Re: Why are the ISPs making such a fuss?
Incorrect. What the IPB asks for is - extremely vague, but by any reading it's a great deal more data than just IP addresses. It's "whatever data can logically be separated from the 'content' of the message".
That could include, for instance, the complete TCP/IP headers of every packet sent. That's a metric crapload of data. If you download a movie, for instance - call it 6 Gb of data, it wouldn't be surprising for 1 Gb of that to be packet headers, which may have to be stored - or may not, but nobody will know for sure until a court rules on the subject, and it'd be a rash-to-the-point-of-reckless ISP that assumes it won't be required.