diff --git a/tcp_tests/templates/cookied-bm-mcp-ovs-dpdk/underlay.yaml b/tcp_tests/templates/cookied-bm-mcp-ovs-dpdk/underlay.yaml
index ae10126..23eb24c 100644
--- a/tcp_tests/templates/cookied-bm-mcp-ovs-dpdk/underlay.yaml
+++ b/tcp_tests/templates/cookied-bm-mcp-ovs-dpdk/underlay.yaml
@@ -11,6 +11,7 @@
 {% set HOSTNAME_GTW01 = os_env('HOSTNAME_GTW01', 'gtw01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_GTW02 = os_env('HOSTNAME_GTW02', 'gtw02.' + DOMAIN_NAME) %}
 {% set ETH1_IP_ADDRESS_CFG01 = os_env('ETH1_IP_ADDRESS_CFG01', '172.16.49.2') %}
+{% set ETH2_IP_ADDRESS_CFG01 = os_env('ETH2_IP_ADDRESS_CFG01', '10.167.11.253') %}
 {% set ETH0_IP_ADDRESS_KVM01 = os_env('ETH0_IP_ADDRESS_KVM01', '172.16.49.11') %}
 {% set ETH0_IP_ADDRESS_KVM02 = os_env('ETH0_IP_ADDRESS_KVM02', '172.16.49.12') %}
 {% set ETH0_IP_ADDRESS_KVM03 = os_env('ETH0_IP_ADDRESS_KVM03', '172.16.49.13') %}
@@ -57,6 +58,7 @@
         net: {{ os_env('PRIVATE_ADDRESS_POOL01', '10.167.11.0/24:24') }}
         params:
           ip_reserved:
+            virtual_{{ HOSTNAME_CFG01 }}: {{ ETH2_IP_ADDRESS_CFG01 }}
             gateway: +1
             l2_network_device: +1
 
@@ -98,6 +100,9 @@
             dhcp: false
             parent_iface:
               phys_dev: !os_env IRONIC_LAB_PXE_IFACE_0
+          private:
+            parent_iface:
+              phys_dev: !os_env CONTROL_IFACE
 
         group_volumes:
          - name: cloudimage1604    # This name is used for 'backing_store' option for node volumes.
@@ -136,16 +141,16 @@
                   l2_network_device: admin
                   interface_model: *interface_model
                   mac_address: !os_env ETH1_MAC_ADDRESS_CFG01
-                #- label: ens4
-                #  l2_network_device: private
-                #  interface_model: *interface_model
+                - label: ens4
+                  l2_network_device: private
+                  interface_model: *interface_model
               network_config:
                 ens3:
                   networks:
                     - admin
-                #ens4:
-                #  networks:
-                #    - private
+                ens4:
+                  networks:
+                    - private
 
 
       - name: default