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Lightweight 4over6: An Extension to the Dual-Stack Lite Architecture (RFC7596) Disclosure Number: IPCOM000242646D
Original Publication Date: 2015-Jul-01
Included in the Prior Art Database: 2015-Jul-31
Document File: 44 page(s) / 47K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Cui: AUTHOR [+5]


Dual-Stack Lite (DS-Lite) [RFC6333] defines a model for providing IPv4 access over an IPv6 network using two well-known technologies: IP in IP [RFC2473] and Network Address Translation (NAT). The DS-Lite architecture defines two major functional elements as follows:

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Internet Engineering Task Force (IETF)                            Y. Cui Request for Comments: 7596                           Tsinghua University Category: Standards Track                                         Q. Sun ISSN: 2070-1721                                            China Telecom                                                             M. Boucadair                                                           France Telecom                                                                  T. Tsou                                                      Huawei Technologies                                                                   Y. Lee                                                                  Comcast                                                                I. Farrer                                                      Deutsche Telekom AG                                                                July 2015

   Lightweight 4over6: An Extension to the Dual-Stack Lite Architecture


   Dual-Stack Lite (DS-Lite) (RFC 6333) describes an architecture for    transporting IPv4 packets over an IPv6 network.  This document    specifies an extension to DS-Lite called "Lightweight 4over6", which    moves the Network Address and Port Translation (NAPT) function from    the centralized DS-Lite tunnel concentrator to the tunnel client    located in the Customer Premises Equipment (CPE).  This removes the    requirement for a Carrier Grade NAT function in the tunnel    concentrator and reduces the amount of centralized state that must be    held to a per-subscriber level.  In order to delegate the NAPT    function and make IPv4 address sharing possible, port-restricted IPv4    addresses are allocated to the CPEs.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and ho...