request: add IP address to a log message to allow blocking

[Damien Miller]

On Tue, 29 Mar 2016, IMAP List Administration wrote:

> Hello,
> 
> I'm seeing a lot of messages like this:
> 
>     fatal: Read from socket failed: Connection reset by peer [preauth]
> 
> I presume they are the result of someone trying a brute-force attack of some
> kind, and would like to ban the attacker, but cannot, because the IP address is
> missing.
> 
> If you haven't already, an you please add the IP address to this message, and
> any similar messages?  I'm using version 6.7p1.

I actually added that recently. It will be in openssh-7.3, due in a
couple of months.

-d