Gutsy and renumbered network interfaces?

[Wenzhuo Zhang]

Wenzhuo Zhang wrote:
> I filed a bug about it the other day.
> 
>   https://bugs.launchpad.net/bugs/120806
> 
> According to the developer, /etc/iftab is deprecated. But still, the new
> persistent net udev rules seems to be rather buggy. The only NIC in my
> NIC is named eth2 in Feisty, while eth0 and eth1 are for non-existent

The above sentence should read "The only NIC in my desktop is named eth2
in Gutsy...". Sorry for the confusion.

> e1000 cards.
> 
> Derek Broughton wrote:
>> Marius Gedminas wrote:
>>
>>> On Wed, Jun 20, 2007 at 08:27:19AM -0400, Matthew Carpenter wrote:
>>>> On Wednesday 20 June 2007, Andreas Schildbach wrote:
>>>>> Does anyone know why since a recent "apt-get dist-upgrade" on Gutsy my
>>>>> Ethernet is now mapped to eth3 (was: eth0) and my WLAN to eth2 (was:
>>>>> eth1)?
>>>>>
>>>>> Is this a bug, or is it intentional?
>>>> I'm not running Gutsy yet, but could it have anything to do with
>>>> /etc/iftab? This one bit me recently with VMs, where I copied a VM and
>>>> suddenly I had no eth0 but an eth1, because the MAC address had changed.
>>> I think I've read on this list that Gutsy no longer uses /etc/iftab, but
>>> /etc/udev/rules.d/70-persistent-net.rules to record the mapping from MAC
>>> addresses to interface names.
>> I'm not running gutsy, but that doesn't make much sense to me.  I'd still
>> expect udev to take those rules from /etc/iftab if it exists, if only to
>> maintain backward compatibility,  While anybody can write udev rules, udev
>> development so far has tended to avoid _forcing_ us to write the rules
>> specifically (and even in earlier releases, udev is what actually handles
>> interface naming - but they use iftab if it exists).
> 
>