I've added https://review.openstack.org/67911 to help us collect some more details the next time this happens. My best guess is some other tenant in that same flat network has a rogue IPv6 router advertisement daemon running.
I've added https:/ /review. openstack. org/67911 to help us collect some more details the next time this happens. My best guess is some other tenant in that same flat network has a rogue IPv6 router advertisement daemon running.