diff --git a/de/heat-templates/fragments/vmx-components/bridges/bridges_internal.yaml b/de/heat-templates/fragments/vmx-components/bridges/bridges_internal.yaml
index 4e203bf..684b1a4 100644
--- a/de/heat-templates/fragments/vmx-components/bridges/bridges_internal.yaml
+++ b/de/heat-templates/fragments/vmx-components/bridges/bridges_internal.yaml
@@ -18,6 +18,9 @@
       network_id: {get_resource: bridge_net_re_pfe}
       enable_dhcp: False
       gateway_ip: 128.0.0.3
+      allocation_pools:
+        - start: 128.0.0.250
+          end: 128.0.0.254
     type: OS::Neutron::Subnet
 
 outputs: