Hi Paul You can do this on a linux box with a pretty much basic kernel.
I currently have a similar setup at home with a DSL and a cable line (from different providers). Here's the script I'm actually using: http://ocaholic.ch/download/multinat.txt Some packets are tagged with iptables (SSH as an example) because I want it to prefer the DSL connection. You can do pretty interesting things with it, even per-packet round-robin distribution … which is a Bad Idea™ though. If you want it to fail-over automatically you need to patch the kernel etc. You'll find all information on http://lartc.org/ (especially on http://lartc.org/howto/lartc.rpdb.multiple-links.html) and here: http://www.ssi.bg/~ja/#routes This setup is running for about a year now and it does this quite well. Regards Begin forwarded message: >> >> --- paul.w.benn...@gmail.com wrote: >> From: "Paul Bennett" <paul.w.benn...@gmail.com> >> >> At home, I currently run two DSL lines. Right now, we just have two >> separate LANs, one connected to each line, with my wife's devices attached >> to one, and my devices attached to the other. For a while now, I've been >> thinking about setting up a load-balancing routing solution to give both >> of us access to both lines. >> --------------------------------------------------- >> Mathias Seiler MiroNet GmbH, Strassburgerallee 86, CH-4055 Basel T +41 61 201 30 90, F +41 61 201 30 99 mathias.sei...@mironet.ch www.mironet.ch