Registration Extensions for 6LoWPAN Neighbor Discovery
draft-ietf-6lo-rfc6775-update-19

Document Type Active Internet-Draft (6lo WG)
Last updated 2018-04-23
Replaces draft-thubert-6lo-rfc6775-update
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state Submitted to IESG for Publication
Document shepherd Gabriel Montenegro
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Send notices to "Gabriel Montenegro" <Gabriel.Montenegro@microsoft.com>
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6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     Cisco
Updates: 6775 (if approved)                                  E. Nordmark
Intended status: Standards Track                                  Zededa
Expires: October 25, 2018                                 S. Chakrabarti
                                                                 Verizon
                                                              C. Perkins
                                                               Futurewei
                                                          April 23, 2018

         Registration Extensions for 6LoWPAN Neighbor Discovery
                    draft-ietf-6lo-rfc6775-update-19

Abstract

   This specification updates RFC 6775 - 6LoWPAN Neighbor Discovery, to
   clarify the role of the protocol as a registration technique,
   simplify the registration operation in 6LoWPAN routers, as well as to
   provide enhancements to the registration capabilities and mobility
   detection for different network topologies including the backbone
   routers performing proxy Neighbor Discovery in a low power network.

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 October 25, 2018.

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

Thubert, et al.         Expires October 25, 2018                [Page 1]
Internet-Draft   Registration Extensions for 6LoWPAN ND       April 2018

   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  BCP 14  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.2.  References  . . . . . . . . . . . . . . . . . . . . . . .   4
     2.3.  New Terms . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.4.  Subset of a 6LoWPAN Glossary  . . . . . . . . . . . . . .   6
   3.  Applicability of Address Registration Options . . . . . . . .   7
   4.  Extended ND Options and Messages  . . . . . . . . . . . . . .   8
     4.1.  Extended Address Registration Option (EARO) . . . . . . .   8
     4.2.  Extended Duplicate Address Message Formats  . . . . . . .  12
     4.3.  New 6LoWPAN Capability Bits in the Capability Indication
           Option  . . . . . . . . . . . . . . . . . . . . . . . . .  13
   5.  Updating RFC 6775 . . . . . . . . . . . . . . . . . . . . . .  14
     5.1.  Extending the Address Registration Option . . . . . . . .  15
     5.2.  Transaction ID  . . . . . . . . . . . . . . . . . . . . .  16
       5.2.1.  Comparing TID values  . . . . . . . . . . . . . . . .  16
     5.3.  Registration Ownership Verifier . . . . . . . . . . . . .  18
     5.4.  Extended Duplicate Address Messages . . . . . . . . . . .  19
     5.5.  Registering the Target Address  . . . . . . . . . . . . .  19
     5.6.  Link-Local Addresses and Registration . . . . . . . . . .  20
     5.7.  Maintaining the Registration States . . . . . . . . . . .  22
   6.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .  23
     6.1.  Signaling EARO Capability Support . . . . . . . . . . . .  24
     6.2.  RFC6775-only 6LoWPAN Node . . . . . . . . . . . . . . . .  24
     6.3.  RFC6775-only 6LoWPAN Router . . . . . . . . . . . . . . .  25
     6.4.  RFC6775-only 6LoWPAN Border Router  . . . . . . . . . . .  25
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  25
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  27
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  28
     9.1.  ARO Flags . . . . . . . . . . . . . . . . . . . . . . . .  28
     9.2.  ICMP Codes  . . . . . . . . . . . . . . . . . . . . . . .  28
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