_interface_addr(self.pg7.sw_if_index)
+        """ Acquire NAT44 addresses from interface """
+        self.vapi.nat44_add_interface_addr(self.pg7.sw_if_index)
 
         # no address in NAT pool
-        adresses = self.vapi.snat_address_dump()
+        adresses = self.vapi.nat44_address_dump()
         self.assertEqual(0, len(adresses))
 
         # configure interface address and check NAT address pool
         self.pg7.config_ip4()
-        adresses = self.vapi.snat_address_dump()
+        adresses = self.vapi.nat44_address_dump()
         self.assertEqual(1, len(adresses))
         self.assertEqual(adresses[0].ip_address[0:4], self.pg7.local_ip4n)
 
         # remove interface address and check NAT address pool
         self.pg7.unconfig_ip4()
-        adresses = self.vapi.snat_address_dump()
+        adresses = self.vapi.nat44_address_dump()
         self.assertEqual(0, len(adresses))
 
     def test_interface_addr_static_mapping(self):
         """ Static mapping with addresses from interface """
-        self.vapi.snat_add_interface_addr(self.pg7.sw_if_index)
-        self.snat_add_static_mapping('1.2.3.4',
-                                     external_sw_if_index=self.pg7.sw_if_index)
+        self.vapi.nat44_add_interface_addr(self.pg7.sw_if_index)
+        self.nat44_add_static_mapping(
+            '1.2.3.4',
+            external_sw_if_index=self.pg7.sw_if_index)
 
         # static mappings with external interface
-        static_mappings = self.vapi.snat_static_mapping_dump()
+        static_mappings = self.vapi.nat44_static_mapping_dump()
         self.assertEqual(1, len(static_mappings))
         self.assertEqual(self.pg7.sw_if_index,
                          static_mappings[0].external_sw_if_index)
 
         # configure interface address and check static mappings
         self.pg7.config_ip4()
-        static_mappings = self.vapi.snat_static_mapping_dump()
+        static_mappings = self.vapi.nat44_static_mapping_dump()
         self.assertEqual(1, len(static_mappings))
         self.assertEqual(static_mappings[0].external_ip_address[0:4],
                          self.pg7.local_ip4n)
@@ -1536,26 +1538,26 @@ class TestSNAT(MethodHolder):
 
         # remove interface address and check static mappings
         self.pg7.unconfig_ip4()
-        static_mappings = self.vapi.snat_static_mapping_dump()
+        static_mappings = self.vapi.nat44_static_mapping_dump()
         self.assertEqual(0, len(static_mappings))
 
     def test_ipfix_nat44_sess(self):
-        """ S-NAT IPFIX logging NAT44 session created/delted """
+        """ IPFIX logging NAT44 session created/delted """
         self.ipfix_domain_id = 10
         self.ipfix_src_port = 20202
         colector_port = 30303
         bind_layers(UDP, IPFIX, dport=30303)
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
         self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n,
                                      src_address=self.pg3.local_ip4n,
                                      path_mtu=512,
                                      template_interval=10,
                                      collector_port=colector_port)
-        self.vapi.snat_ipfix(domain_id=self.ipfix_domain_id,
-                             src_port=self.ipfix_src_port)
+        self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+                            src_port=self.ipfix_src_port)
 
         pkts = self.create_stream_in(self.pg0, self.pg1)
         self.pg0.add_stream(pkts)
@@ -1563,7 +1565,7 @@ class TestSNAT(MethodHolder):
         self.pg_start()
         capture = self.pg1.get_capture(len(pkts))
         self.verify_capture_out(capture)
-        self.snat_add_address(self.snat_addr, is_add=0)
+        self.nat44_add_address(self.nat_addr, is_add=0)
         self.vapi.cli("ipfix flush")  # FIXME this should be an API call
         capture = self.pg3.get_capture(3)
         ipfix = IPFIXDecoder()
@@ -1585,16 +1587,16 @@ class TestSNAT(MethodHolder):
                 self.verify_ipfix_nat44_ses(data)
 
     def test_ipfix_addr_exhausted(self):
-        """ S-NAT IPFIX logging NAT addresses exhausted """
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        """ IPFIX logging NAT addresses exhausted """
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
         self.vapi.set_ipfix_exporter(collector_address=self.pg3.remote_ip4n,
                                      src_address=self.pg3.local_ip4n,
                                      path_mtu=512,
                                      template_interval=10)
-        self.vapi.snat_ipfix(domain_id=self.ipfix_domain_id,
-                             src_port=self.ipfix_src_port)
+        self.vapi.nat_ipfix(domain_id=self.ipfix_domain_id,
+                            src_port=self.ipfix_src_port)
 
         p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
              IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
@@ -1624,17 +1626,17 @@ class TestSNAT(MethodHolder):
                 self.verify_ipfix_addr_exhausted(data)
 
     def test_pool_addr_fib(self):
-        """ S-NAT add pool addresses to FIB """
+        """ NAT44 add pool addresses to FIB """
         static_addr = '10.0.0.10'
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, static_addr)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, static_addr)
 
-        # SNAT address
+        # NAT44 address
         p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
-             ARP(op=ARP.who_has, pdst=self.snat_addr,
+             ARP(op=ARP.who_has, pdst=self.nat_addr,
                  psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac))
         self.pg1.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1654,9 +1656,9 @@ class TestSNAT(MethodHolder):
         self.assertTrue(capture[0].haslayer(ARP))
         self.assertTrue(capture[0][ARP].op, ARP.is_at)
 
-        # send ARP to non-SNAT interface
+        # send ARP to non-NAT44 interface
         p = (Ether(src=self.pg2.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
-             ARP(op=ARP.who_has, pdst=self.snat_addr,
+             ARP(op=ARP.who_has, pdst=self.nat_addr,
                  psrc=self.pg2.remote_ip4, hwsrc=self.pg2.remote_mac))
         self.pg2.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1664,12 +1666,12 @@ class TestSNAT(MethodHolder):
         capture = self.pg1.get_capture(0)
 
