Re: [Xen-users] 'Wandering' eth interface - Xen 3.0.4 + linux 2.6.16.29

[Tom Allen <tallen@xxxxxxxxxx>]

udev is likely trying to make your network cards keep the same
addresses.  You can put something like this in
/etc/udev/rules.d/z25_persistent-net.rules:

# Xen virtual device (vif)
# We want to ignore this event, and let Xen set things up the
# way we specified in the config file.
SUBSYSTEM=="net", DRIVERS=="?*", 
ATTRS{address}=="00:16:3e:*",OPTIONS="ignore_device"

Another alternative is to specify the mac address when you create the domU.

Tom


On Tue, 1 May 2007, TMC wrote:

> I have a Xen 3.0.4 with Debian Etch (4.0) running quite successfully...
>
> except for an annoying problem, which i have not observed in other
> DomU instances, nor have I observed it with my test server...
>
> The problem I am observing in that one domain is that on reboot, the
> eth interface seems to "wander" - that is  monotonically increase the
> index value...
>
> so on one reboot  it will be eth0 on next eth1, on one after that eth3
> and so on.
> Of course this causes all sorts of scripts to fail, and manual
> intervention is required.
>
> has anyone else seen this misbehaviour?
>
> Is there a method of pinning or making this behaviour consistent?
>
> Tomasz
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