"Comcast is discriminating among different kinds of Internet traffic based on the protocols being used by its customers," said EFF Senior Intellectual Property Attorney Fred von Lohmann. "When confronted, Comcast has been evasive and misleading in its responses, so we decided to start gathering the facts ourselves."
For "Packet Forgery by ISPs: A Report on the Comcast Affair":
For "Detecting Packet Injection: A Guide to Packet Spoofing by ISPs":
For more on EFF’s research into Comcast’s packet monitoring: