Comment 2 for bug 114457

Correction: after boot I have to use ifdown THEN ifup because the interface is supposedly "already configured" although it is NOT working or showing up in ifconfig. I can reproduce this using networking restart. It only seems to work (although bug 123773 shows up) when I use ifup or ifconfig up.

/etc/network/interfaces on gutsy box:

auto lo
iface lo inet loopback

auto eth0:0
iface eth0:0 inet static
address 10.0.0.2
netmask 255.255.255.0