The BEP mandates
A Cluster Config message MUST be the first post authentication message sent on a BEP connection.
However there are quite a few scenarios where we close a connection before sending a cluster config, e.g. if we have a connection of higher prio. In these cases it would be good to notify the peer that we are closing the connection, but strictly speaking that would violate the BEP (if the other device considers the connection as valid, it will take 5min for it to time out, stalling further connection attempts until then). Is that intended or should the close message be exempt from that?