Lightweight 4over6: An Extension to the Dual-Stack Lite Architecture (RFC7596)
Original Publication Date: 2015-Jul-01
Included in the Prior Art Database: 2015-Jul-31
Internet Society Requests For Comment (RFCs)
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:
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...