The same hardware different ethernet device names

Hello,

I've got several Intel server platforms .... on every platform I upgraded BIOS to the latest version and installed Debian Etch. On five of them I have two ethernet interfaces eth0/eth1 but ONLY one has eth1 eth2 actually eth2/eth1 - this order.

debian:~# cat /proc/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
lo: 6272 59 0 0 0 0 0 0 6272 59 0 0 0 0 0 0
eth0:70052053 724027 0 0 0 0 0 0 13840349 10660 0 0 0 0 0 0
eth1: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
debian:~#

debian:~# cat /proc/net/dev
Inter-| Receive | Transmit
face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
lo: 1744 19 0 0 0 0 0 0 1744 19 0 0 0 0 0 0
eth2: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
eth1:69578781 718143 0 0 0 0 0 0 106021 1375 0 0 0 0 0 0
debian:~#

How this is possible? How kernel/module (e1000) calculates interface number and what can cause such "disorder"?

Regards,
Marcin


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