Re: Strange sshd behaviour

["Steven M. Bellovin" <smb%cs.columbia.edu@localhost>]

On Thu, 22 Jan 2009 18:10:21 -0800 (PST)
Paul Goyette <paul%whooppee.com@localhost> wrote:

> On Fri, 23 Jan 2009, Rhialto wrote:
> 
> > On Thu 22 Jan 2009 at 13:22:43 -0800, Paul Goyette wrote:
> >> debug1: SSH2_MSG_SERVICE_REQUEST sent
> >> debug2: service_accept: ssh-userauth
> >> debug1: SSH2_MSG_SERVICE_ACCEPT received
> >>
> >> It never attempts to negotiate authentication mechanisms with the
> >> target machine.
> >>
> >> Anyone else seeing anything similar?  Any clues on what to try?
> >
> > I see something similar if I ssh from my Eee with Ubuntu to my
> > NetBSD 4.0 machine, but only if I use IPv6, not when using IPv4. It
> > gets this far:
> <snip>
> 
> Well, IPv6 is definitely not my problem, since I run a strictly-IPv4 
> network here.  My (non-modular) kernel doesn't even have IPv6
> compiled in.
> 
How long do you wait?  Often, long but not infinite delays are due to
DNS lookup issues.


                --Steve Bellovin, http://www.cs.columbia.edu/~smb