Basic Support for IPv6 Networks Operating Outside the Context of a Basic Service Set over IEEE Std 802.11
RFC 8691
Internet Engineering Task Force (IETF) N. Benamar
Request for Comments: 8691 Moulay Ismail University of Meknes
Category: Standards Track J. Härri
ISSN: 2070-1721 EURECOM
J. Lee
Sangmyung University
T. Ernst
YoGoKo
December 2019
Basic Support for IPv6 Networks Operating Outside the Context of a Basic
Service Set over IEEE Std 802.11
Abstract
This document provides methods and settings for using IPv6 to
communicate among nodes within range of one another over a single
IEEE 802.11-OCB link. Support for these methods and settings require
minimal changes to existing stacks. This document also describes
limitations associated with using these methods. Optimizations and
usage of IPv6 over more complex scenarios are not covered in this
specification and are a subject for future work.
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 7841.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
https://www.rfc-editor.org/info/rfc8691.
Copyright Notice
Copyright (c) 2019 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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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction
2. Terminology
3. Communication Scenarios Where IEEE 802.11-OCB Links Are Used
4. IPv6 over 802.11-OCB
4.1. Maximum Transmission Unit (MTU)
4.2. Frame Format
4.3. Link-Local Addresses
4.4. Stateless Autoconfiguration
4.5. Address Mapping
4.5.1. Address Mapping -- Unicast
4.5.2. Address Mapping -- Multicast
4.6. Subnet Structure
5. Security Considerations
5.1. Privacy Considerations
5.1.1. Privacy Risks of Meaningful Information in Interface
IDs
5.2. MAC Address and Interface ID Generation
5.3. Pseudonymization Impact on Confidentiality and Trust
6. IANA Considerations
7. References
7.1. Normative References
7.2. Informative References
Appendix A. 802.11p
Appendix B. Aspects Introduced by OCB Mode to 802.11
Appendix C. Changes Needed on an 802.11a Software Driver to Become
an 802.11-OCB Driver
Appendix D. Protocol Layering
Appendix E. Design Considerations
Appendix F. IEEE 802.11 Messages Transmitted in OCB Mode
Appendix G. Examples of Packet Formats
G.1. Capture in Monitor Mode
G.2. Capture in Normal Mode
Appendix H. Extra Terminology
Appendix I. Neighbor Discovery (ND) Potential Issues in Wireless
Links
Acknowledgements
Contributors
Authors' Addresses
1. Introduction
This document provides a baseline for using IPv6 to communicate among
nodes in range of one another over a single IEEE 802.11-OCB link
[IEEE-802.11-2016] (a.k.a., 802.11p; see Appendices A, B, and C) with
minimal changes to existing stacks. Moreover, the document
identifies the limitations of such usage. Concretely, the document
describes the layering of IPv6 networking on top of the IEEE Std
802.11 MAC layer or an IEEE Std 802.3 MAC layer with a frame
translation underneath. The resulting stack is derived from IPv6
over Ethernet [RFC2464] but operates over 802.11-OCB to provide at
least P2P (point-to-point) connectivity using IPv6 Neighbor Discovery
(ND) and link-local addresses.
The IPv6 network layer operates on 802.11-OCB in the same manner as
operating on the Ethernet with the following exceptions:
* Exceptions due to the different operation of the IPv6 network
layer on 802.11 compared to the Ethernet. The operation of IP on
Ethernet is described in [RFC1042] and [RFC2464].
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