         # remove addresses and verify
-        self.snat_add_address(self.snat_addr, is_add=0)
-        self.snat_add_static_mapping(self.pg0.remote_ip4, static_addr,
-                                     is_add=0)
+        self.nat44_add_address(self.nat_addr, is_add=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, static_addr,
+                                      is_add=0)
 
         p = (Ether(src=self.pg1.remote_mac, dst='ff:ff:ff:ff:ff:ff') /
-             ARP(op=ARP.who_has, pdst=self.snat_addr,
+             ARP(op=ARP.who_has, pdst=self.nat_addr,
                  psrc=self.pg1.remote_ip4, hwsrc=self.pg1.remote_mac))
         self.pg1.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -1685,7 +1687,7 @@ class TestSNAT(MethodHolder):
         capture = self.pg1.get_capture(0)
 
     def test_vrf_mode(self):
-        """ S-NAT tenant VRF aware address pool mode """
+        """ NAT44 tenant VRF aware address pool mode """
 
         vrf_id1 = 1
         vrf_id2 = 2
@@ -1699,12 +1701,12 @@ class TestSNAT(MethodHolder):
         self.pg0.config_ip4()
         self.pg1.config_ip4()
 
-        self.snat_add_address(nat_ip1, vrf_id=vrf_id1)
-        self.snat_add_address(nat_ip2, vrf_id=vrf_id2)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg2.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(nat_ip1, vrf_id=vrf_id1)
+        self.nat44_add_address(nat_ip2, vrf_id=vrf_id2)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg2.sw_if_index,
+                                                  is_inside=0)
 
         # first VRF
         pkts = self.create_stream_in(self.pg0, self.pg2)
@@ -1723,17 +1725,17 @@ class TestSNAT(MethodHolder):
         self.verify_capture_out(capture, nat_ip2)
 
     def test_vrf_feature_independent(self):
-        """ S-NAT tenant VRF independent address pool mode """
+        """ NAT44 tenant VRF independent address pool mode """
 
         nat_ip1 = "10.0.0.10"
         nat_ip2 = "10.0.0.11"
 
-        self.snat_add_address(nat_ip1)
-        self.snat_add_address(nat_ip2)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg2.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(nat_ip1)
+        self.nat44_add_address(nat_ip2)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg2.sw_if_index,
+                                                  is_inside=0)
 
         # first VRF
         pkts = self.create_stream_in(self.pg0, self.pg2)
@@ -1752,7 +1754,7 @@ class TestSNAT(MethodHolder):
         self.verify_capture_out(capture, nat_ip1)
 
     def test_dynamic_ipless_interfaces(self):
-        """ SNAT interfaces without configured ip dynamic map """
+        """ NAT44 interfaces without configured IP address """
 
         self.vapi.ip_neighbor_add_del(self.pg7.sw_if_index,
                                       self.pg7.remote_mac,
@@ -1772,10 +1774,10 @@ class TestSNAT(MethodHolder):
                                    next_hop_address=self.pg8.remote_ip4n,
                                    next_hop_sw_if_index=self.pg8.sw_if_index)
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg7.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg8.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg7.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg8.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         pkts = self.create_stream_in(self.pg7, self.pg8)
@@ -1786,7 +1788,7 @@ class TestSNAT(MethodHolder):
         self.verify_capture_out(capture)
 
         # out2in
-        pkts = self.create_stream_out(self.pg8, self.snat_addr)
+        pkts = self.create_stream_out(self.pg8, self.nat_addr)
         self.pg8.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
@@ -1794,7 +1796,7 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg7)
 
     def test_static_ipless_interfaces(self):
-        """ SNAT 1:1 NAT interfaces without configured ip """
+        """ NAT44 interfaces without configured IP address - 1:1 NAT """
 
         self.vapi.ip_neighbor_add_del(self.pg7.sw_if_index,
                                       self.pg7.remote_mac,
@@ -1814,10 +1816,10 @@ class TestSNAT(MethodHolder):
                                    next_hop_address=self.pg8.remote_ip4n,
                                    next_hop_sw_if_index=self.pg8.sw_if_index)
 
-        self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg7.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg8.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg7.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg8.sw_if_index,
+                                                  is_inside=0)
 
         # out2in
         pkts = self.create_stream_out(self.pg8)
@@ -1833,10 +1835,10 @@ class TestSNAT(MethodHolder):
         self.pg_enable_capture(self.pg_interfaces)
         self.pg_start()
         capture = self.pg8.get_capture(len(pkts))
-        self.verify_capture_out(capture, self.snat_addr, True)
+        self.verify_capture_out(capture, self.nat_addr, True)
 
     def test_static_with_port_ipless_interfaces(self):
-        """ SNAT 1:1 NAT with port interfaces without configured ip """
+        """ NAT44 interfaces without configured IP address - 1:1 NAPT """
 
         self.tcp_port_out = 30606
         self.udp_port_out = 30607
@@ -1860,19 +1862,19 @@ class TestSNAT(MethodHolder):
                                    next_hop_address=self.pg8.remote_ip4n,
                                    next_hop_sw_if_index=self.pg8.sw_if_index)
 
-        self.snat_add_address(self.snat_addr)
-        self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr,
-                                     self.tcp_port_in, self.tcp_port_out,
-                                     proto=IP_PROTOS.tcp)
-        self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr,
-                                     self.udp_port_in, self.udp_port_out,
-                                     proto=IP_PROTOS.udp)
-        self.snat_add_static_mapping(self.pg7.remote_ip4, self.snat_addr,
-                                     self.icmp_id_in, self.icmp_id_out,
-                                     proto=IP_PROTOS.icmp)
-        self.vapi.snat_interface_add_del_feature(self.pg7.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg8.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr,
+                                      self.tcp_port_in, self.tcp_port_out,
+                                      proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr,
+                                      self.udp_port_in, self.udp_port_out,
+                                      proto=IP_PROTOS.udp)
+        self.nat44_add_static_mapping(self.pg7.remote_ip4, self.nat_addr,
+                                      self.icmp_id_in, self.icmp_id_out,
+                                      proto=IP_PROTOS.icmp)
+        self.vapi.nat44_interface_add_del_feature(self.pg7.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg8.sw_if_index,
+                                                  is_inside=0)
 
         # out2in
         pkts = self.create_stream_out(self.pg8)
@@ -1893,10 +1895,10 @@ class TestSNAT(MethodHolder):
     def test_static_unknown_proto(self):
         """ 1:1 NAT translate packet with unknown protocol """
         nat_ip = "10.0.0.10"
-        self.snat_add_static_mapping(self.pg0.remote_ip4, nat_ip)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_static_mapping(self.pg0.remote_ip4, nat_ip)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
@@ -1947,11 +1949,11 @@ class TestSNAT(MethodHolder):
         host_nat_ip = "10.0.0.10"
         server_nat_ip = "10.0.0.11"
 
