RE: [Xen-users] Dom0 cannot see network when bridge is enabled

["Fischer, Anna" <anna.fischer@xxxxxx>]

> I've seen a lot of threads w/ similar problems, but none have 
> posted a resolution.
> 
> I am using Debian 4.0r1 (Etch). I was using the xen packages 
> from stable, but have tried w/ testing as well and the 
> problem persists.
> 
>   http://pastie.caboo.se/95144
> 
> Host is 10.0.0.20 on network 10.0.0.0/24.
> 
> Dom0 is thus 10.0.0.20
> 
> DomU is 10.0.0.30
> 
> When the bridge is enabled, DomU can ping everything. 
> Everything can ping DomU.
> 
> Dom0 can only ping DomU and itself. It can't see the 
> 10.0.0.0/24 network or anything beyond.
> 
> tcpdumps have not shown any ICMP traffic on any of the 
> interfaces I can see from within the Dom0, and machines in 
> 10.0.0.0/24 being pinged from the Dom0 see nothing either.
> 
> I'm trying to work out how it's supposed to work. It looks 
> like the bridge works by binding all the interfaces together 
> via a common mac address, is this correct?
> 
> How then, do peth0 and eth0 see each other's traffic?

I assume you have already checked this, but did you look at your
iptables configuration to make sure that packet filtering is not
blocking any traffic?

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