I am using a ubuntu box as a router for my house. My problem is that I am the only person in my house with even a slight linux experience and so configuration of the router is solely down to me at the moment.
Its all working well but I have to manually configure eth2 after boot up with the IP address 192.168.2.1 as it doesnt do this automatically. eth0 (essentially the WAN connection) configures automatically from the modem. I would like eth2 to do the same as I want the router to be operational from boot up without manual setting up.
As eth2 isnt setting up on boot I have to start the DHCP server and DNS server.

Im sure there must be a configuration file to configure eth2 but I have done a few googles to no avail.

Thanks

See /etc/network/interfaces (man interfaces)

Example,
auto eth2
iface eth2 inet static
address 192.168.2.1
netmask 255.255.255.0
network 192.168.2.0
broadcast 192.168.2.255
dns-search localnet.home
dns-nameservers 127.0.0.1

Though I'm not sure what Ubuntu has changed compared to Real Debian, this should be the way to configure the interface.

Thankyou

Its exactly the same in ubuntu as in Debian, they havent changed anything.

This is a bit of a cheeky time, but I had my Masquerade script running on boot up, I think (if I remember right) I had a soft link from somewhere. I deleted this link when I realised everything wasnt running from boot. Now I cant find the page I used for the initial set up. Where should I place the script or place a link from? Ive looked up on google again several places have been mentioned which really confused me, can it go in any or is there a 'best' place for this?