-        self.snat_add_static_mapping(host.ip4, host_nat_ip)
-        self.snat_add_static_mapping(server.ip4, server_nat_ip)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_static_mapping(host.ip4, host_nat_ip)
+        self.nat44_add_static_mapping(server.ip4, server_nat_ip)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # host to server
         p = (Ether(dst=self.pg0.local_mac, src=host.mac) /
@@ -1994,11 +1996,11 @@ class TestSNAT(MethodHolder):
             raise
 
     def test_unknown_proto(self):
-        """ SNAT translate packet with unknown protocol """
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        """ NAT44 translate packet with unknown protocol """
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
@@ -2020,7 +2022,7 @@ class TestSNAT(MethodHolder):
         p = self.pg1.get_capture(1)
         packet = p[0]
         try:
-            self.assertEqual(packet[IP].src, self.snat_addr)
+            self.assertEqual(packet[IP].src, self.nat_addr)
             self.assertEqual(packet[IP].dst, self.pg1.remote_ip4)
             self.assertTrue(packet.haslayer(GRE))
             self.check_ip_checksum(packet)
@@ -2030,7 +2032,7 @@ class TestSNAT(MethodHolder):
 
         # out2in
         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
-             IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+             IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
              GRE() /
              IP(src=self.pg3.remote_ip4, dst=self.pg2.remote_ip4) /
              TCP(sport=1234, dport=1234))
@@ -2049,7 +2051,7 @@ class TestSNAT(MethodHolder):
             raise
 
     def test_hairpinning_unknown_proto(self):
-        """ SNAT translate packet with unknown protocol - hairpinning """
+        """ NAT44 translate packet with unknown protocol - hairpinning """
         host = self.pg0.remote_hosts[0]
         server = self.pg0.remote_hosts[1]
         host_in_port = 1234
@@ -2058,13 +2060,13 @@ class TestSNAT(MethodHolder):
         server_out_port = 8765
         server_nat_ip = "10.0.0.11"
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # add static mapping for server
-        self.snat_add_static_mapping(server.ip4, server_nat_ip)
+        self.nat44_add_static_mapping(server.ip4, server_nat_ip)
 
         # host to server
         p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
@@ -2086,7 +2088,7 @@ class TestSNAT(MethodHolder):
         p = self.pg0.get_capture(1)
         packet = p[0]
         try:
-            self.assertEqual(packet[IP].src, self.snat_addr)
+            self.assertEqual(packet[IP].src, self.nat_addr)
             self.assertEqual(packet[IP].dst, server.ip4)
             self.assertTrue(packet.haslayer(GRE))
             self.check_ip_checksum(packet)
@@ -2096,7 +2098,7 @@ class TestSNAT(MethodHolder):
 
         # server to host
         p = (Ether(dst=self.pg0.local_mac, src=server.mac) /
-             IP(src=server.ip4, dst=self.snat_addr) /
+             IP(src=server.ip4, dst=self.nat_addr) /
              GRE() /
              IP(src=self.pg3.remote_ip4, dst=self.pg2.remote_ip4) /
              TCP(sport=1234, dport=1234))
@@ -2115,11 +2117,11 @@ class TestSNAT(MethodHolder):
             raise
 
     def test_output_feature(self):
-        """ S-NAT interface output feature (in2out postrouting) """
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_output_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_output_feature(self.pg1.sw_if_index,
-                                                        is_inside=0)
+        """ NAT44 interface output feature (in2out postrouting) """
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+                                                         is_inside=0)
 
         # in2out
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -2138,7 +2140,7 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg0)
 
     def test_output_feature_vrf_aware(self):
-        """ S-NAT interface output feature VRF aware (in2out postrouting) """
+        """ NAT44 interface output feature VRF aware (in2out postrouting) """
         nat_ip_vrf10 = "10.0.0.10"
         nat_ip_vrf20 = "10.0.0.20"
 
@@ -2153,12 +2155,12 @@ class TestSNAT(MethodHolder):
                                    next_hop_sw_if_index=self.pg3.sw_if_index,
                                    table_id=20)
 
-        self.snat_add_address(nat_ip_vrf10, vrf_id=10)
-        self.snat_add_address(nat_ip_vrf20, vrf_id=20)
-        self.vapi.snat_interface_add_del_output_feature(self.pg4.sw_if_index)
-        self.vapi.snat_interface_add_del_output_feature(self.pg6.sw_if_index)
-        self.vapi.snat_interface_add_del_output_feature(self.pg3.sw_if_index,
-                                                        is_inside=0)
+        self.nat44_add_address(nat_ip_vrf10, vrf_id=10)
+        self.nat44_add_address(nat_ip_vrf20, vrf_id=20)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg4.sw_if_index)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg6.sw_if_index)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg3.sw_if_index,
+                                                         is_inside=0)
 
         # in2out VRF 10
         pkts = self.create_stream_in(self.pg4, self.pg3)
@@ -2193,7 +2195,7 @@ class TestSNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg6)
 
     def test_output_feature_hairpinning(self):
-        """ S-NAT interface output feature hairpinning (in2out postrouting) """
+        """ NAT44 interface output feature hairpinning (in2out postrouting) """
         host = self.pg0.remote_hosts[0]
         server = self.pg0.remote_hosts[1]
         host_in_port = 1234
@@ -2201,19 +2203,19 @@ class TestSNAT(MethodHolder):
         server_in_port = 5678
         server_out_port = 8765
 
-        self.snat_add_address(self.snat_addr)
-        self.vapi.snat_interface_add_del_output_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_output_feature(self.pg1.sw_if_index,
-                                                        is_inside=0)
+        self.nat44_add_address(self.nat_addr)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+                                                         is_inside=0)
 
         # add static mapping for server
-        self.snat_add_static_mapping(server.ip4, self.snat_addr,
-                                     server_in_port, server_out_port,
-                                     proto=IP_PROTOS.tcp)
+        self.nat44_add_static_mapping(server.ip4, self.nat_addr,
+                                      server_in_port, server_out_port,
+                                      proto=IP_PROTOS.tcp)
 
         # send packet from host to server
         p = (Ether(src=host.mac, dst=self.pg0.local_mac) /
-             IP(src=host.ip4, dst=self.snat_addr) /
+             IP(src=host.ip4, dst=self.nat_addr) /
              TCP(sport=host_in_port, dport=server_out_port))
         self.pg0.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -2223,7 +2225,7 @@ class TestSNAT(MethodHolder):
         try:
             ip = p[IP]
             tcp = p[TCP]
-            self.assertEqual(ip.src, self.snat_addr)
+            self.assertEqual(ip.src, self.nat_addr)
             self.assertEqual(ip.dst, server.ip4)
             self.assertNotEqual(tcp.sport, host_in_port)
             self.assertEqual(tcp.dport, server_in_port)
@@ -2235,7 +2237,7 @@ class TestSNAT(MethodHolder):
 
