On Saturday, March 31, 2012 06:44:38 AM Adam Tauno Williams wrote:
We've been running out of IPV4 address and needing to convert someday soon for the last 10 years..., but yet the vast majority of broadband providers and even most ISP's don't support it yet.
You've got another couple of months. I believe most U.S. network providers have agreed to a 'flag day' sometime in June 2012.
Internal networks / backbones at Comcast and Verizon have been IPv6 for some time now. At least that is what a credible little bird told me.
Well, since 100.64.0.0/10 got allocated for draft-weil, CGN and NAT444 will be a reality, and IPv4 gets a new lease on its fugue state. (see: http://www.ietf.org/mail-archive/web/ietf-announce/current/msg09959.html )
To Bob's question, IPv6 and IPv4 will coexist as dual-stack until nothing of importance is left on IPv4, and then it will be turned off by network ops, one AS at a time (iterate across ~30,000 AS's). It will likely take decades for IPv4 to go away; but I reserve the right to be wrong.