In the book we briefly touch on the issue of net neutrality; whether those running routers should be allowed to inspect the content of packets, rather than just the headers. This issue will rumble on for years, but the legality of so called deep-packet inspection, is being challenged in Europe. Virgin Media, which runs a big UK ISP, proposes to use CView to inspect packets.
More background on US and EU attitudes to net neutrality can be found here and here.