         # send reply from server to host
         p = (Ether(src=server.mac, dst=self.pg0.local_mac) /
-             IP(src=server.ip4, dst=self.snat_addr) /
+             IP(src=server.ip4, dst=self.nat_addr) /
              TCP(sport=server_in_port, dport=host_out_port))
         self.pg0.add_stream(p)
         self.pg_enable_capture(self.pg_interfaces)
@@ -2245,7 +2247,7 @@ class TestSNAT(MethodHolder):
         try:
             ip = p[IP]
             tcp = p[TCP]
-            self.assertEqual(ip.src, self.snat_addr)
+            self.assertEqual(ip.src, self.nat_addr)
             self.assertEqual(ip.dst, host.ip4)
             self.assertEqual(tcp.sport, server_out_port)
             self.assertEqual(tcp.dport, host_in_port)
@@ -2255,10 +2257,10 @@ class TestSNAT(MethodHolder):
             raise
 
     def tearDown(self):
-        super(TestSNAT, self).tearDown()
+        super(TestNAT44, self).tearDown()
         if not self.vpp_dead:
-            self.logger.info(self.vapi.cli("show snat verbose"))
-            self.clear_snat()
+            self.logger.info(self.vapi.cli("show nat44 verbose"))
+            self.clear_nat44()
 
 
 class TestDeterministicNAT(MethodHolder):
@@ -2267,7 +2269,7 @@ class TestDeterministicNAT(MethodHolder):
     @classmethod
     def setUpConstants(cls):
         super(TestDeterministicNAT, cls).setUpConstants()
-        cls.vpp_cmdline.extend(["snat", "{", "deterministic", "}"])
+        cls.vpp_cmdline.extend(["nat", "{", "deterministic", "}"])
 
     @classmethod
     def setUpClass(cls):
@@ -2279,7 +2281,7 @@ class TestDeterministicNAT(MethodHolder):
             cls.udp_port_in = 6304
             cls.udp_external_port = 6304
             cls.icmp_id_in = 6305
-            cls.snat_addr = '10.0.0.3'
+            cls.nat_addr = '10.0.0.3'
 
             cls.create_pg_interfaces(range(3))
             cls.interfaces = list(cls.pg_interfaces)
@@ -2330,11 +2332,11 @@ class TestDeterministicNAT(MethodHolder):
         Create packet stream for outside network
 
         :param out_if: Outside interface
-        :param dst_ip: Destination IP address (Default use global SNAT address)
+        :param dst_ip: Destination IP address (Default use global NAT address)
         :param ttl: TTL of generated packets
         """
         if dst_ip is None:
-            dst_ip = self.snat_addr
+            dst_ip = self.nat_addr
         pkts = []
         # TCP
         p = (Ether(dst=out_if.local_mac, src=out_if.remote_mac) /
@@ -2361,12 +2363,12 @@ class TestDeterministicNAT(MethodHolder):
         Verify captured packets on outside network
 
         :param capture: Captured packets
-        :param nat_ip: Translated IP address (Default use global SNAT address)
+        :param nat_ip: Translated IP address (Default use global NAT address)
         :param same_port: Sorce port number is not translated (Default False)
         :param packet_num: Expected number of packets (Default 3)
         """
         if nat_ip is None:
-            nat_ip = self.snat_addr
+            nat_ip = self.nat_addr
         self.assertEqual(packet_num, len(capture))
         for packet in capture:
             try:
@@ -2404,7 +2406,7 @@ class TestDeterministicNAT(MethodHolder):
 
             # SYN + ACK packet out->in
             p = (Ether(src=out_if.remote_mac, dst=out_if.local_mac) /
-                 IP(src=out_if.remote_ip4, dst=self.snat_addr) /
+                 IP(src=out_if.remote_ip4, dst=self.nat_addr) /
                  TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
                      flags="SA"))
             out_if.add_stream(p)
@@ -2442,7 +2444,7 @@ class TestDeterministicNAT(MethodHolder):
         self.assertEqual(self.pg0.remote_ip4n, record[8])
 
     def test_deterministic_mode(self):
-        """ S-NAT run deterministic mode """
+        """ NAT plugin run deterministic mode """
         in_addr = '172.16.255.0'
         out_addr = '172.17.255.50'
         in_addr_t = '172.16.255.20'
@@ -2452,17 +2454,17 @@ class TestDeterministicNAT(MethodHolder):
         in_plen = 24
         out_plen = 32
 
-        snat_config = self.vapi.snat_show_config()
-        self.assertEqual(1, snat_config.deterministic)
+        nat_config = self.vapi.nat_show_config()
+        self.assertEqual(1, nat_config.deterministic)
 
-        self.vapi.snat_add_det_map(in_addr_n, in_plen, out_addr_n, out_plen)
+        self.vapi.nat_det_add_del_map(in_addr_n, in_plen, out_addr_n, out_plen)
 
-        rep1 = self.vapi.snat_det_forward(in_addr_t_n)
+        rep1 = self.vapi.nat_det_forward(in_addr_t_n)
         self.assertEqual(rep1.out_addr[:4], out_addr_n)
-        rep2 = self.vapi.snat_det_reverse(out_addr_n, rep1.out_port_hi)
+        rep2 = self.vapi.nat_det_reverse(out_addr_n, rep1.out_port_hi)
         self.assertEqual(rep2.in_addr[:4], in_addr_t_n)
 
-        deterministic_mappings = self.vapi.snat_det_map_dump()
+        deterministic_mappings = self.vapi.nat_det_map_dump()
         self.assertEqual(len(deterministic_mappings), 1)
         dsm = deterministic_mappings[0]
         self.assertEqual(in_addr_n, dsm.in_addr[:4])
@@ -2470,20 +2472,20 @@ class TestDeterministicNAT(MethodHolder):
         self.assertEqual(out_addr_n, dsm.out_addr[:4])
         self.assertEqual(out_plen, dsm.out_plen)
 
-        self.clear_snat()
-        deterministic_mappings = self.vapi.snat_det_map_dump()
+        self.clear_nat_det()
+        deterministic_mappings = self.vapi.nat_det_map_dump()
         self.assertEqual(len(deterministic_mappings), 0)
 
     def test_set_timeouts(self):
         """ Set deterministic NAT timeouts """
-        timeouts_before = self.vapi.snat_det_get_timeouts()
+        timeouts_before = self.vapi.nat_det_get_timeouts()
 
