Traversing X11 clients behind NAT (or X11 end-to-end connectivity)

Otto Solares solca at
Mon Mar 24 10:47:40 PDT 2008

On Mon, Mar 24, 2008 at 06:22:27PM +0100, Sascha Hlusiak wrote:
> Am Montag 24 März 2008 17:49:33 schrieb Otto Solares:
> > On Fri, Mar 21, 2008 at 11:16:52PM +0100, Sascha Hlusiak wrote:
> > >         ... While it's desireable by people to have it work, I'd prefer
> > > IPv6 to come to put NAT finally to it's grave.
> >
> > In my university we receive 304 IPv6 networks (via the BGP protocol)
> > compared to 245966 IPv4 networks, so for practical reasons IPv6 doesn't
> > exists outside the academic and research world, so your IPv6 point is
> > moot (actually).
> That's why I wrote I'd like it to come. I know the present doesn't look too 
> good but still it's usable if you really need end-to-end connectivity (using 
> tunnels). That technology should be improved, not the NAT-hacks. But that's 
> offtopic.
Problem is that those tunnels are actually IPv4 so you are not solving
the NAT problem, so the OP concerns are still valid, IPv6 in IPv4
tunnels have other problems like excessive overhead (CPU and network)
which translates to increased latency for X11 apps.


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