[CentOS] the wandering MAC?

Boris Epstein borepstein at gmail.com
Mon Nov 29 13:58:31 EST 2010


On Wed, Oct 13, 2010 at 12:28 PM, Boris Epstein <borepstein at gmail.com> wrote:
> Hi all,
>
> I have what appears to be a truly puzzling problem. I've got this P4
> 32-bit machine running CentOS 5.5 with XEN that has two NICs: one
> onboard, an Intel Corporation 82540EM Gigabit and one on an expansion
> card, Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit. The second one
> is recognized as eth1.
>
> What's happening is, it is showing up under one of the two MAC's:
> either 00:0a:cd:1a:c1:71 or 00:00:00:00:c1:71. If you reboot it the
> MAC stays the same; if you shutdown and do a full powerdown it seems
> to change.
>
> Obviously, after it goes from one MAC to another you have to play with
> the start-up scripts for this interface to start up correctly and this
> becomes a major annoyance.
>
> Any idea what all of this mess could mean?
>
> Thanks.
>
> Boris.
>

OK, people, here's something looks promising:

http://www.centos.org/modules/newbb/viewtopic.php?viewmode=flat&order=ASC&topic_id=19571&forum=40#forumpost73378

Looks like there is a whole special repo for this sort of drivers. Has
anybody used it? How is it?

Anyways, I think I'd give it a try.

Cheers,

Boris.


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