A federal court has ruled that circumventing an IP-address-ban by changing your IP address is criminal. Not even changing your MAC address, mind you, which at least typically is specific to a computer, but your IP address, which isn’t specific to anything or anyone.
This is complete foolishness, and indicates that (a) the judge doesn’t understand how the internet works, and (b) the Computer Fraud and Abuse Act, insofar as it lends itself to nonsensical decisions, is much too vague.
Internet Scofflaw 