Temporary Address Extensions for Stateless Address Autoconfiguration in IPv6
draft-ietf-6man-rfc4941bis-11
| Document | Type | Active Internet-Draft (6man WG) | |
|---|---|---|---|
| Authors | Fernando Gont , Suresh Krishnan , Thomas Narten , Richard Draves | ||
| Last updated | 2020-10-22 (latest revision 2020-09-30) | ||
| Replaces | draft-fgont-6man-rfc4941bis | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | plain text pdf htmlized (tools) htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Ole Trøan | ||
| Shepherd write-up | Show (last changed 2020-06-04) | ||
| IESG | IESG state | IESG Evaluation::Revised I-D Needed | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Has a DISCUSS. Has enough positions to pass once DISCUSS positions are resolved. |
||
| Responsible AD | Erik Kline | ||
| Send notices to | =?utf-8?q?Ole_Tr=C3=B8an?= <otroan@employees.org> | ||
| IANA | IANA review state | IANA OK - No Actions Needed | |
IPv6 Maintenance (6man) Working Group F. Gont
Internet-Draft SI6 Networks
Obsoletes: 4941 (if approved) S. Krishnan
Intended status: Standards Track Kaloom
Expires: April 3, 2021 T. Narten
R. Draves
Microsoft Research
September 30, 2020
Temporary Address Extensions for Stateless Address Autoconfiguration in
IPv6
draft-ietf-6man-rfc4941bis-11
Abstract
This document describes an extension to IPv6 Stateless Address
Autoconfiguration that causes nodes to generate global scope
addresses with randomized interface identifiers that change over
time. Changing global scope addresses over time limits the window of
time during which eavesdroppers and other information collectors may
trivially perform address-based network activity correlation when the
same address is employed for multiple transactions by the same node.
Additionally, it reduces the window of exposure of a node via an
address that becomes revealed as a result of active communication.
This document obsoletes RFC4941.
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
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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 April 3, 2021.
Gont, et al. Expires April 3, 2021 [Page 1]
Internet-Draft Temporary Address Extensions to Autoconf September 2020
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Problem Statement . . . . . . . . . . . . . . . . . . . . 4
2. Background . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1. Extended Use of the Same Identifier . . . . . . . . . . . 4
2.2. Possible Approaches . . . . . . . . . . . . . . . . . . . 6
3. Protocol Description . . . . . . . . . . . . . . . . . . . . 6
3.1. Design Guidelines . . . . . . . . . . . . . . . . . . . . 7
3.2. Assumptions . . . . . . . . . . . . . . . . . . . . . . . 7
3.3. Generation of Randomized Interface Identifiers . . . . . 8
3.3.1. Simple Randomized Interface Identifiers . . . . . . . 8
3.3.2. Hash-based Generation of Randomized Interface
Identifiers . . . . . . . . . . . . . . . . . . . . . 9
3.4. Generating Temporary Addresses . . . . . . . . . . . . . 10
3.5. Expiration of Temporary Addresses . . . . . . . . . . . . 12
3.6. Regeneration of Temporary Addresses . . . . . . . . . . . 12
3.7. Implementation Considerations . . . . . . . . . . . . . . 14
3.8. Defined Constants and Configuration Variables . . . . . . 14
4. Implications of Changing Interface Identifiers . . . . . . . 15
5. Significant Changes from RFC4941 . . . . . . . . . . . . . . 16
6. Future Work . . . . . . . . . . . . . . . . . . . . . . . . . 17
7. Implementation Status . . . . . . . . . . . . . . . . . . . . 17
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
9. Security Considerations . . . . . . . . . . . . . . . . . . . 18
10. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 18
11. References . . . . . . . . . . . . . . . . . . . . . . . . . 19
11.1. Normative References . . . . . . . . . . . . . . . . . . 19
11.2. Informative References . . . . . . . . . . . . . . . . . 20
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