A New Internet-Draft is available from the on-line Internet-Drafts directories. Title : NAT444 Author(s) : Ikuhei Yamagata Yasuhiro Shirasaki Akira Nakagawa Jiro Yamaguchi Hiroyuki Ashida Filename : draft-shirasaki-nat444-05.txt Pages : 10 Date : 2012-01-05 This document describes one of the network models that are designed for smooth transition to IPv6. It is called NAT444 model. NAT444 model is composed of IPv6, and IPv4 with Carrier Grade (CGN). NAT444 is the only scheme not to require replacing Customer Premises Equipment (CPE) even if IPv4 address exhausted. But it must be noted that NAT444 has serious restrictions i.e. it limits the number of sessions per CPE so that rich applications such as AJAX and RSS feed cannot work well. Therefore, IPv6 which is free from such a difficulty has to be introduced into the network at the same time. In other words, NAT444 is just a tool to make IPv6 transition easy to be swallowed. It is designed for the days IPv4 and IPv6 co-existence. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-shirasaki-nat444-05.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ This Internet-Draft can be retrieved at: ftp://ftp.ietf.org/internet-drafts/draft-shirasaki-nat444-05.txt _______________________________________________ I-D-Announce mailing list I-D-Announce@ietf.org https://www.ietf.org/mailman/listinfo/i-d-announce Internet-Draft directories: http://www.ietf.org/shadow.html or ftp://ftp.ietf.org/ietf/1shadow-sites.txt