diff --git a/neutron_tempest_plugin/config.py b/neutron_tempest_plugin/config.py
index a40fb0d..766582b 100644
--- a/neutron_tempest_plugin/config.py
+++ b/neutron_tempest_plugin/config.py
@@ -147,6 +147,9 @@
     cfg.BoolOpt('bgp_schedule_speakers_to_agents',
                 default=False,
                 help='Schedule BGP speakers to agents explicitly.'),
+    cfg.StrOpt('dns_domain',
+               default='openstackgate.local',
+               help='Name of internal dns zone to use in tests. '),
 ]
 
 # TODO(amuller): Redo configuration options registration as part of the planned