Updates to the IPv6 Multicast Addressing Architecture
draft-ietf-6man-multicast-addr-arch-update-06

The information below is for an old version of the document
Document Type Active Internet-Draft (6man WG)
Authors Mohamed Boucadair  , Stig Venaas 
Last updated 2014-07-04
Replaces draft-boucadair-6man-multicast-addr-arch-update
Stream IETF
Intended RFC status Proposed Standard
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Document shepherd Ole Trøan
Shepherd write-up Show (last changed 2014-06-02)
IESG IESG state Waiting for Writeup
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Responsible AD Brian Haberman
Send notices to 6man-chairs@tools.ietf.org, draft-ietf-6man-multicast-addr-arch-update@tools.ietf.org
IANA IANA review state Version Changed - Review Needed
6man Working Group                                          M. Boucadair
Internet-Draft                                            France Telecom
Updates: 3306,3956,4291 (if approved)                          S. Venaas
Intended status: Standards Track                                   Cisco
Expires: January 5, 2015                                   July 04, 2014

         Updates to the IPv6 Multicast Addressing Architecture
             draft-ietf-6man-multicast-addr-arch-update-06

Abstract

   This document updates the IPv6 multicast addressing architecture by
   re-defining the reserved bits as generic flag bits.  The document
   provides also some clarifications related to the use of these flag
   bits.

   This document updates RFC 3956, RFC 3306 and RFC 4291.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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 http://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 January 5, 2015.

Copyright Notice

   Copyright (c) 2014 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Boucadair & Venaas       Expires January 5, 2015                [Page 1]
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   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://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
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Addressing Architecture Update  . . . . . . . . . . . . . . .   3
   3.  Flag Bits: A Recommendation . . . . . . . . . . . . . . . . .   3
   4.  RFC Updates . . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  RFC 3306  . . . . . . . . . . . . . . . . . . . . . . . .   4
       4.1.1.  Update #1 . . . . . . . . . . . . . . . . . . . . . .   4
       4.1.2.  Update #2 . . . . . . . . . . . . . . . . . . . . . .   5
     4.2.  RFC 3956  . . . . . . . . . . . . . . . . . . . . . . . .   6
       4.2.1.  Update #1 . . . . . . . . . . . . . . . . . . . . . .   6
       4.2.2.  Update #2 . . . . . . . . . . . . . . . . . . . . . .   6
       4.2.3.  Update #3 . . . . . . . . . . . . . . . . . . . . . .   8
       4.2.4.  Update #4 . . . . . . . . . . . . . . . . . . . . . .   8
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   9
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   9
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   9
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   This document updates the IPv6 addressing architecture [RFC4291] by
   re-defining reserved bits as generic flag bits (Section 2).  The
   document provides also some clarifications related to the use of
   these flag bits (Section 3).

   This document updates [RFC3956], [RFC3306], and [RFC4291].  These
   updates are logical consequences of the recommendation on the flag
   bits (Section 3).

   Textual representation of IPv6 addresses included in the RFC updates
   follows the recommendation in [RFC5952].

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2.  Addressing Architecture Update

   Bits 17-20 of a multicast address, where bit 1 is the most
   significant bit, are defined in [RFC3956] and [RFC3306] as reserved
   bits.  This document defines these bits as generic flag bits so that
   they apply to any multicast address.  These bits are referred to as
   ff2 (flag field 2) while the flgs bits in [RFC4291][RFC3956] are
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