-----Original Message----- From: Randy Bush [mailto:randy@psg.com] Sent: Wednesday, September 07, 2011 3:16 AM To: Leigh Porter Cc: North American Network Operators' Group Subject: Re: NAT444 or ?
I'm going to have to deploy NAT444 with dual-stack real soon now.
you may want to review the presentations from last week's apnic meeting in busan. real mesurements. sufficiently scary that people who were heavily pushing nat444 for the last two years suddenly started to say "it was not me who pushed nat444, it was him!" as if none of us had a memory.
Many of the problems are due to IPv4 address sharing, which will be problems for A+P, CGN, HTTP proxies, and other address sharing technologies. RFC6269 discusses most (or all) of those problems. There are workarounds to those problems, but most are not pretty. The solution is IPv6. -d