UNIX for Dummies Questions & Answers

Our shops server runs SCO Openserver 5 release 5. It has two network cards in it (one on 10.0.0.6 and one on 90.0.0.99). When I run scoadmin and look at the network settings it show both my 3com network cards and a loop back driver http://theentertainer.com/james/untitled.jpg

Can anyone tell me what the loop back driver is and how I bridge the two network cards so they forward all requests for the 90 seroes network from the 10 series card to the 90 series card

Check out this post and the link to SCO Default router. This should give you a clue on how to do it.

As far as loopback, all systems have it. It's the localhost (127.0.0.1), a way for the server to connect to itself (part of the kernel). It isn't part of your problem of getting traffic from one card to the other.