IPv6 ND PIO Flags IANA considerations
draft-troan-6man-ndpioiana-01

Versions: 00 01                                                         
Network Working Group                                           O. Troan
Internet-Draft                                             Cisco Systems
Updates: rfc4861 (if approved)                         September 7, 2017
Intended status: Standards Track
Expires: March 11, 2018


                 IPv6 ND PIO Flags IANA considerations
                     draft-troan-6man-ndpioiana-00

Abstract

   The Prefix Information Option in the IPv6 Neighbor Discovery Router
   Advertisement defines an 8-bit flag field with two flags defined and
   the remaining 6 bits reservered (Reserved1).  RFC 6275 has defined a
   new flag from this field without creating a IANA registry or updating
   RFC 4861.  The purpose of this document is to request IANA to create
   a new registry for the PIO flags to avoid potential conflict in the
   use of these flags.

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
   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 March 11, 2018.

Copyright Notice

   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
   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
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must



Troan                    Expires March 11, 2018                 [Page 1]


Internet-Draft                                            September 2017


   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Current Prefix Information Option flags . . . . . . . . . . .   2
   3.  Updates to RFC4861  . . . . . . . . . . . . . . . . . . . . .   3
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .   3
     5.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   The Prefix Information Option in the IPv6 Neighbor Discovery Router
   Advertisement defines an 8-bit flag field with two flags defined and
   the remaining 6 bits reservered (Reserved1).  RFC 6275 has defined a
   new flag from this field without creating a IANA registry or updating
   RFC 4861.  The purpose of this document is to request IANA to create
   a new registry for the PIO flags to avoid potential conflict in the
   use of these flags.

2.  Current Prefix Information Option flags

   Currently, the NDP Prefix Information Option contains the following
   one-bit flags defined in published RFCs:


                               0 1 2 3 4 5 6 7
                              +-+-+-+-+-+-+-+-+
                              |L|A|R|Reserved1|
                              +-+-+-+-+-+-+-+-+

                                 Figure 1

      L - On-link Flag [RFC4861]

      A - Autonomous Address Configuration Flag [RFC4861]

      R - Router Address Agent Flag [RFC6275]

      Reserved1 - Reserved






Troan                    Expires March 11, 2018                 [Page 2]


Internet-Draft                                            September 2017


3.  Updates to RFC4861

   This document updates RFC4861 with the new IANA Considerations
   section specified below.

4.  IANA Considerations

   The IANA is requested to create a new registry for IPv6 ND Prefix
   Information Option flags.  This should include the current flags in
   the PIO option.  The format for the registry is:



       +---------------+---------------------------------+-----------+
       | RA Option Bit | Description                     | Reference |
       +---------------+---------------------------------+-----------+
       | 0             | L - On-link Flag                | [RFC4861] |
       | 1             | A - Autonomous Address          | [RFC4861] |
       |               |     Configuration Flag          |           |
       | 2             | R - Router Address Flag         | [RFC6275] |
       +---------------+---------------------------------+-----------+


                                 Figure 2

   The assignment of new flags in the PIO option header require
   standards action or IESG approval.

   The registry for these flags should be added to:
   http://www.iana.org/assignments/icmpv6-parameters

5.  References

5.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

   [RFC4861]  Narten, T., Nordmark, E., Simpson, W., and H. Soliman,
              "Neighbor Discovery for IP version 6 (IPv6)", RFC 4861,
              DOI 10.17487/RFC4861, September 2007,
              <https://www.rfc-editor.org/info/rfc4861>.







Troan                    Expires March 11, 2018                 [Page 3]


Internet-Draft                                            September 2017


5.2.  Informative References

   [RFC6275]  Perkins, C., Ed., Johnson, D., and J. Arkko, "Mobility
              Support in IPv6", RFC 6275, DOI 10.17487/RFC6275, July
              2011, <https://www.rfc-editor.org/info/rfc6275>.

Author's Address

   Ole Troan
   Cisco Systems
   Philip Pedersens vei 1
   Lysaker  1366
   Norway

   Email: ot@cisco.com




































Troan                    Expires March 11, 2018                 [Page 4]