Currently, when the IPs in the cluster join request differ from the ones discovered, Bitbucket rejects the join and logs:

"Please make sure all members share the same value for 'hazelcast.group.name' and 'hazelcast.group.password' in bitbucket.properties."

This message is misleading. Bitbucket should detect when a join is rejected because of mismatched IPs and log a clear, specific message indicating that the rejection was due to address differences rather than a group name/password mismatch.