RFC 2766 (rfc2766) - Page 1 of 21

Network Address Translation - Protocol Translation (NAT-PT)

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Network Working Group                                         G. Tsirtsis
Request for Comments: 2766                                             BT
Category: Standards Track                                    P. Srisuresh
                                                    Campio Communications
                                                            February 2000


      Network Address Translation - Protocol Translation (NAT-PT)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2000).  All Rights Reserved.

Abstract

   This document specifies an IPv4-to-IPv6 transition mechanism, in
   addition to those already specified in [TRANS]. This solution
   attempts to provide transparent routing, as defined in [NAT-TERM], to
   end-nodes in V6 realm trying to communicate with end-nodes in V4
   realm and vice versa. This is achieved using a combination of Network
   Address Translation and Protocol Translation. The scheme described
   does not mandate dual-stacks (i.e., IPv4 as well as V6 protocol
   support) or special purpose routing requirements (such as requiring
   tunneling support) on end nodes. This scheme is based on a
   combination of address translation theme as described in [NAT-TERM]
   and V6/V4 protocol translation theme as described in [SIIT].

Acknowledgements

   Special thanks to Pedro Marques for reviewing an earlier version of
   this memo.  Also, many thanks to Alan O'Neill and Martin Tatham, as
   the mechanism described in this document was initially developed
   through discussions with them.










Tsirtsis & Srisuresh        Standards Track
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