The problem with legislating technology is that people in power generally don't understand technobabble

Check this out. Happily, it's being pursued on a state, not federal level. Still...

USE A FIREWALL, GO TO JAIL
http://www.freedom-to-tinker.com/archives/000336.html

"If you have a home DSL router, or if you use the "Internet Connection Sharing" feature of your favorite operating system product, you're in violation because these connection sharing technologies use NAT. Most operating system products (including every version of Windows introduced in the last five years, and virtually all versions of
Linux) would also apparently be banned, because they support connection sharing via NAT."