Er, I mean ignoring the welcome message only if it is the first connection on a fresh connection. So seeing a debug message any time an invalid message is received, even if it has `server_id`, unless it is the first message after a reconnect.

But really, its not a big deal. If it is unduly tricky, don't worry about it.

Would like the bigger comment, though. With the word 'deprecated' (git grep fodder) and maybe a cross-reference to the place where the message a is sent.