An Update to 6LoWPAN ND
draft-ietf-6lo-rfc6775-update-09

Document Type Active Internet-Draft (6lo WG)
Last updated 2017-09-20
Replaces draft-thubert-6lo-rfc6775-update
Stream IETF
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6lo                                                      P. Thubert, Ed.
Internet-Draft                                                     cisco
Updates: 6775 (if approved)                                  E. Nordmark
Intended status: Standards Track
Expires: March 24, 2018                                   S. Chakrabarti
                                                      September 20, 2017

                        An Update to 6LoWPAN ND
                    draft-ietf-6lo-rfc6775-update-09

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.

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   This Internet-Draft will expire on March 24, 2018.

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   Copyright (c) 2017 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
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Thubert, et al.          Expires March 24, 2018                 [Page 1]
Internet-Draft           An Update to 6LoWPAN ND          September 2017

   include Simplified BSD License text as described in Section 4.e of
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Applicability of Address Registration Options . . . . . . . .   3
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Updating RFC 6775 . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Extended Address Registration Option (EARO) . . . . . . .   7
     4.2.  Transaction ID  . . . . . . . . . . . . . . . . . . . . .   7
       4.2.1.  Comparing TID values  . . . . . . . . . . . . . . . .   8
     4.3.  Owner Unique ID . . . . . . . . . . . . . . . . . . . . .   9
     4.4.  Extended Duplicate Address Messages . . . . . . . . . . .  10
     4.5.  Registering the Target Address  . . . . . . . . . . . . .  10
     4.6.  Link-Local Addresses and Registration . . . . . . . . . .  11
     4.7.  Maintaining the Registration States . . . . . . . . . . .  13
   5.  Detecting Enhanced ARO Capability Support . . . . . . . . . .  14
   6.  Extended ND Options And Messages  . . . . . . . . . . . . . .  15
     6.1.  Enhanced Address Registration Option (EARO) . . . . . . .  15
     6.2.  Extended Duplicate Address Message Formats  . . . . . . .  18
     6.3.  New 6LoWPAN Capability Bits in the Capability Indication
           Option  . . . . . . . . . . . . . . . . . . . . . . . . .  19
   7.  Backward Compatibility  . . . . . . . . . . . . . . . . . . .  19
     7.1.  Discovering the capabilities of an ND peer  . . . . . . .  19
       7.1.1.  Using the "E" Flag in the 6CIO Option . . . . . . . .  19
       7.1.2.  Using the "T" Flag in the EARO  . . . . . . . . . . .  20
     7.2.  Legacy 6LoWPAN Node . . . . . . . . . . . . . . . . . . .  21
     7.3.  Legacy 6LoWPAN Router . . . . . . . . . . . . . . . . . .  21
     7.4.  Legacy 6LoWPAN Border Router  . . . . . . . . . . . . . .  22
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  22
   9.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  23
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  24
     10.1.  ARO Flags  . . . . . . . . . . . . . . . . . . . . . . .  24
     10.2.  ICMP Codes . . . . . . . . . . . . . . . . . . . . . . .  24
     10.3.  New ARO Status values  . . . . . . . . . . . . . . . . .  25
     10.4.  New 6LoWPAN capability Bits  . . . . . . . . . . . . . .  26
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