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dIVI: Dual-Stateless IPv4/IPv6 Translation
draft-xli-behave-divi-06

Document type: Active Internet-Draft (individual)
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Last updated: 2014-01-03
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Network Working Group                                             C. Bao
Internet-Draft                                                     X. Li
Intended status: Informational                                   Y. Zhai
Expires: July 7, 2014                                           W. Shang
                                                  CERNET Center/Tsinghua
                                                              University
                                                         January 3, 2014

               dIVI: Dual-Stateless IPv4/IPv6 Translation
                        draft-xli-behave-divi-06

Abstract

   This document presents the concepts and the implementations of
   address-sharing dual-stateless IPv4/IPv6 translation (dIVI).

   The dIVI is an extension of 1:1 stateless IPv4/IPv6 translation with
   features of IPv4 address sharing and dual translation.  The major
   benefits of those extensions are using public IPv4 addresses more
   effectively and removing the requirements of DNS64 and ALG, without
   loosing the stateless, end-to-end address transparency and
   bidirectional-initiated communications.

Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on July 7, 2014.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents

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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Applicability  . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Terminologies  . . . . . . . . . . . . . . . . . . . . . . . .  4
   4.  Port Mapping Algorithm and Address Format Extension  . . . . .  5
     4.1.  Port Mapping Algorithm . . . . . . . . . . . . . . . . . .  5
     4.2.  Address Format Extensions  . . . . . . . . . . . . . . . .  6
     4.3.  Stateless Translation Algorithm with Address Sharing . . .  7
     4.4.  Partial-state Translation Algorithm with Address
           Sharing  . . . . . . . . . . . . . . . . . . . . . . . . .  7
   5.  Dual Stateless Translation . . . . . . . . . . . . . . . . . .  7
     5.1.  Header Translation and MTU Handling  . . . . . . . . . . .  8
     5.2.  Port Mapping Algorithm in CPE  . . . . . . . . . . . . . .  8
   6.  Implementation Considerations  . . . . . . . . . . . . . . . .  8
     6.1.  Host implementation  . . . . . . . . . . . . . . . . . . .  9
     6.2.  Port Mapping in the Core Translator  . . . . . . . . . . .  9
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . .  9
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . .  9
   9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . .  9
   10. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     10.1. Normative References . . . . . . . . . . . . . . . . . . . 10
     10.2. Informative References . . . . . . . . . . . . . . . . . . 10
   Appendix A.  Address Format and Workflow Examples  . . . . . . . . 11
     A.1.  The address-sharing host on an IPv6 network initiates
           communication  . . . . . . . . . . . . . . . . . . . . . . 12
     A.2.  A host in the IPv4 Internet initiates communication  . . . 12
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 12

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1.  Introduction

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