ceph/ceph — pull request #2640 by gregsfortytwo (2014-10-03 23:09:20+00:00)
Title: messages: provide an explicit COMPAT_VERSION in MMDSBeacon

We weren't setting an explicit compat version and so the Message
was setting it to the head version, breaking communication with
older daemons.

Fixes: #9657

This is not even compile tested yet.