Hi Martin, I met exactly the same issue with yours, could you please show some details about security groups deleting, resyncing and recreating? cause I cleared DEFAULT security group and add 'ovn-sync-mode=repair' in config file then restarted the neutron-server, but didn't work out. best regards sing chia -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20171213/1de879a3/attachment.html>