diff --git a/playbooks/group_vars/adns.yaml b/playbooks/group_vars/adns.yaml
new file mode 100644
index 0000000000..9af283dc78
--- /dev/null
+++ b/playbooks/group_vars/adns.yaml
@@ -0,0 +1,7 @@
+iptables_extra_allowed_hosts:
+  - protocol: tcp
+    port: 53
+    hostname: ns1.openstack.org
+  - protocol: tcp
+    port: 53
+    hostname: ns2.openstack.org