[CentOS] again, nic driver order

Tom H tomh0665 at gmail.com
Sat Nov 28 19:15:33 UTC 2009

>>> Digging around google a bit more I came up with different rules, and
>>> fingers crossed, they seem to work!
>>> SUBSYSTEM=="net", SYSFS{address}=="00:1b:21:4d:c3:e8", NAME="eth0"
>>> # pro/1000gt
>>> SUBSYSTEM=="net", SYSFS{address}=="00:e0:81:b5:7a:30", NAME="eth1"
>>> # internal 1
>>> SUBSYSTEM=="net", SYSFS{address}=="00:e0:81:b5:7a:31", NAME="eth2"
>>> # internal 2

> Don't touch udev, expecting admins to write udev rules for network
> interface binding is just not realistic. Udev rules are meant to be
> static across hardware reconfigurations while ifcfg files are meant to
> be modified to suit your current configuration.

> Use HWADDR="00:1b:21:4d:c3:e8" in the ifcfg files along with NAME=eth0
> for eth0 and so on.

I read a while ago that udev overrode ifcfg-* settings so I did a
clean install of 5.4 and changed:
ifcfg-eth0 to ifcfg-eth9 (file name)
eth0 to eth9 (inside the file)
the last number of the HWADDR line

The nic came up as eth0 with the old/original mac address after a reboot.

So we unfortunately have to write udev rules when we have nic naming problems...

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