[Bug 164] X-forwarding when connecting to an IPv6-enabled host doesn't work.

[Pekka Savola]

On Mon, 28 Oct 2002, Gert Doering wrote:
> On Mon, Oct 28, 2002 at 12:03:26PM +0200, Pekka Savola wrote:
> > In any case, I'd like to see demonstrated failures.
> > 
> > SSH over IPv6 + X-forwarding works just fine for me...
> 
> But in that case, it's still likely that X11 would actually speak IPv4
> on both ends - v4 over v6 and vice versa, and even "client via v6
> into ssh, sshd via v4 to server" works fine, as the forwarded L3/L4 
> protocols are completely decoupled from the ssh session.

Indeed.

The problem is likely caused by ssh/sshd forced with -6: this forces X11 
forwarding to use IPv6 for X or fail. Without -6, X uses either IPv4 or 
IPv6 just fine.

This was just my quick guess, possibly wrong though...

-- 
Pekka Savola                 "Tell me of difficulties surmounted,
Netcore Oy                   not those you stumble over and fall"
Systems. Networks. Security.  -- Robert Jordan: A Crown of Swords