Tether your Droid to an Arch machine

I've yanked this code from a chap named Shannon VanWagner. This is by-and-large his code; I've only made modifications necessary to retrofit the code to Arch and some cosmetic ones for my own sanity. He seems like a freetard so he probably won't care that I'm redistributing it like this.

Using it

1. Read the code. Understand it. Modify it; you'll need to.
2. Run it with sudo.