-        self.vapi.snat_det_set_timeouts(timeouts_before.udp + 10,
-                                        timeouts_before.tcp_established + 10,
-                                        timeouts_before.tcp_transitory + 10,
-                                        timeouts_before.icmp + 10)
+        self.vapi.nat_det_set_timeouts(timeouts_before.udp + 10,
+                                       timeouts_before.tcp_established + 10,
+                                       timeouts_before.tcp_transitory + 10,
+                                       timeouts_before.icmp + 10)
 
-        timeouts_after = self.vapi.snat_det_get_timeouts()
+        timeouts_after = self.vapi.nat_det_get_timeouts()
 
         self.assertNotEqual(timeouts_before.udp, timeouts_after.udp)
         self.assertNotEqual(timeouts_before.icmp, timeouts_after.icmp)
@@ -2493,17 +2495,17 @@ class TestDeterministicNAT(MethodHolder):
                             timeouts_after.tcp_transitory)
 
     def test_det_in(self):
-        """ CGNAT translation test (TCP, UDP, ICMP) """
+        """ Deterministic NAT translation test (TCP, UDP, ICMP) """
 
         nat_ip = "10.0.0.10"
 
-        self.vapi.snat_add_det_map(self.pg0.remote_ip4n,
-                                   32,
-                                   socket.inet_aton(nat_ip),
-                                   32)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.vapi.nat_det_add_del_map(self.pg0.remote_ip4n,
+                                      32,
+                                      socket.inet_aton(nat_ip),
+                                      32)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # in2out
         pkts = self.create_stream_in(self.pg0, self.pg1)
@@ -2522,7 +2524,7 @@ class TestDeterministicNAT(MethodHolder):
         self.verify_capture_in(capture, self.pg0)
 
         # session dump test
-        sessions = self.vapi.snat_det_session_dump(self.pg0.remote_ip4n)
+        sessions = self.vapi.nat_det_session_dump(self.pg0.remote_ip4n)
         self.assertEqual(len(sessions), 3)
 
         # TCP session
@@ -2546,7 +2548,7 @@ class TestDeterministicNAT(MethodHolder):
         self.assertEqual(s.out_port, self.icmp_external_id)
 
     def test_multiple_users(self):
-        """ CGNAT multiple users """
+        """ Deterministic NAT multiple users """
 
         nat_ip = "10.0.0.10"
         port_in = 80
@@ -2555,13 +2557,13 @@ class TestDeterministicNAT(MethodHolder):
         host0 = self.pg0.remote_hosts[0]
         host1 = self.pg0.remote_hosts[1]
 
-        self.vapi.snat_add_det_map(host0.ip4n,
-                                   24,
-                                   socket.inet_aton(nat_ip),
-                                   32)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        self.vapi.nat_det_add_del_map(host0.ip4n,
+                                      24,
+                                      socket.inet_aton(nat_ip),
+                                      32)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         # host0 to out
         p = (Ether(src=host0.mac, dst=self.pg0.local_mac) /
@@ -2603,7 +2605,7 @@ class TestDeterministicNAT(MethodHolder):
             self.logger.error(ppp("Unexpected or invalid packet:", p))
             raise
 
-        dms = self.vapi.snat_det_map_dump()
+        dms = self.vapi.nat_det_map_dump()
         self.assertEqual(1, len(dms))
         self.assertEqual(2, dms[0].ses_num)
 
@@ -2648,29 +2650,29 @@ class TestDeterministicNAT(MethodHolder):
             raise
 
         # session close api test
-        self.vapi.snat_det_close_session_out(socket.inet_aton(nat_ip),
-                                             port_out1,
-                                             self.pg1.remote_ip4n,
-                                             external_port)
-        dms = self.vapi.snat_det_map_dump()
-        self.assertEqual(dms[0].ses_num, 1)
-
-        self.vapi.snat_det_close_session_in(host0.ip4n,
-                                            port_in,
+        self.vapi.nat_det_close_session_out(socket.inet_aton(nat_ip),
+                                            port_out1,
                                             self.pg1.remote_ip4n,
                                             external_port)
-        dms = self.vapi.snat_det_map_dump()
+        dms = self.vapi.nat_det_map_dump()
+        self.assertEqual(dms[0].ses_num, 1)
+
+        self.vapi.nat_det_close_session_in(host0.ip4n,
+                                           port_in,
+                                           self.pg1.remote_ip4n,
+                                           external_port)
+        dms = self.vapi.nat_det_map_dump()
         self.assertEqual(dms[0].ses_num, 0)
 
     def test_tcp_session_close_detection_in(self):
-        """ CGNAT TCP session close initiated from inside network """
-        self.vapi.snat_add_det_map(self.pg0.remote_ip4n,
-                                   32,
-                                   socket.inet_aton(self.snat_addr),
-                                   32)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        """ Deterministic NAT TCP session close from inside network """
+        self.vapi.nat_det_add_del_map(self.pg0.remote_ip4n,
+                                      32,
+                                      socket.inet_aton(self.nat_addr),
+                                      32)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         self.initiate_tcp_session(self.pg0, self.pg1)
 
@@ -2690,14 +2692,14 @@ class TestDeterministicNAT(MethodHolder):
 
             # ACK packet out -> in
             p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
-                 IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
                  TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
                      flags="A"))
             pkts.append(p)
 
             # FIN packet out -> in
             p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
-                 IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
                  TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
                      flags="F"))
             pkts.append(p)
@@ -2717,22 +2719,22 @@ class TestDeterministicNAT(MethodHolder):
             self.pg_start()
             self.pg1.get_capture(1)
 
-            # Check if snat closed the session
-            dms = self.vapi.snat_det_map_dump()
+            # Check if deterministic NAT44 closed the session
+            dms = self.vapi.nat_det_map_dump()
             self.assertEqual(0, dms[0].ses_num)
         except:
             self.logger.error("TCP session termination failed")
             raise
 
     def test_tcp_session_close_detection_out(self):
-        """ CGNAT TCP session close initiated from outside network """
-        self.vapi.snat_add_det_map(self.pg0.remote_ip4n,
-                                   32,
-                                   socket.inet_aton(self.snat_addr),
-                                   32)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        """ Deterministic NAT TCP session close from outside network """
+        self.vapi.nat_det_add_del_map(self.pg0.remote_ip4n,
+                                      32,
+                                      socket.inet_aton(self.nat_addr),
+                                      32)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         self.initiate_tcp_session(self.pg0, self.pg1)
 
@@ -2740,7 +2742,7 @@ class TestDeterministicNAT(MethodHolder):
         try:
             # FIN packet out -> in
             p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
-                 IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
                  TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
                      flags="F"))
             self.pg1.add_stream(p)
@@ -2771,7 +2773,7 @@ class TestDeterministicNAT(MethodHolder):
 
