[OmniOS-discuss] OpenSSH and reverse DNS

[Olaf Marzocchi]

On 29/11/2016 12:50, Lauri Tirkkonen wrote:
> Another interesting thing to note is that this particular log message
> was changed in 7.3:
> https://github.com/openssh/openssh-portable/commit/e690fe85750e93fca1fb7c7c8587d4130a4f7aba
>
> So it actually may be the *client* that is calling
> get_canonical_hostname (which is strange, because only sshd should be
> doing that). And so it is:
> https://github.com/omniti-labs/omnios-build/blob/master/build/openssh/patches/0015-GSS-API-key-exchange-support.patch#L1652
>
> The culprit is thus the GSSAPI patch (which I personally don't even
> agree with, but oh well). I think the option you need to disable in the
> client's ssh_config is GSSAPIKeyExchange.

Changing that option in ssh_config solved the issue.
sshd_config on both client and server are back to standard values for 
UseDNS and GSSAPIAuthentication but still no messages.

Thanks
Olaf