Quoting:

Date: Sun, 7 Apr 2013 09:31:22 +0200 (CEST) From: Mikael Abrahamsson <swmike@swm.pp.se> To: nanog list <nanog@nanog.org> Subject: Re: Verizon DSL moving to CGN

On Sun, 7 Apr 2013, Fabien Delmotte wrote:

...

CGN is just a solution to save time, it is not a transition mechanism through IPv6 At the end (IPv6 at home) you will need at list : Dual stack or NAT64/ DNS64

CGN doesn't stop anyone deploying dual stack. NAT64/DNS64 is dead in the water without other mechanisms (464XLAT or alike).

Defusing the "dead-in-the-water" phrase: An IPv4 solution with NAT64/DNS64 will still enable pure IPv6 SS devices without built-in NAT46 to still access the majority of the IPV4 world. (There are few IPV4-over-IPv6 technologies that can make a similar claim so thats already one step ahead of the competition on the IPv4 sunset path) XLAT464 (CLAT46+PLAT64) is now published as RFC6877. It is the most mature sunset technology - Is a single vendor offering out there that either does not already have a NAT64 function or doesn't have it in their roadmaps ? Greets Karl Pospisek from Melbourne AU.