diff --git a/tcp_tests/templates/cookied-bm-mcp-ocata-contrail/underlay.yaml b/tcp_tests/templates/cookied-bm-mcp-ocata-contrail/underlay.yaml
index f464e3d..ac7a2da 100644
--- a/tcp_tests/templates/cookied-bm-mcp-ocata-contrail/underlay.yaml
+++ b/tcp_tests/templates/cookied-bm-mcp-ocata-contrail/underlay.yaml
@@ -3,7 +3,7 @@
 
 #{% set DOMAIN_NAME = os_env('LAB_CONFIG_NAME', 'physical_mcp11_ovs_dpdk') + '.local' %}
 {% set LAB_CONFIG_NAME = os_env('LAB_CONFIG_NAME', 'cookied-bm-mcp-ocata-contrail') %}
-{% set DOMAIN_NAME = 'cookied-bm-mcp-ocata-contrail.local' %}
+{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME + '.local') %}
 {% set HOSTNAME_CFG01 = os_env('HOSTNAME_CFG01', 'cfg01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_KVM01 = os_env('HOSTNAME_KVM01', 'kvm01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_KVM02 = os_env('HOSTNAME_KVM02', 'kvm02.' + DOMAIN_NAME) %}
diff --git a/tcp_tests/templates/cookied-bm-mcp-ocata-dvr-vxlan/underlay.yaml b/tcp_tests/templates/cookied-bm-mcp-ocata-dvr-vxlan/underlay.yaml
index 06c353b..dbe0930 100644
--- a/tcp_tests/templates/cookied-bm-mcp-ocata-dvr-vxlan/underlay.yaml
+++ b/tcp_tests/templates/cookied-bm-mcp-ocata-dvr-vxlan/underlay.yaml
@@ -1,7 +1,7 @@
 # Set the repository suite, one of the: 'nightly', 'testing', 'stable', or any other required
 {% set REPOSITORY_SUITE = os_env('REPOSITORY_SUITE', 'testing') %}
 {% set LAB_CONFIG_NAME = os_env('LAB_CONFIG_NAME', 'cookied-bm-mcp-ocata-dvr-vxlan') %}
-{% set DOMAIN_NAME = 'cookied-bm-mcp-ocata-dvr-vxlan.local' %}
+{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME + '.local') %}
 {% set HOSTNAME_CFG01 = os_env('HOSTNAME_CFG01', 'cfg01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_KVM01 = os_env('HOSTNAME_KVM01', 'kvm01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_KVM02 = os_env('HOSTNAME_KVM02', 'kvm02.' + DOMAIN_NAME) %}
diff --git a/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/underlay.yaml b/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/underlay.yaml
index ab31534..028822a 100644
--- a/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/underlay.yaml
+++ b/tcp_tests/templates/cookied-mcp-ocata-dop-sl2/underlay.yaml
@@ -2,7 +2,7 @@
 {% set REPOSITORY_SUITE = os_env('REPOSITORY_SUITE', 'testing') %}
 
 {% set LAB_CONFIG_NAME = os_env('LAB_CONFIG_NAME', 'cookied-mcp-ocata-dop-sl2') %}
-{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME) + '.local' %}
+{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME + '.local') %}
 {% set HOSTNAME_CFG01 = os_env('HOSTNAME_CFG01', 'cfg01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CID01 = os_env('HOSTNAME_CID01', 'cid01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CID02 = os_env('HOSTNAME_CID02', 'cid02.' + DOMAIN_NAME) %}
diff --git a/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay.yaml b/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay.yaml
index 823002f..0d9930a 100644
--- a/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay.yaml
+++ b/tcp_tests/templates/cookied-mcp-ocata-dvr-vxlan/underlay.yaml
@@ -2,7 +2,7 @@
 {% set REPOSITORY_SUITE = os_env('REPOSITORY_SUITE', 'testing') %}
 
 {% set LAB_CONFIG_NAME = os_env('LAB_CONFIG_NAME', 'cookied-mcp-ocata-dvr-vxlan') %}
-{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME) + '.local' %}
+{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME + '.local') %}
 {% set HOSTNAME_CFG01 = os_env('HOSTNAME_CFG01', 'cfg01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CID = os_env('HOSTNAME_CID', 'cid.' + DOMAIN_NAME) %}
 {% set HOSTNAME_CID01 = os_env('HOSTNAME_CID01', 'cid01.' + DOMAIN_NAME) %}
diff --git a/tcp_tests/templates/physical_mcp11_ovs_dpdk/underlay.yaml b/tcp_tests/templates/physical_mcp11_ovs_dpdk/underlay.yaml
index ea18e1f..562a282 100644
--- a/tcp_tests/templates/physical_mcp11_ovs_dpdk/underlay.yaml
+++ b/tcp_tests/templates/physical_mcp11_ovs_dpdk/underlay.yaml
@@ -3,7 +3,7 @@
 
 {% set LAB_CONFIG_NAME = os_env('LAB_CONFIG_NAME', 'physical_mcp11_ovs_dpdk') %}
 #{% set DOMAIN_NAME = os_env('DOMAIN_NAME', LAB_CONFIG_NAME) + '.local' %}
-{% set DOMAIN_NAME = 'mcp11-ovs-dpdk.local' %}
+{% set DOMAIN_NAME = os_env('DOMAIN_NAME', 'mcp11-ovs-dpdk.local') %}
 {% set HOSTNAME_CFG01 = os_env('HOSTNAME_CFG01', 'cfg01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_KVM01 = os_env('HOSTNAME_KVM01', 'kvm01.' + DOMAIN_NAME) %}
 {% set HOSTNAME_KVM02 = os_env('HOSTNAME_KVM02', 'kvm02.' + DOMAIN_NAME) %}