[Tfug] Frustrating: determining eth0 or eth1

[Harry McGregor]

Debian Etch and above uses persistent network interferfaces, based on
MAC addresses.

It drives me nuts with my classes, as if a student moves between
computers (each with a via rhine and an rtl8169) they get two new
interfaces, and networking is setup on the old interfaces
(/etc/network/interfaces).

You can change this by editing /etc/udev/rules.d/z25_pesistent_net (or
something close to that).


                                            Harry

Matt Jacob wrote:
> Hey guys:
>
> I recently swapped out my network card for a better one, and now the
> kernel is all confused. There was only one NIC in the box to begin
> with, and there's still only one now, but for some reason Debian is
> acting like the drunk uncle who can never remember your name.
>
> According to syslog, we're dealing with eth0:
>
> Jun 24 13:31:10 ned kernel: eth0: ADMtek Comet rev 17 at 0001e000,
> 00:04:5A:5D:83:71, IRQ 11.
>
> However, I need this in my /etc/network/interfaces in order for the
> card to come up automatically on boot:
>
> auto eth1
> allow-hotplug eth1
> iface eth1 inet static
>     address 10.1.1.3
>     netmask 255.0.0.0
>     gateway 10.1.1.1
>
> Looking at dmesg is equally confusing:
>
> ned:~# dmesg|grep eth
> eth0: ADMtek Comet rev 17 at 0001e000, 00:04:5A:5D:83:71, IRQ 11.
> eth1: Setting full-duplex based on MII#1 link partner capability of 45e1.
> eth1: no IPv6 routers present
>
> Any ideas? I've been toying with the idea of taping the Debian
> squiggly logo up on a target when I go to the range later this
> afternoon...
>
> Matt
>
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