Comment 14 for bug 1251137

Changed the title to:
"Galera Replication from 5.6 node to 5.5 node fails"

This bug is used to track issues with replication from 5.6 node to 5.5 node. There is a separate bug to track issues with replication in opposite direction: https://bugs.launchpad.net/codership-mysql/+bug/1267494

Note that 5.6 -> 5.5 replication is not critical for migration to 5.6 cluster. The migration can work by using one 5.5 master while upgrading all slaves to 5.6 level, and for this process only 5.5 -> 5.6 replication will be needed

5.6 -> 5.5 replication will be needed only if the 5.6 migration needs to happen in multi-master mode, or there is need to maintain hybrid 5.6-5.6 cluster for long term