>> 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
> It turns out it was just a fluke the server booted up with the correct
> order. Another reboot and the nic's are all screwed up again, the
> built in and external card sharing eth0, the second built in as eth1.
> On the second server, things are the same even with the new rules, nic
> drvier order is seemingly chosen at random with each boot.
Do you have anything else in 60-net.rules other than these three rules?
Try prepending "KERNEL=="eth*, "" and/or "ACTION=="add, "".