diff --git a/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml b/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml
index f90dceb..9e8899b 100644
--- a/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml
+++ b/tcp_tests/templates/virtual-mcp-pike-ovs/underlay.yaml
@@ -43,9 +43,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
-            default_{{ HOSTNAME_MDB01 }}: +121
-            default_{{ HOSTNAME_MDB02 }}: +122
-            default_{{ HOSTNAME_MDB03 }}: +123
+            default_{{ HOSTNAME_MDB01 }}: +45
+            default_{{ HOSTNAME_MDB02 }}: +46
+            default_{{ HOSTNAME_MDB03 }}: +47
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -63,9 +63,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
-            default_{{ HOSTNAME_MDB01 }}: +121
-            default_{{ HOSTNAME_MDB02 }}: +122
-            default_{{ HOSTNAME_MDB03 }}: +123
+            default_{{ HOSTNAME_MDB01 }}: +45
+            default_{{ HOSTNAME_MDB02 }}: +46
+            default_{{ HOSTNAME_MDB03 }}: +47
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -83,9 +83,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
-            default_{{ HOSTNAME_MDB01 }}: +121
-            default_{{ HOSTNAME_MDB02 }}: +122
-            default_{{ HOSTNAME_MDB03 }}: +123
+            default_{{ HOSTNAME_MDB01 }}: +45
+            default_{{ HOSTNAME_MDB02 }}: +46
+            default_{{ HOSTNAME_MDB03 }}: +47
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
@@ -103,9 +103,9 @@
             default_{{ HOSTNAME_CTL03 }}: +103
             default_{{ HOSTNAME_CMP01 }}: +105
             default_{{ HOSTNAME_CMP02 }}: +106
-            default_{{ HOSTNAME_MDB01 }}: +121
-            default_{{ HOSTNAME_MDB02 }}: +122
-            default_{{ HOSTNAME_MDB03 }}: +123
+            default_{{ HOSTNAME_MDB01 }}: +45
+            default_{{ HOSTNAME_MDB02 }}: +46
+            default_{{ HOSTNAME_MDB03 }}: +47
             default_{{ HOSTNAME_GTW01 }}: +110
             default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges: