[tomjen3]

It seems we need something that is difficult/expensive to create, but which does not permit anybody to trace the owner.

We either need something provided by the government that is unique to each recipient and services tuple (so it can't be used to trace anything), but will be the same each time, and so can be banned.

Else we need something like a proof of work, but that would either have to so expensive to create that we would have to reuse it across all the end points.

I guess we could also mandate ipv6, but then blocking the addresses wouldn't be very useful.

Finally I guess we could mandate that all IPs be treated equally and then companies that can't handle that would have to close down.