In order for ipv6 to work with pacemaker in OSP8, we need to update to: https://github.com/redhat-openstack/puppet-pacemaker/commit/e9a8f0d048c1bbc86a4bb1ee81417da3afe6673e
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHEA-2016-0603.html