             # ACK packet out -> in
             p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
-                 IP(src=self.pg1.remote_ip4, dst=self.snat_addr) /
+                 IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
                  TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
                      flags="A"))
             self.pg1.add_stream(p)
@@ -2779,8 +2781,8 @@ class TestDeterministicNAT(MethodHolder):
             self.pg_start()
             self.pg0.get_capture(1)
 
-            # Check if snat closed the session
-            dms = self.vapi.snat_det_map_dump()
+            # Check if deterministic NAT44 closed the session
+            dms = self.vapi.nat_det_map_dump()
             self.assertEqual(0, dms[0].ses_num)
         except:
             self.logger.error("TCP session termination failed")
@@ -2788,17 +2790,17 @@ class TestDeterministicNAT(MethodHolder):
 
     @unittest.skipUnless(running_extended_tests(), "part of extended tests")
     def test_session_timeout(self):
-        """ CGNAT session timeouts """
-        self.vapi.snat_add_det_map(self.pg0.remote_ip4n,
-                                   32,
-                                   socket.inet_aton(self.snat_addr),
-                                   32)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        """ Deterministic NAT session timeouts """
+        self.vapi.nat_det_add_del_map(self.pg0.remote_ip4n,
+                                      32,
+                                      socket.inet_aton(self.nat_addr),
+                                      32)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
 
         self.initiate_tcp_session(self.pg0, self.pg1)
-        self.vapi.snat_det_set_timeouts(5, 5, 5, 5)
+        self.vapi.nat_det_set_timeouts(5, 5, 5, 5)
         pkts = self.create_stream_in(self.pg0, self.pg1)
         self.pg0.add_stream(pkts)
         self.pg_enable_capture(self.pg_interfaces)
@@ -2806,24 +2808,24 @@ class TestDeterministicNAT(MethodHolder):
         capture = self.pg1.get_capture(len(pkts))
         sleep(15)
 
-        dms = self.vapi.snat_det_map_dump()
+        dms = self.vapi.nat_det_map_dump()
         self.assertEqual(0, dms[0].ses_num)
 
     @unittest.skipUnless(running_extended_tests(), "part of extended tests")
     def test_session_limit_per_user(self):
-        """ CGNAT maximum 1000 sessions per user should be created """
-        self.vapi.snat_add_det_map(self.pg0.remote_ip4n,
-                                   32,
-                                   socket.inet_aton(self.snat_addr),
-                                   32)
-        self.vapi.snat_interface_add_del_feature(self.pg0.sw_if_index)
-        self.vapi.snat_interface_add_del_feature(self.pg1.sw_if_index,
-                                                 is_inside=0)
+        """ Deterministic NAT maximum sessions per user limit """
+        self.vapi.nat_det_add_del_map(self.pg0.remote_ip4n,
+                                      32,
+                                      socket.inet_aton(self.nat_addr),
+                                      32)
+        self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+        self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+                                                  is_inside=0)
         self.vapi.set_ipfix_exporter(collector_address=self.pg2.remote_ip4n,
                                      src_address=self.pg2.local_ip4n,
                                      path_mtu=512,
                                      template_interval=10)
-        self.vapi.snat_ipfix()
+        self.vapi.nat_ipfix()
 
         pkts = []
         for port in range(1025, 2025):
@@ -2857,7 +2859,7 @@ class TestDeterministicNAT(MethodHolder):
         self.assertEqual(inner_ip[UDPerror].sport, 3001)
         self.assertEqual(inner_ip[UDPerror].dport, 3002)
 
-        dms = self.vapi.snat_det_map_dump()
+        dms = self.vapi.nat_det_map_dump()
 
         self.assertEqual(1000, dms[0].ses_num)
 
@@ -2877,31 +2879,31 @@ class TestDeterministicNAT(MethodHolder):
                 data = ipfix.decode_data_set(p.getlayer(Set))
                 self.verify_ipfix_max_entries_per_user(data)
 
-    def clear_snat(self):
+    def clear_nat_det(self):
         """
-        Clear SNAT configuration.
+        Clear deterministic NAT configuration.
         """
-        self.vapi.snat_ipfix(enable=0)
-        self.vapi.snat_det_set_timeouts()
-        deterministic_mappings = self.vapi.snat_det_map_dump()
+        self.vapi.nat_ipfix(enable=0)
+        self.vapi.nat_det_set_timeouts()
+        deterministic_mappings = self.vapi.nat_det_map_dump()
         for dsm in deterministic_mappings:
-            self.vapi.snat_add_det_map(dsm.in_addr,
-                                       dsm.in_plen,
-                                       dsm.out_addr,
-                                       dsm.out_plen,
-                                       is_add=0)
+            self.vapi.nat_det_add_del_map(dsm.in_addr,
+                                          dsm.in_plen,
+                                          dsm.out_addr,
+                                          dsm.out_plen,
+                                          is_add=0)
 
-        interfaces = self.vapi.snat_interface_dump()
+        interfaces = self.vapi.nat44_interface_dump()
         for intf in interfaces:
-            self.vapi.snat_interface_add_del_feature(intf.sw_if_index,
-                                                     intf.is_inside,
-                                                     is_add=0)
+            self.vapi.nat44_interface_add_del_feature(intf.sw_if_index,
+                                                      intf.is_inside,
+                                                      is_add=0)
 
     def tearDown(self):
         super(TestDeterministicNAT, self).tearDown()
         if not self.vpp_dead:
-            self.logger.info(self.vapi.cli("show snat detail"))
-            self.clear_snat()
+            self.logger.info(self.vapi.cli("show nat44 detail"))
+            self.clear_nat_det()
 
 
 class TestNAT64(MethodHolder):
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 95de0be6f2c..61db4d6b14b 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -1061,41 +1061,41 @@ class VppPapiProvider(object):
              'mt_next_hop_table_id': next_hop_table_id,
              'mt_next_hop_out_label_stack': next_hop_out_label_stack})
 
-    def snat_interface_add_del_feature(
+    def nat44_interface_add_del_feature(
             self,
             sw_if_index,
             is_inside=1,
             is_add=1):
-        """Enable/disable S-NAT feature on the interface
+        """Enable/disable NAT44 feature on the interface
 
         :param sw_if_index: Software index of the interface
         :param is_inside: 1 if inside, 0 if outside (Default value = 1)
         :param is_add: 1 if add, 0 if delete (Default value = 1)
         """
         return self.api(
-            self.papi.snat_interface_add_del_feature,
+            self.papi.nat44_interface_add_del_feature,
             {'is_add': is_add,
              'is_inside': is_inside,
              'sw_if_index': sw_if_index})
 
