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Re: [Xen-users] dom0 bootup -- Device eth0 has differet mac address than expected

I think he's having problems with Dom0 changing Mac address, rather than the 
domU (is that right?)

Does the original machine have more than one ethernet device?  Perhaps Linux 
is enumerating the cards in a different order when running under Xen so 
you're not using the card you think you are?


On Monday 29 August 2005 03:29, Fajar A. Nugraha wrote:
> datto@xxxxxxxxxxx wrote:
> >CentOS 4.1, Xen 2.0.7. My dom0 is booting up but can't get to the outside
> > network because eth0 won't start due to, apparently, Xen providing a
> > different mac address than expected. How do I tell Xen to start eth0 at
> > the bootup with a specific mac address that lines up with the HWADDR=
> > line in my ifcfg-eth0? Note that a normal bootup into CentOS 4.1 outside
> > of the Grub Xen bootup works fine since it's sensing the mac address of
> > the NIC in the machine rather than what I suspect is a virtualized mac
> > address that Xen provides upon a Xen bootup. I've tried removing the
> > HWADDR= lline in ifcfg-eth0 but that just makes the complaint different
> > and eth0 won't startup at all inside or outside of Xen. Is there
> > someplace in the vif-bridge script to hardcode this required mac address
> > to line it up with the ifcfg-eth0 HWADDR= mac address or is the place to
> > hardcode a fixed mac address for dom0 located somplace else?
> On your dom-U config file, add something like
> vif = ['mac=AA:00:4D:AB:4B:4D,bridge=xen-br0']
> Run "xm help create" for details.
> Regards,
> Fajar
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