> it on a Debian woody box running a 2.4.10 kernel. I need to know what files > to edit and what the format of the configuration.
I run potato and 2.4.x kernels. You don't need anything special in the kernel anymore, just CONFIG_INET. Have a look at linux-source/Documentation/networking/alias.txt. Then, put something like the following in /etc/network/interfaces: iface lo inet loopback iface eth0 inet static address X.Y.Z.W0 netmask 255.255.255.0 network X.Y.Z.0 broadcast X.Y.Z.255 gateway X.Y.Z.1 iface eth0:0 inet static address X.Y.Z.W1 netmask 255.255.255.0 network X.Y.Z.0 broadcast X.Y.Z.255 up route add -host X.Y.Z.W1 dev eth0:0 -Igor Mozetic
