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Re: [Xen-users] nating the bridge



Am Samstag, 8. Juli 2006 11:34 schrieb Lars Wilke:
> * Lars Wilke wrote:
> > i have now a working domU which is bridged into the dom0.
> > I have set as gateway the bridge device. So far this works
> > i can access the domU from the dom0 (for example using ssh
> > or http). The access from domU into dom0 works, too.
> > But i can not get a working NAT setup to route the traffic
> > from domU into the internet.
> > I tried a few variants, switching of tx checks on the
> > ethernet device, disabling connection tracking via NOTRACK
> > target of iptables etc.
> >
> > IP forwarding is enabled in the kernel and via echo 1 /proc/...
> > all no luck. So i ask you is there somewhere a document
> > detailing a debbuging of such an behavour or something like that?
> > I looked around for quite a while and tried some howtos, but
> > nothing could help to get that beast working.
> 
> The ebtables documentation explains at least partially this behaviour.
> The traversal of the packages changes when a bridge comes into play.
> So i switched to the nat scripts. These works insofar as i can now
> ping the world from inside a domU. But things like traceroute and
> dns lookups won't work now. These tools just "hang", though a ping
> send to my DNS server gets a reply as expected.
> 
> I use the standdard MASQ and FORWARD rules setup by the nat scripts.
> Has anybody an idea how i could debug this any further?

I have the same behaviour. Has anyone an idea, what went wrong in the nat 
scripts?

Johnny

> 
> thanks
> 
>    --lars
> 
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