IANA IPv4 Special Purpose Address Registry
RFC 5736

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Internet Engineering Task Force (IETF)                         G. Huston
Request for Comments: 5736                                         APNIC
Category: Informational                                        M. Cotton
ISSN: 2070-1721                                                L. Vegoda
                                                                   ICANN
                                                            January 2010

               IANA IPv4 Special Purpose Address Registry

Abstract

   This is a direction to IANA concerning the creation and management of
   the IANA IPv4 Special Purpose Address Registry.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are a candidate for any level of Internet
   Standard; see Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc5736.

Copyright Notice

   Copyright (c) 2010 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
   (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
   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.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . . 2
   2.  IANA IPv4 Special Purpose Address Block . . . . . . . . . . . . 2
   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 3
   4.  Security Considerations . . . . . . . . . . . . . . . . . . . . 4
   5.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . 4
   6.  Informative References  . . . . . . . . . . . . . . . . . . . . 5

1.  Introduction

   This is a direction to [IANA] concerning the creation and management
   of the IANA IPv4 Special Purpose Address Registry.  The registry will
   be used for recording IETF protocol assignments from 192.0.0.0/24 and
   any other address prefixes allocated to the registry in the future,
   as described in Section 3.

2.  IANA IPv4 Special Purpose Address Block

   [RFC5735] records the assignment of an IPv4 address prefix to IANA
   for IETF protocol assignments.

      192.0.0.0/24 - This block is reserved for IETF protocol
      assignments.

   This address allocation to IANA is intended to support IETF protocol
   assignments.  A more general view of the roles of IANA with respect
   to address allocation functions is documented in [RFC2860]:

      4.3. [...]  Note that [...] (b) assignments of specialised address
      blocks (such as multicast or anycast blocks), and (c) experimental
      assignments are not considered to be policy issues, and shall
      remain subject to the provisions of this Section 4.  (For purposes
      of this MOU, the term "assignments" includes allocations.)

   The reference to Section 4 here is to the general technical work for
   the IANA as described in [RFC2860]:

      4.1.  The IANA will assign and register Internet protocol
      parameters only as directed by the criteria and procedures
      specified in RFCs, including Proposed, Draft, and full Internet
      Standards and Best Current Practice documents, and any other RFC
      that calls for IANA assignment.

   This document directs IANA to designate special purpose address
   blocks in compliance with [RFC2860].

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RFC 5736                 IPv4 Special Registry              January 2010

   This document directs IANA to open an IPv4 Special Purpose Address
   Registry for the management of these IANA-designated address blocks.
   Special Purpose registrations to be made from this registry include
   addresses for IETF protocol assignments and other special purpose
   cases, as documented in IESG-reviewed RFCs, according to the
   provisions described in Section 4.1 of [RFC2860].

3.  IANA Considerations

   IANA maintains an "IANA IPv4 Special Purpose Address Registry".  The
   registry records current IANA address designations from the IANA-