Gap Analysis for IPv4 Sunset
draft-ietf-sunset4-gapanalysis-08
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2017-06-26
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Network Working Group W. Liu
Internet-Draft W. Xu
Intended status: Informational C. Zhou
Expires: December 25, 2017 Huawei Technologies
T. Tsou
Philips Lighting
S. Perreault
Jive Communications
P. Fan
China Mobile
June 26, 2017
Gap Analysis for IPv4 Sunset
draft-ietf-sunset4-gapanalysis-08
Abstract
Sunsetting IPv4 refers to the process of turning off IPv4
definitively. It can be seen as the final phase of the migration to
IPv6. This memo enumerates difficulties arising when sunsetting
IPv4, and identifies the gaps requiring additional work.
Status of This Memo
This Internet-Draft is submitted 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
working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/.
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 December 25, 2017.
Copyright Notice
Copyright (c) 2015 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
(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
Liu, et al. Expires December 25, 2017 [Page 1]
Internet-Draft IPv4 Sunsetting Analysis June 2017
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 . . . . . . . . . . . . . . . . . . . . . . . . 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
Appendix 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. Managing Router Identifiers . . . . . . . . . . . . . . . 10
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 11
1. Introduction
The final phase of the migration 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
sunsetting easier. This document analyzes the current situation and
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