Whence commeth eth0?

Mikkel L. Ellertson mikkel at infinity-ltd.com
Tue Aug 25 16:53:45 UTC 2009


Geoffrey Leach wrote:
> My ASUS MB returned from repair with ethernet device changed from eth0 
> to eth1 and a new MAC address. Is this information encoded on the chip 
> (meaning that they replaced the chip) or ... ?
> 
> Thanks.
> 
No - udev records the MAC address for each NIC, so that the names do
not change if you add another NIC. But a side affect of this is that
when you change NICs, then new on gets the next free name. You can
sove your problem by deleting
/etc/udev/rules.d/70-persistent-net.rules. You may also need to edit
the config file for eth0 if it also has the MAC address in it.
(HWADDR=). When you reboot, the new NIC will be eth0 instead of eth1.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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