diff --git a/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-cookiecutter-contrail.yaml b/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-cookiecutter-contrail.yaml
index 151dee8..48a601c 100644
--- a/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-cookiecutter-contrail.yaml
+++ b/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-cookiecutter-contrail.yaml
@@ -134,7 +134,7 @@
   opencontrail_enabled: 'True'
   opencontrail_router01_address: ==IPV4_NET_CONTROL_PREFIX==.220
   opencontrail_router01_hostname: rtr01
-  opencontrail_router02_address: ==IPV4_NET_CONTROL_PREFIX==.101
+  opencontrail_router02_address: ==IPV4_NET_EXTERNAL_PREFIX==.220
   opencontrail_router02_hostname: rtr02
   openldap_enabled: 'True'
   openldap_domain: ${_param:cluster_name}.local
diff --git a/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-environment.yaml b/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-environment.yaml
index cfda75e..46ce50c 100644
--- a/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-environment.yaml
+++ b/tcp_tests/templates/heat-cicd-pike-contrail41-sl/salt-context-environment.yaml
@@ -10,6 +10,10 @@
           role: single_static_mgm
         ens4:
           role: single_static_ctl
+        ens6:
+          role: single_external
+          external_address: 10.9.0.15
+          external_network_netmask: 255.255.255.0
 
     cid01:
       reclass_storage_name: cicd_control_node01
diff --git a/tcp_tests/templates/heat-cicd-pike-contrail41-sl/underlay.hot b/tcp_tests/templates/heat-cicd-pike-contrail41-sl/underlay.hot
index 81a1a84..e421244 100644
--- a/tcp_tests/templates/heat-cicd-pike-contrail41-sl/underlay.hot
+++ b/tcp_tests/templates/heat-cicd-pike-contrail41-sl/underlay.hot
@@ -20,7 +20,7 @@
     default: "10.8.0.0/24"
   external_subnet_cidr:
     type: string
-    default: "192.168.200.0/24"
+    default: "10.9.0.0/24"
   management_subnet_cidr:
     type: string
     default: "10.7.0.0/24"