LNE100TX lan card detected as eth2

[Charles Roberts <ai4a@bulloch.net>]

system: etch
I installed a new lan card(Linksys model LNE100TX). The system detected 
it and installed the tulip module but the network was not working. I 
executed "ifconfig -a" and it showed the new lan card as eth2 ( the mac 
address was the new lan card) . It should have been eth0. 
/etc/udev/rules.d/z25_persistent-net.rules also showed the new lan card 
as eth2 instead of eth0. By switching eth0 and eth2 around I was able to 
get the network to work again.

Is this a bug?

Is this the correct way to get my network working again?

Charles