Masataka Mawatari, Japan Internet Exchange Co.,Ltd.

This is a presentation about 464XLAT architecture (This is for providing IPv4 connectivity across IPv6 network by combining existing stateful protocol translation RFC 6146 in network and existing stateless protocol translation RFC 6145 at CPE) and introduction of 464XLAT experiences in Japan Internet Exchange (JPIX).

464XLAT architecture is suitable and reasonable for especially Asia-Pacific region, because it has uniqueness as below.

1. Minimal IPv4 resource requirements
2. No new protocols required
3. Cost-effective transition to IPv6

Most of ISPs in Asia-Pacific region do not have much IPv4 address block enough to assign for all end-users and time to create new protocol for sharing IPv4 address so I would like to introduce 464XLAT architecture and our experiences in this presentation for getting various feedbacks.

This 464XLAT architecture works today for service providers that areeager to deploy IPv6 because of IPv4 scarcity.

Randy Bush, IIJ

Go to v6, v4 life extension is ill-advised. Encapsulate if you must. Prefer stateless. NAT only if forced at the point of a gun.

Xing Li, CERNET