We’ll very soon have TWO separate internets: the Internet v2, accessible only to those users that have a pure end-to-end conectivity in IPV6, and the Internet v1 that will be fragmented very rapidly to to the impossibility to provide interoperability with IPv6-based Internet v2, but also with other parts of the IPv4-based Internet v1.
All that it means is that Internet v1 (on IPv4) will soon become a series of private islands. I can easily see these islands already forming in Asia, then in Europe in 2-3 years (about 2013-1014), then everywhere else (starting 2015).
The internet v1 is almost dead. Be prepared.
* It was part of a discussion on IPv4 to IPv6 transition tactics and indicated that IPv4 space was going to continue to be used up despite IPv6 being available and Turned-ON by ISP’s and such.