Public bug reported:

After upgrading from 9.04 to 9.10 alpha5 the NIC is configured by DHCP
instead of using the interfaces file (given below).

I expected the network settings of eth0 to be the same as before the
upgrade.

A strange thing:
==========
sudo ifconfig eth0 down

sudo ifconfig eth0 192.168.2.2 up 
now the eth0 interface has IP=192.168.2.2

sudo route add  default gw 192.168.2.10

now the interface has IP=192.168.2.106, the IP it gets from the DHCP
server, weird.


System information:
==============
uname:
p...@quadro:~$ uname -a
Linux quadro 2.6.31-10-generic #32-Ubuntu SMP Thu Sep 10 23:29:56 UTC 2009 
x86_64 GNU/Linux

p...@quadro:~$ lsb_release -rd
Description:    Ubuntu karmic (development branch)
Release:        9.10

/etc/network/interfaces
p...@quadro:~$ cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
  address 192.168.2.2   
  netmask 255.255.255.0
  network 192.168.2.0
  broadcast 192.168.2.255
  gateway 192.168.2.10


Snip from /var/log/messages:
--
 ADDRCONF(NETDEV_UP): eth0: link is not ready
Sep 15 21:19:24 quadro kernel: [ 3169.484856] e1000e: eth0 NIC Link is Up 1000 
Mbps Full Duplex, Flow Control: RX/TX
Sep 15 21:19:24 quadro kernel: [ 3169.485315] ADDRCONF(NETDEV_CHANGE): eth0: 
link becomes read
--

** Affects: ubuntu
     Importance: Undecided
         Status: New

-- 
NIC configuration incorrect after upgrade to karmic alpha5
https://bugs.launchpad.net/bugs/430255
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