I reproduced the problem by modifying one entry of my iftab file so that it 
does not match anymore:
[EMAIL PROTECTED]:~$ cat /etc/iftab
# This file assigns persistent names to network interfaces.  See iftab(5).
eth0 mac 00:11:43:7A:0A:2B# was 2A at the end
eth1 mac 00:12:F0:3F:A9:82
[EMAIL PROTECTED]:~$ ifconfig -a
eth1      Lien encap:Ethernet  HWaddr 00:12:F0:3F:A9:82
          inet adr:152.81.65.185  Bcast:152.81.65.255  Masque:255.255.254.0
[...]

eth2      Lien encap:Ethernet  HWaddr 00:11:43:7A:0A:2A
          BROADCAST MULTICAST  MTU:1500  Metric:1
          Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 lg file transmission:1000
          Octets reçus:0 (0.0 b) Octets transmis:0 (0.0 b)
          Interruption:169
(no eth0 in the list)
[EMAIL PROTECTED]:~$ sudo ifup eth0
Internet Systems Consortium DHCP Client V3.0.3
Copyright 2004-2005 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

SIOCSIFADDR: No such device
eth0: ERROR while getting interface flags: No such device
eth0: ERROR while getting interface flags: No such device
Bind socket to interface: No such device
Failed to bring up eth0.

So, in some sense, there is no error. If you do ifconfig -a, you see
that the eth0 were renamed to eth2. But I filled a BR anyway because 1)
the error message is not clear 2) the problem is not here with old tg3
drivers

If ifup would spit a message like "if you think that the device is
plugged and activated, you may want to check its MAC address in the
/etc/iftab file" or so, I would be more than happy.

-- 
Fails to bring the interface if the mac address don't match
https://launchpad.net/bugs/54589

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