diff --git a/snap-overlay/bin/configure-openstack b/snap-overlay/bin/configure-openstack
index c742912..b00b49e 100755
--- a/snap-overlay/bin/configure-openstack
+++ b/snap-overlay/bin/configure-openstack
@@ -119,6 +119,23 @@ openstack subnet show test-subnet || {
     openstack subnet create --network test --subnet-range 192.168.222.0/24 test-subnet
 }
 
+openstack network show external || {
+    openstack network create --external \
+        --provider-physical-network=physnet1 \
+        --provider-network-type=flat external
+}
+
+openstack subnet show external-subnet || {
+    openstack subnet create --network external --subnet-range 10.20.20.0/24 \
+        --no-dhcp external-subnet
+}
+
+openstack router show test-router || {
+    openstack router create test-router
+    openstack router add subnet test-router test-subnet
+    openstack router set --external-gateway external test-router
+}
+
 # Glance
 echo "Configuring Glance"