diff --git a/tcp_tests/templates/virtual-mcp11-k8s-calico/underlay.yaml b/tcp_tests/templates/virtual-mcp11-k8s-calico/underlay.yaml
index d5bbb3a..b75127a 100644
--- a/tcp_tests/templates/virtual-mcp11-k8s-calico/underlay.yaml
+++ b/tcp_tests/templates/virtual-mcp11-k8s-calico/underlay.yaml
@@ -45,7 +45,7 @@
             default_{{ HOSTNAME_MON01 }}: +107
             default_{{ HOSTNAME_MON02 }}: +108
             default_{{ HOSTNAME_MON03 }}: +109
-            default_{{ HOSTNAME_PRX01 }}: +110
+            default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
             dhcp: [+90, -10]
 
@@ -64,7 +64,7 @@
             default_{{ HOSTNAME_MON01 }}: +107
             default_{{ HOSTNAME_MON02 }}: +108
             default_{{ HOSTNAME_MON03 }}: +109
-            default_{{ HOSTNAME_PRX01 }}: +110
+            default_{{ HOSTNAME_PRX01 }}: +121
           ip_ranges:
             dhcp: [+90, -10]