Consumer-grade dual-homed connectivity options?

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:

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 (especially on and here:

This setup is running for about a year now and it does this quite well.