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RE: [Xen-users] Problems using NAT in Xen 3.0

from [Ian Pratt]

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Subject:	RE: [Xen-users] Problems using NAT in Xen 3.0
From:	"Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date:	Wed, 7 Sep 2005 14:34:13 +0100
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Thread-topic:	[Xen-users] Problems using NAT in Xen 3.0

> In the above, vif0.0 (what's this for, anyway?) and vif1.0 
> have the same MAC address (fe:ff:ff:ff:ff:ff), which it 
> cannot be good.

That's actually OK.

> So my questions:
> 1. Has anybody managed to use Xen 3.0 unstable with NAT?
> 2. How do I set the MAC of the vif<n>.0 interfaces?
> 3. Do any of you have any suggestions of things I could try 
> in order to
>    diagnose/fix this problem? (I'm a newbie at Linux networking :-))

It may be a problem with h/w checksum offload. Please can you try using
ethtool to disable checksum offload on all interfaces.

Ian

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