For the "I'd bet that a small group of dedicated engineers could come up with an compatible extension to IPv4" I quote the [1]: "There is no such thing as an I

For the "I'd bet that a small group of dedicated engineers could come up with an compatible extension to IPv4" I quote the [1]: "There is no such thing as an IP protocol with extended addressing that is on-the-wire compatible with IPv4." [1]: http://www.gossamer-threads.com/lists/nsp/ipv6/25293 http://www.gossamer-threads.com/lists/nsp/ipv6/25293