-    def snat_interface_add_del_output_feature(
+    def nat44_interface_add_del_output_feature(
             self,
             sw_if_index,
             is_inside=1,
             is_add=1):
-        """Enable/disable S-NAT output feature on the interface
+        """Enable/disable NAT44 output feature on the interface
 
         :param sw_if_index: Software index of the interface
         :param is_inside: 1 if inside, 0 if outside (Default value = 1)
         :param is_add: 1 if add, 0 if delete (Default value = 1)
         """
         return self.api(
-            self.papi.snat_interface_add_del_output_feature,
+            self.papi.nat44_interface_add_del_output_feature,
             {'is_add': is_add,
              'is_inside': is_inside,
              'sw_if_index': sw_if_index})
 
-    def snat_add_static_mapping(
+    def nat44_add_del_static_mapping(
             self,
             local_ip,
             external_ip=0,
@@ -1105,9 +1105,8 @@ class VppPapiProvider(object):
             addr_only=1,
             vrf_id=0,
             protocol=0,
-            is_add=1,
-            is_ip4=1):
-        """Add/delete S-NAT static mapping
+            is_add=1):
+        """Add/delete NAT44 static mapping
 
         :param local_ip: Local IP address
         :param external_ip: External IP address
@@ -1118,12 +1117,10 @@ class VppPapiProvider(object):
         :param vrf_id: VRF ID
         :param protocol: IP protocol (Default value = 0)
         :param is_add: 1 if add, 0 if delete (Default value = 1)
-        :param is_ip4: 1 if address type is IPv4 (Default value = 1)
         """
         return self.api(
-            self.papi.snat_add_static_mapping,
+            self.papi.nat44_add_del_static_mapping,
             {'is_add': is_add,
-             'is_ip4': is_ip4,
              'addr_only': addr_only,
              'local_ip_address': local_ip,
              'external_ip_address': external_ip,
@@ -1133,100 +1130,96 @@ class VppPapiProvider(object):
              'vrf_id': vrf_id,
              'protocol': protocol})
 
-    def snat_add_address_range(
+    def nat44_add_del_address_range(
             self,
             first_ip_address,
             last_ip_address,
             is_add=1,
-            is_ip4=1,
             vrf_id=0xFFFFFFFF):
-        """Add/del S-NAT address range
+        """Add/del NAT44 address range
 
         :param first_ip_address: First IP address
         :param last_ip_address: Last IP address
         :param vrf_id: VRF id for the address range
         :param is_add: 1 if add, 0 if delete (Default value = 1)
-        :param is_ip4: 1 if address type is IPv4 (Default value = 1)
         """
         return self.api(
-            self.papi.snat_add_address_range,
-            {'is_ip4': is_ip4,
-             'first_ip_address': first_ip_address,
+            self.papi.nat44_add_del_address_range,
+            {'first_ip_address': first_ip_address,
              'last_ip_address': last_ip_address,
              'vrf_id': vrf_id,
              'is_add': is_add})
 
-    def snat_address_dump(self):
-        """Dump S-NAT addresses
-        :return: Dictionary of S-NAT addresses
+    def nat44_address_dump(self):
+        """Dump NAT44 addresses
+        :return: Dictionary of NAT44 addresses
         """
-        return self.api(self.papi.snat_address_dump, {})
+        return self.api(self.papi.nat44_address_dump, {})
 
-    def snat_interface_dump(self):
-        """Dump interfaces with S-NAT feature
-        :return: Dictionary of interfaces with S-NAT feature
+    def nat44_interface_dump(self):
+        """Dump interfaces with NAT44 feature
+        :return: Dictionary of interfaces with NAT44 feature
         """
-        return self.api(self.papi.snat_interface_dump, {})
+        return self.api(self.papi.nat44_interface_dump, {})
 
-    def snat_interface_output_feature_dump(self):
-        """Dump interfaces with S-NAT output feature
-        :return: Dictionary of interfaces with S-NAT output feature
+    def nat44_interface_output_feature_dump(self):
+        """Dump interfaces with NAT44 output feature
+        :return: Dictionary of interfaces with NAT44 output feature
         """
-        return self.api(self.papi.snat_interface_output_feature_dump, {})
+        return self.api(self.papi.nat44_interface_output_feature_dump, {})
 
-    def snat_static_mapping_dump(self):
-        """Dump S-NAT static mappings
-        :return: Dictionary of S-NAT static mappings
+    def nat44_static_mapping_dump(self):
+        """Dump NAT44 static mappings
+        :return: Dictionary of NAT44 static mappings
         """
-        return self.api(self.papi.snat_static_mapping_dump, {})
+        return self.api(self.papi.nat44_static_mapping_dump, {})
 
-    def snat_show_config(self):
-        """Show S-NAT config
-        :return: S-NAT config parameters
+    def nat_show_config(self):
+        """Show NAT plugin config
+        :return: NAT plugin config parameters
         """
-        return self.api(self.papi.snat_show_config, {})
+        return self.api(self.papi.nat_show_config, {})
 
-    def snat_add_interface_addr(
+    def nat44_add_interface_addr(
             self,
             sw_if_index,
             is_add=1):
-        """Add/del S-NAT address from interface
+        """Add/del NAT44 address from interface
 
         :param sw_if_index: Software index of the interface
         :param is_add: 1 if add, 0 if delete (Default value = 1)
         """
-        return self.api(self.papi.snat_add_del_interface_addr,
+        return self.api(self.papi.nat44_add_del_interface_addr,
                         {'is_add': is_add, 'sw_if_index': sw_if_index})
 
-    def snat_interface_addr_dump(self):
-        """Dump S-NAT addresses interfaces
-        :return: Dictionary of S-NAT addresses interfaces
+    def nat44_interface_addr_dump(self):
+        """Dump NAT44 addresses interfaces
+        :return: Dictionary of NAT44 addresses interfaces
         """
-        return self.api(self.papi.snat_interface_addr_dump, {})
+        return self.api(self.papi.nat44_interface_addr_dump, {})
 
-    def snat_ipfix(
+    def nat_ipfix(
             self,
             domain_id=1,
             src_port=4739,
             enable=1):
-        """Enable/disable S-NAT IPFIX logging
+        """Enable/disable NAT IPFIX logging
 
         :param domain_id: Observation domain ID (Default value = 1)
         :param src_port: Source port number (Default value = 4739)
         :param enable: 1 if enable, 0 if disable (Default value = 1)
         """
         return self.api(
-            self.papi.snat_ipfix_enable_disable,
+            self.papi.nat_ipfix_enable_disable,
             {'domain_id': domain_id,
              'src_port': src_port,
              'enable': enable})
 
