Re: draft-arkko-ipv6-transition-guidelines WGLC

[Fred Baker <fred@cisco.com>]

On Aug 20, 2010, at 12:10 PM, Cameron Byrne wrote:

> IPv6-only host must emerge as the edge grows (mobile ..., M2M, ...)

I certainly agree with that. Understand that mobile handsets are already and increasingly both IPv4 and IPv6 capable. The issue is in the network, and it is in the applications that those handsets use. The applications like to call gethostbyname() instead of getaddrinfo(), and as a result are IPv4-aware instead of being network layer agnostic. That was Hui Deng's point in the two 3GPP/IETF joint workshops and in the pnat discussion in behave. This document grew out of a powerpoint presentation, pointed to as an informative reference, that I gave at the first of those workshops, and summarizes both that talk and Jari's experience using Ericsson's NAT64 solution at home.

If I were king, and note that I am not at this instant wearing my shiny working group chair crown, I'm wearing my dusty author's beret, gethostbyname would disappear and applications that use it would be given the option of complaining to /dev/null or fixing their code. At some point, maybe the 3G vendors could help us out there...