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Re: [Xen-users] xen 3.0.3, domUs all use eth1 for first network interfac

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] xen 3.0.3, domUs all use eth1 for first network interface
From: Andy Smith <andy@xxxxxxxxxxxxxx>
Date: Mon, 5 Mar 2007 15:16:04 +0000
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On Sun, Mar 04, 2007 at 11:33:31AM -0600, Jerry Amundson wrote:
> On 3/4/07, Andy Smith <andy@xxxxxxxxxxxxxx> wrote:
> >I've just finished installing Xen 3.0.3 on a server and now find
> >that every domU I create starts with an eth1 instead of eth0.  There
> >is no eth0 at all, according to "ifconfig" and "ip link".
> 
> No eth0 will show if it isn't active.
> This seems to have more to do with distro of the domU's, and how they
> were created. And the xen config file of a dmoU would also help...

It seems that somehow the file:

/etc/udev/rules.d/z25_persistent-net.rules

already had an entry for eth0, so udev was starting from eth1.  As
this was in the same image I was using for all domUs on that
machine, it appeared to be a system-wide issue.  Removing the file
and letting udev create it again made the issue go away.

Doh. :)

Cheers,
Andy

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