-    def snat_user_session_dump(
+    def nat44_user_session_dump(
             self,
             ip_address,
-            vrf_id,
-            is_ip4=1):
-        """Dump S-NAT user's sessions
+            vrf_id):
+        """Dump NAT44 user's sessions
 
         :param ip_address: ip adress of the user to be dumped
         :param cpu_index: cpu_index on which the user is
@@ -1234,26 +1227,25 @@ class VppPapiProvider(object):
         :return: Dictionary of S-NAT sessions
         """
         return self.api(
-            self.papi.snat_user_session_dump,
+            self.papi.nat44_user_session_dump,
             {'ip_address': ip_address,
-             'vrf_id': vrf_id,
-             'is_ip4': is_ip4})
+             'vrf_id': vrf_id})
 
-    def snat_user_dump(self):
-        """Dump S-NAT users
+    def nat44_user_dump(self):
+        """Dump NAT44 users
 
-        :return: Dictionary of S-NAT users
+        :return: Dictionary of NAT44 users
         """
-        return self.api(self.papi.snat_user_dump, {})
+        return self.api(self.papi.nat44_user_dump, {})
 
-    def snat_add_det_map(
+    def nat_det_add_del_map(
             self,
             in_addr,
             in_plen,
             out_addr,
             out_plen,
             is_add=1):
-        """Add/delete S-NAT deterministic mapping
+        """Add/delete deterministic NAT mapping
 
         :param is_add - 1 if add, 0 if delete
         :param in_addr - inside IP address
@@ -1262,14 +1254,15 @@ class VppPapiProvider(object):
         :param out_plen - outside IP address prefix length
         """
         return self.api(
-            self.papi.snat_add_det_map,
+            self.papi.nat_det_add_del_map,
             {'is_add': is_add,
+             'is_nat44': 1,
              'in_addr': in_addr,
              'in_plen': in_plen,
              'out_addr': out_addr,
              'out_plen': out_plen})
 
-    def snat_det_forward(
+    def nat_det_forward(
             self,
             in_addr):
         """Get outside address and port range from inside address
@@ -1277,10 +1270,11 @@ class VppPapiProvider(object):
         :param in_addr - inside IP address
         """
         return self.api(
-            self.papi.snat_det_forward,
-            {'in_addr': in_addr})
+            self.papi.nat_det_forward,
+            {'in_addr': in_addr,
+             'is_nat44': 1})
 
-    def snat_det_reverse(
+    def nat_det_reverse(
             self,
             out_addr,
             out_port):
@@ -1290,18 +1284,18 @@ class VppPapiProvider(object):
         :param out_port - outside port
         """
         return self.api(
-            self.papi.snat_det_reverse,
+            self.papi.nat_det_reverse,
             {'out_addr': out_addr,
              'out_port': out_port})
 
-    def snat_det_map_dump(self):
-        """Dump S-NAT deterministic mappings
+    def nat_det_map_dump(self):
+        """Dump deterministic NAT mappings
 
-        :return: Dictionary of S-NAT deterministic mappings
+        :return: Dictionary of deterministic NAT mappings
         """
-        return self.api(self.papi.snat_det_map_dump, {})
+        return self.api(self.papi.nat_det_map_dump, {})
 
-    def snat_det_set_timeouts(
+    def nat_det_set_timeouts(
             self,
             udp=300,
             tcp_established=7440,
@@ -1315,78 +1309,71 @@ class VppPapiProvider(object):
         :param icmp - ICMP timeout (Default value = 60)
         """
         return self.api(
-            self.papi.snat_det_set_timeouts,
+            self.papi.nat_det_set_timeouts,
             {'udp': udp,
              'tcp_established': tcp_established,
              'tcp_transitory': tcp_transitory,
              'icmp': icmp})
 
-    def snat_det_get_timeouts(self):
+    def nat_det_get_timeouts(self):
         """Get values of timeouts for deterministic NAT
 
         :return: Timeouts for deterministic NAT (in seconds)
         """
-        return self.api(self.papi.snat_det_get_timeouts, {})
+        return self.api(self.papi.nat_det_get_timeouts, {})
 
-    def snat_det_close_session_out(
+    def nat_det_close_session_out(
             self,
             out_addr,
             out_port,
             ext_addr,
-            ext_port,
-            is_ip4=1):
-        """Close CGN session using outside address and port
+            ext_port):
+        """Close deterministic NAT session using outside address and port
 
         :param out_addr - outside IP address
         :param out_port - outside port
         :param ext_addr - external host IP address
         :param ext_port - external host port
-        :param is_ip4: 1 if address type is IPv4 (Default value = 1)
         """
         return self.api(
-            self.papi.snat_det_close_session_out,
+            self.papi.nat_det_close_session_out,
             {'out_addr': out_addr,
              'out_port': out_port,
              'ext_addr': ext_addr,
-             'ext_port': ext_port,
-             'is_ip4': is_ip4})
+             'ext_port': ext_port})
 
-    def snat_det_close_session_in(
+    def nat_det_close_session_in(
             self,
             in_addr,
             in_port,
             ext_addr,
-            ext_port,
-            is_ip4=1):
-        """Close CGN session using inside address and port
+            ext_port):
+        """Close deterministic NAT session using inside address and port
 
         :param in_addr - inside IP address
         :param in_port - inside port
         :param ext_addr - external host IP address
         :param ext_port - external host port
-        :param is_ip4: 1 if address type is IPv4 (Default value = 1)
         """
         return self.api(
-            self.papi.snat_det_close_session_in,
+            self.papi.nat_det_close_session_in,
             {'in_addr': in_addr,
              'in_port': in_port,
              'ext_addr': ext_addr,
              'ext_port': ext_port,
-             'is_ip4': is_ip4})
+             'is_nat44': 1})
 
-    def snat_det_session_dump(
+    def nat_det_session_dump(
             self,
-            user_addr,
-            is_ip4=1):
-        """Dump S-NAT deterministic sessions belonging to a user
+            user_addr):
+        """Dump deterministic NAT sessions belonging to a user
 
         :param user_addr - inside IP address of the user
-        :param is_ip4: - 1 if address type is IPv4 (Default value = 1)
-        :return: Dictionary of S-NAT deterministic sessions
+        :return: Dictionary of deterministic NAT sessions
         """
         return self.api(
-            self.papi.snat_det_session_dump,
-            {'is_ip4': is_ip4,
+            self.papi.nat_det_session_dump,
+            {'is_nat44': 1,
              'user_addr': user_addr})
 
     def nat64_add_del_pool_addr_range(