The ifcfg-br-ex file created by packstack (openstack-packstack-2014.2-0.14.dev1401.gdd19d48.el7.centos.noarch) looks like this:
Those `_br_ex` suffixes are bogus, and mean that upon reboot br-ex will no longer have the assigned address.
(This was the result of running "packstack --allinone")
Bug still exists in Kilo (openstack-packstack-2015.1-0.1.dev1537.gba5183c.el7.noarch).
Is anyone looking into this?
This was fixed by https://review.openstack.org/186677 and included in RDO Kilo.