From mboxrd@z Thu Jan  1 00:00:00 1970
From: Rob Gardner <rob.gardner@hp.com>
Subject: Re: [Xen-devel] Error: Device 0 (vif) could not be
 connected. (Xen 3.0.1 regression)
Date: Wed, 08 Feb 2006 10:36:11 -0700
Message-ID: <43EA2C0B.4000101@hp.com>
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To: Philippe Berthault <Philippe.Berthault@Bull.net>
Cc: Xen-Devel <Xen-Devel@lists.xensource.com>, Xen-Users <Xen-Users@lists.xensource.com>
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Philippe Berthault wrote:

>
> But with the latest Xen release 3.0.1, the Knoppix boot in a user domain
> fails with the following message :
> Error: Device 0 (vif) could not be connected. Backend device not found.
>

I ran into a very similar sounding problem recently. It turned out that 
the xen tools could not find the bridge utilities. The latest version of 
brctl that I had installed got put into a a directory that wasn't in 
xm's path. So I just copied 'brctl' into /usr/local/sbin or something 
like that. Not sure if your problem is the same, but it's worth checking.

Rob Gardner