We should be able to explicitly configure the OVS ARP Responder feature. To enable: 1. Enable L2 population (see https://bugzilla.redhat.com/show_bug.cgi?id=1271335) 2. set the following value in the OVS Agent configuration for all nodes running an OVS agent: [agent] arp_responder = True
This bug is against a Version which has reached End of Life. If it's still present in supported release (http://releases.openstack.org), please update Version and reopen.