Re: [SOLVED] dreaded ethernet device renaming
On Thu, 31 Mar 2011 20:06:51 -0400 (EDT)
Stephen Powell <zlinuxman@wowway.com> wrote:
> On Thu, 31 Mar 2011 10:34:32 -0400 (EDT), briand@aracnet.com wrote:
> >
> > Thanks to everyone who responded !
> >
> > That explains everything. I changed motherboards out from under the
> > system. So it appended the new eth to the old ones.
> >
> > It seems to me that this is a really ugly user trap, even if it's a
> > trap you get into replacing the old motherboard.
>
> Yes, if the motherboard contains a built-in network interface, as
> many of them do, then replacing the motherboard has the same effect
> on network interface name assignments as if you had replaced a NIC
> card. The built-in network interface has a different MAC address than
> the old one, and that's how udev assigns interface names: by MAC
> address. You can get rid of your home-made udev rule. This can also
> occur if you (1) move the hard drive from one machine to another, (2)
> backup from one computer and restore to another, etc. It seems that
> everyone gets burned by this at least once. But once you find the
> solution, you never forget it.
>
lol, that's for sure !
Brian
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