OpenSSH server doesn't log client disconnect without SSH_MSG_DISCONNECT

[Damien Miller]

On Sat, 1 Jun 2024, Opty wrote:

> Indeed I am.
> 
> What now?

We need to decide whether to promote these log messages to INFO.

> Should PuTTY change its 'perfectly OK to unceremoniously
> slam the connection shut when you're done' attitude?

I don't think they need to. I think it's fair that we log connections
that are terminated regardsless of how graceful the termination was.
E.g. why shouldn't we log connections that drop because the peer
process got SIGINT or the TCP connection dropped before sending a
SSH2_MSG_DISCONNECT?

-d