Just for the record, I continue to object to / humbly disagree with Mssr. Ohta's position. While the case for "transparent NAT" may be valid, I believe IPv6 to also be a valid and valuable technology for the continued growth and expansion of the Internet. (Even eliding the amount of change required to implement "e2e NAT", and how this comes close to the amount of work (in many regards) as deploying IPv6, w/o all of the same capabilities.) And FWIW, I also continue to believe 'the world' agrees with IPv6 being 'the solution' ... Based not upon current traffic volumes (of course), but rather the number of deployments I know are happening now'ish (6 large carriers that I have personal experience with in North America ... Including a few of the largest 'residential ISPs' in the US. This reinforces my belief that not only is IPv6 in little to no danger of being deprecated, but that in fact the opposite is (yes, finally) happening. And not to mention (ahem) 'little content providers', like Google ... Or the US federal govt's re-invigorated push towards IPv6 ... ) /TJ Sent from my Verizon Wireless BlackBerry -----Original Message----- From: Masataka Ohta <mohta@xxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Thu, 24 Sep 2009 08:52:43 To: Olivier MJ Crepin-Leblond<ocl@xxxxxxx> Cc: 'IETF Discussion'<ietf@xxxxxxxx> Subject: Re: IPv6 standard? Olivier MJ Crepin-Leblond wrote: > Being some kind of IPv6 > "evangelist", I'll admit it, I do need to gain a feeling of points of > view from people who are in the know, and the range of replies in this > short thread has been interesting indeed. Given that IPv4 address space can be extended with port numbers still preserving the end to end transparency, why do you insist on IPv6? > With such problems being encountered with dual stack, would it make > sense to deprecating IPv4 standards ASAP in order to shorten the time > for use of dual stack and this shorten the likelyhood of consumers being > turned off IPv6? Not at all. Instead, deprecating IPv6 makes sense. Masataka Ohta _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf