Gap Analysis for IPv4 Sunset
draft-liu-sunset4-gapanalysis-00

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Last updated 2018-10-22
Replaces draft-ietf-sunset4-gapanalysis
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Network Working Group                                             W. Liu
Internet-Draft                                                     W. Xu
Intended status: Informational                                   C. Zhou
Expires: April 21, 2019                            Huawei Technologies
                                                                 T. Tsou
                                                        Philips Lighting
                                                            S. Perreault
                                                     Jive Communications
                                                                                                                                  P. Fan
                                                                   R. Gu
                                                            China Mobile
                                                                   C. Li
                                                           China Telecom
                                                        October 22, 2018

                      Gap Analysis for IPv4 Sunset
                   draft-liu-sunset4-gapanalysis-00

Abstract

   Sunsetting IPv4 refers to the process of turning off IPv4
   definitively.  It can be seen as the final phase of the transition to
   IPv6.  This memo enumerates difficulties arising when sunsetting
   IPv4, and identifies the gaps requiring additional work.

Status of This Memo

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   This Internet-Draft will expire on April 21, 2019  .

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   Copyright (c) 2015 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of
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Liu, et al.             Expires April 21, 2019                  [Page 1]
Internet-Draft          Gap Analysis for IPv4 Sunset       October, 2018

   to this document.  Code Components extracted from this document must
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Related Work  . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Remotely Disabling IPv4 . . . . . . . . . . . . . . . . . . .   4
     3.1.  Indicating that IPv4 connectivity is unavailable  . . . .   4
     3.2.  Disabling IPv4 in the LAN . . . . . . . . . . . . . . . .   4
   4.  Client Connection Establishment Behavior  . . . . . . . . . .   5
   5.  Disabling IPv4 in Operating System and Applications . . . . .   5
   6.  On-Demand Provisioning of IPv4 Addresses  . . . . . . . . . .   6
   7.  IPv4 Address Literals . . . . . . . . . . . . . . . . . . . .   6
   8.  Managing Router Identifiers . . . . . . . . . . . . . . . . .   7
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   10. Security Considerations . . . . . . . . . . . . . . . . . . .   7
   11. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   12. Informative References  . . . . . . . . . . . . . . . . . . .   7
   Annex A.  Solution Ideas  . . . . . . . . . . . . . . . . . . . .   9
     A.1.  Remotely Disabling IPv4 . . . . . . . . . . . . . . . . .   9
       A.1.1.  Indicating that IPv4 connectivity is unavailable  . .   9
       A.1.2.  Disabling IPv4 in the LAN . . . . . . . . . . . . . .   9
     A.2.  Client Connection Establishment Behavior  . . . . . . . .  10
     A.3.  Disabling IPv4 in Operating System and Applications . . .  10
     A.4.  On-Demand Provisioning of IPv4 Address. . . . . . . . . .  10
     A.5.  Managing Router Identifiers . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   The final phase of the transition to IPv6 is the sunset of IPv4, that
   is turning off IPv4 definitively on the attached networks and on the
   upstream networks.

   Some current implementation behavior makes it hard to sunset IPv4.
   Additionally, some new features could be added to IPv4 to make its
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