diff --git a/vmware_nsx/plugins/common/plugin.py b/vmware_nsx/plugins/common/plugin.py
index a24c6e720e..f26147b58a 100644
--- a/vmware_nsx/plugins/common/plugin.py
+++ b/vmware_nsx/plugins/common/plugin.py
@@ -180,7 +180,8 @@ class NsxPluginBase(db_base_plugin_v2.NeutronDbPluginV2,
                 subnet_qry = context.session.query(models_v2.Subnet)
                 subnet = subnet_qry.filter_by(id=ip.subnet_id).one()
                 subnets.append({'id': subnet.id, 'cidr': subnet.cidr,
-                                'subnetpool_id': subnet.subnetpool_id})
+                                'subnetpool_id': subnet.subnetpool_id,
+                                'ip_version': subnet.ip_version})
         return subnets
 
     def _find_router_gw_subnets(self, context, router):
diff --git a/vmware_nsx/plugins/nsx_v/plugin.py b/vmware_nsx/plugins/nsx_v/plugin.py
index 6b6192df7c..e4dfb3119a 100644
--- a/vmware_nsx/plugins/nsx_v/plugin.py
+++ b/vmware_nsx/plugins/nsx_v/plugin.py
@@ -3322,7 +3322,9 @@ class NsxVPluginV2(addr_pair_db.AllowedAddressPairsMixin,
             subnets = self._find_router_subnets(context.elevated(),
                                                 router['id'])
             for subnet in subnets:
-
+                # Do not build NAT rules for v6
+                if subnet.get('ip_version') == 6:
+                    continue
                 # if the subnets address scope is the same as the gateways:
                 # no need for SNAT
                 gw_address_scope = self._get_network_address_scope(