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xen-users
Re: [Xen-users] nating the bridge
* 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?
thanks
--lars
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