--- 1/draft-ietf-ipwave-ipv6-over-80211ocb-31.txt 2018-12-10 11:13:16.283618651 -0800 +++ 2/draft-ietf-ipwave-ipv6-over-80211ocb-32.txt 2018-12-10 11:13:16.363620559 -0800 @@ -1,26 +1,26 @@ IPWAVE Working Group A. Petrescu Internet-Draft CEA, LIST Intended status: Standards Track N. Benamar -Expires: May 23, 2019 Moulay Ismail University +Expires: June 13, 2019 Moulay Ismail University J. Haerri Eurecom J. Lee Sangmyung University T. Ernst YoGoKo - November 19, 2018 + December 10, 2018 Transmission of IPv6 Packets over IEEE 802.11 Networks operating in mode Outside the Context of a Basic Service Set (IPv6-over-80211-OCB) - draft-ietf-ipwave-ipv6-over-80211ocb-31 + draft-ietf-ipwave-ipv6-over-80211ocb-32 Abstract In order to transmit IPv6 packets on IEEE 802.11 networks running outside the context of a basic service set (OCB, earlier "802.11p") there is a need to define a few parameters such as the supported Maximum Transmission Unit size on the 802.11-OCB link, the header format preceding the IPv6 header, the Type value within it, and others. This document describes these parameters for IPv6 and IEEE 802.11-OCB networks; it portrays the layering of IPv6 on 802.11-OCB @@ -35,21 +35,21 @@ 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 https://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 May 23, 2019. + This Internet-Draft will expire on June 13, 2019. Copyright Notice Copyright (c) 2018 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 (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents @@ -78,29 +78,29 @@ 5. Security Considerations . . . . . . . . . . . . . . . . . . . 10 5.1. Privacy Considerations . . . . . . . . . . . . . . . . . 11 5.2. MAC Address and Interface ID Generation . . . . . . . . . 11 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12 7. Contributors . . . . . . . . . . . . . . . . . . . . . . . . 12 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 12 9. References . . . . . . . . . . . . . . . . . . . . . . . . . 13 9.1. Normative References . . . . . . . . . . . . . . . . . . 13 9.2. Informative References . . . . . . . . . . . . . . . . . 15 Appendix A. ChangeLog . . . . . . . . . . . . . . . . . . . . . 17 - Appendix B. 802.11p . . . . . . . . . . . . . . . . . . . . . . 26 + Appendix B. 802.11p . . . . . . . . . . . . . . . . . . . . . . 27 Appendix C. Aspects introduced by the OCB mode to 802.11 . . . . 27 Appendix D. Changes Needed on a software driver 802.11a to become a 802.11-OCB driver . . . 31 Appendix E. Protocol Layering . . . . . . . . . . . . . . . . . 32 Appendix F. Design Considerations . . . . . . . . . . . . . . . 33 Appendix G. IEEE 802.11 Messages Transmitted in OCB mode . . . . 33 - Appendix H. Examples of Packet Formats . . . . . . . . . . . . . 33 - H.1. Capture in Monitor Mode . . . . . . . . . . . . . . . . . 34 + Appendix H. Examples of Packet Formats . . . . . . . . . . . . . 34 + H.1. Capture in Monitor Mode . . . . . . . . . . . . . . . . . 35 H.2. Capture in Normal Mode . . . . . . . . . . . . . . . . . 37 Appendix I. Extra Terminology . . . . . . . . . . . . . . . . . 39 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 40 1. Introduction This document describes the transmission of IPv6 packets on IEEE Std 802.11-OCB networks [IEEE-802.11-2016] (a.k.a "802.11p" see Appendix B, Appendix C and Appendix D). This involves the layering of IPv6 networking on top of the IEEE 802.11 MAC layer, with an LLC @@ -422,25 +422,21 @@ Additionally, even if the timing requirements are not very strict (e.g. the moving subnet formed by two following vehicles is stable, a fixed IP-RSU is absent), the subnet is disconnected from the Internet (a default route is absent), and the addressing peers are equally qualified (impossible to determine that some vehicle owns and distributes addresses to others) the use of link-local addresses is RECOMMENDED. The Neighbor Discovery protocol (ND) [RFC4861] is used over - 802.11-OCB links. Due to lack of link-layer acknowledgements in - 802.11-OCB for both unicast and multicast, we can expect higher - unicast loss than for 802.11 BSS. The ND retransmissions are - supposed to handle loss of unicast and/or multicast just as it does - for other link types. + 802.11-OCB links. Protocols like Mobile IPv6 [RFC6275] and DNAv6 [RFC6059], which depend on timely movement detection, might need additional tuning work to handle the lack of link-layer notifications during handover. This is for further study. 5. Security Considerations Any security mechanism at the IP layer or above that may be carried out for the general case of IPv6 may also be carried out for IPv6 @@ -772,20 +768,23 @@ document freely available at URL http://standards.ieee.org/getieee802/ download/802.11p-2010.pdf retrieved on September 20th, 2013.". Appendix A. ChangeLog The changes are listed in reverse chronological order, most recent changes appearing at the top of the list. + -32: significantly shortened the relevant ND/OCB paragraph. It now + just states ND is used over OCB, w/o detailing. + -31: filled in the section titled "Pseudonym Handling"; removed a 'MAY NOT' phrase about possibility of having other prefix than the LL on the link between cars; shortened and improved the paragraph about Mobile IPv6, now with DNAv6; improved the ND text about ND retransmissions with relationship to packet loss; changed the title of an appendix from 'EPD' to 'Protocol Layering'; improved the 'Aspects introduced by OCB' appendix with a few phrases about the channel use and references. -30: a clarification on the reliability of ND over OCB and over