diff --git a/etc/openstack-config/openstack-config.yml b/etc/openstack-config/openstack-config.yml
index fc2b253..9ef7856 100644
--- a/etc/openstack-config/openstack-config.yml
+++ b/etc/openstack-config/openstack-config.yml
@@ -117,6 +117,7 @@ openstack_network_external_internet:
   # Subnet configuration.
   subnets:
     - "{{ openstack_subnet_external_internet }}"
+    - "{{ openstack_subnet_external_internet2 }}"
 
 openstack_subnet_external_internet:
   name: "{{ openstack_network_external_internet_name }}"
@@ -124,7 +125,15 @@ openstack_subnet_external_internet:
   cidr: "10.129.30.0/23"
   gateway_ip: "10.129.31.254"
   allocation_pool_start: "10.129.30.20"
-  allocation_pool_end: "10.129.31.240"
+  allocation_pool_end: "10.129.31.250"
+
+openstack_subnet_external_internet2:
+  name: "{{ openstack_network_external_internet_name }}2"
+  project: "admin"
+  cidr: "10.129.29.0/24"
+  gateway_ip: "10.129.29.254"
+  allocation_pool_start: "10.129.29.20"
+  allocation_pool_end: "10.129.29.250"
 
 # List of routers in the openstack project. Format is as required by the
 # stackhpc.os-networks role.