No message received on ActiveMQ.Advisory.MasterBroker

I need to define a camel route that listen to the ActiveMQ.Advisory.MasterBroker topic, for having notification about Master / Slave failover.I wasn't able to receive any event from that topic in A-MQ 6.1. I suppose this to be related to https://issues.apache.org/jira/browse/AMQ-4108, even if the version of AMQ shipped in 6.1 should be already fixed (5.9).Forcing that topic to be retroactive (e.g. adding a policy like <policyEntry topic=">" alwaysRetroactive="true"/> ), the Advisory message are delivered for a while, but the whole thing is a bit unstable (e.g. that setting disappear after a failover).In details, I've noticed, in my local setup (2 A-MQ node in master-slave with a shared local filesystem), that after a failover (e.g. kill -9 of the master process), the ActiveMQ.Advisory.MasterBroker stops delivering messages (and also checking the alwaysRetroactive propriety via JMX, I can see that become false, ignoring the policy).