diff --git a/api-ref/src/wadls/networking-api/src/common.ent b/api-ref/src/wadls/networking-api/src/common.ent
index f8b1ca9b4..f232fab45 100644
--- a/api-ref/src/wadls/networking-api/src/common.ent
+++ b/api-ref/src/wadls/networking-api/src/common.ent
@@ -3206,11 +3206,24 @@
     xml:lang="EN">
     <para>
       The external gateway parameters, which include the
-      <code>network_id</code> and <code>external_fixed_ips</code>
+      <code>network_id</code>, <code>enable_snat</code>
+      and <code>external_fixed_ips</code>
       parameters.
     </para>
   </wadl:doc>
 </param>
+<param xmlns="http://wadl.dev.java.net/2009/02" required="true"
+  name="enable_snat" style="plain" type="xsd:boolean">
+  <wadl:doc xmlns="http://docbook.org/ns/docbook"
+    xmlns:wadl="http://wadl.dev.java.net/2009/02"
+    xml:lang="EN">
+    <para>
+      Enable Source NAT (SNAT) attribute, a part of ext-gw-mode extension. When a gateway is
+      attached to a router using an L3 extension, Network Address Translation (NAT) is enabled
+      for traffic generated by subnets attached to the router.
+    </para>
+  </wadl:doc>
+</param>
 <param xmlns="http://wadl.dev.java.net/2009/02"
   required="true"
   name="external_fixed_ips" style="plain" type="xsd:list">
diff --git a/api-ref/src/wadls/networking-api/src/samples/routers/router-create-response.json b/api-ref/src/wadls/networking-api/src/samples/routers/router-create-response.json
index 52f42cbdc..8c05a7b3b 100644
--- a/api-ref/src/wadls/networking-api/src/samples/routers/router-create-response.json
+++ b/api-ref/src/wadls/networking-api/src/samples/routers/router-create-response.json
@@ -3,6 +3,7 @@
         "status": "ACTIVE",
         "external_gateway_info": {
             "network_id": "8ca37218-28ff-41cb-9b10-039601ea7e6b",
+            "enable_snat": true,
             "external_fixed_ips": [
                 {
                     "subnet_id": "255.255.255.0",
diff --git a/api-ref/src/wadls/networking-api/src/samples/routers/router-show-response.json b/api-ref/src/wadls/networking-api/src/samples/routers/router-show-response.json
index 3a0e468c8..f113fb764 100644
--- a/api-ref/src/wadls/networking-api/src/samples/routers/router-show-response.json
+++ b/api-ref/src/wadls/networking-api/src/samples/routers/router-show-response.json
@@ -3,6 +3,7 @@
         "status": "ACTIVE",
         "external_gateway_info": {
             "network_id": "85d76829-6415-48ff-9c63-5c5ca8c61ac6",
+            "enable_snat": true,
             "external_fixed_ips": [
                 {
                     "subnet_id": "255.255.255.0",
diff --git a/api-ref/src/wadls/networking-api/src/samples/routers/router-update-response.json b/api-ref/src/wadls/networking-api/src/samples/routers/router-update-response.json
index 52f42cbdc..8c05a7b3b 100644
--- a/api-ref/src/wadls/networking-api/src/samples/routers/router-update-response.json
+++ b/api-ref/src/wadls/networking-api/src/samples/routers/router-update-response.json
@@ -3,6 +3,7 @@
         "status": "ACTIVE",
         "external_gateway_info": {
             "network_id": "8ca37218-28ff-41cb-9b10-039601ea7e6b",
+            "enable_snat": true,
             "external_fixed_ips": [
                 {
                     "subnet_id": "255.255.255.0",
diff --git a/api-ref/src/wadls/networking-api/src/samples/routers/routers-list-response.json b/api-ref/src/wadls/networking-api/src/samples/routers/routers-list-response.json
index abb14995d..7e473fff2 100644
--- a/api-ref/src/wadls/networking-api/src/samples/routers/routers-list-response.json
+++ b/api-ref/src/wadls/networking-api/src/samples/routers/routers-list-response.json
@@ -13,6 +13,7 @@
             "status": "ACTIVE",
             "external_gateway_info": {
                 "network_id": "3c5bcddd-6af9-4e6b-9c3e-c153e521cab8",
+                "enable_snat": true,
                 "external_fixed_ips": [
                     {
                         "subnet_id": "255.255.255.0",