Internet Engineering Task Force (IETF)                         G. Huston
Request for Comments: 5736                                         APNIC
Category: Informational                                        M. Cotton
ISSN: 2070-1721                                                L. Vegoda
                                                            January 2010
               IANA IPv4 Special Purpose Address Registry



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.

このドキュメントはインターネットエンジニアリングタスクフォース(IETF)の製品です。これは、IETFコミュニティの総意を表しています。これは、公開レビューを受けており、インターネットエンジニアリング運営グループ(IESG)によって公表のために承認されています。 IESGによって承認されていないすべての文書がインターネットStandardのどんなレベルの候補です。 RFC 5741のセクション2を参照してください。

Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at


Copyright Notice


Copyright (c) 2010 IETF Trust and the persons identified as the document authors. All rights reserved.

著作権(C)2010 IETF信託とドキュメントの作成者として特定の人物。全著作権所有。

This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents ( 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.

この文書では、BCP 78と、この文書の発行日に有効なIETFドキュメント(に関連IETFトラストの法律の規定に従うものとします。彼らは、この文書に関してあなたの権利と制限を説明するように、慎重にこれらの文書を確認してください。コードコンポーネントは、トラスト法規定のセクションで説明4.eおよび簡体BSDライセンスで説明したように、保証なしで提供されているよう簡体BSDライセンスのテキストを含める必要があり、この文書から抽出されました。

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
1. はじめに

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 and any other address prefixes allocated to the registry in the future, as described in Section 3.


2. IANA IPv4 Special Purpose Address Block
2. IANAのIPv4特別目的アドレスブロック

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

[RFC5735]はIETFプロトコル割り当てのためのIANAにIPv4アドレスプレフィクスの割り当てを記録します。 - This block is reserved for IETF protocol assignments. - このブロックは、IETFプロトコルの割り当てのために予約されています。

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.)

4.3. [...]なお、[...](b)は、実験的割り当ては、ポリシーの問題であると見なされていない、と規定に従うままでなければならない、および(c)(例えばマルチキャストまたはエニーキャスト・ブロックのような)特殊なアドレスブロックの割り当てこのセクション4(このMOUの目的のために、用語「割り当て」が割り当てを含む。)の

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.

4.1. IANAは、提案、ドラフト、および完全なインターネット標準とベスト・プラクティス現在の文書を含めてのRFC、およびIANAの割り当てを要求し、他のRFCで指定された基準と手続きによって指示された場合にのみ、インターネットプロトコルパラメータを割り当てて、登録します。

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


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].

この文書では、これらのIANA-指定されたアドレスブロックの管理のためにIPv4の特別目的アドレスのレジストリを開くためにIANAに指示します。 [RFC2860]のセクション4.1に記載の規定によれば、IESG審査のRFCに記載されているように、このレジストリから作製される特別な目的の登録は、IETFプロトコルの割り当ておよびその他の特殊ケースのアドレスを含みます。

3. IANA Considerations
3. IANAの考慮事項

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


This recommendation concerns the management of the address pool used for IETF protocol assignments as documented in [RFC5735] -- namely, Following the policies outlined in [RFC5226], further assignments of address space to IANA for subsequent designation of address prefixes for the purposes listed here shall be undertaken only through an IETF Review action.

すなわち、 - [RFC5735]に記載されているように、この推奨は、IETFプロトコルの割り当てに使用されるアドレスプールの管理に関する。 [RFC5226]に概説された方針に続いて、ここに記載された目的のためにアドレスプレフィックスのその後の指定のためのIANAへのアドレス空間の更なる割り当てが唯一のIETFレビューの作用を介して行われなければなりません。

IANA may make Special Purpose address designations to support testing or experimental usage activities initiated by the IETF, or for specialised use of a designated address block in a context (e.g., anycast) associated with an Internet Standards Track protocol. All such address designations must be documented in the "IANA Considerations" section of an IESG-reviewed RFC.


The IANA IPv4 Special Purpose Address Registry records, for all current address designations undertaken by IANA:


1. The designated address prefix.
2. The RFC that called for the IANA address designation.
2. IANAのアドレス指定のために呼ばれるRFC。
3. The date the designation was made.

4. The date the use designation is to be terminated (if specified as a limited-use designation).


5. The nature of the purpose of the designated address (e.g., unicast experiment or protocol service anycast).


6. For experimental unicast applications and otherwise as appropriate, the registry will also identify the entity and related contact details to whom the address designation has been made.


7. The registry will also note, for each designation, the intended routing scope of the address, indicating whether the address is intended to be routable only in scoped, local, or private contexts, or whether the address prefix is intended to be routed globally.


8. The date in the IANA registry is the date of the IANA action, i.e., the day IANA records the allocation.

8. IANAレジストリ内の日付、すなわち、日IANAが割当を記録する、IANAのアクションの日付です。

The IANA registry notes, as a general comment, that address prefixes listed in the IPv4 Special Purpose Address Registry are not guaranteed routability in any particular local or global context.


IANA will not maintain further sub-registries for any IPv4 Special Purpose address block designated according to this direction.


4. Security Considerations

Security of the Internet's routing system relies on the ability to authenticate an assertion of unique control of an address block. Measures to authenticate such assertions rely on validation that the address block forms part of an existing allocated address block, and that there is a trustable and unique reference in the IANA address registries.


This registry is intended to provide an authoritative source of information regarding the currency and intended purpose of IPv4 Special Purpose address blocks that are designated from the IANA-administered IPv4 Special Purpose address pool. This is a small step towards the creation of a comprehensive registry framework that can be used as a trust point for commencing a chain of address validation. Consideration should be given to the use of file signatures and associated certificate mechanisms to allow applications to confirm that the registry contents are current, and that they have been published by the IANA.


5. Acknowledgements

This document is based on [RFC4773], which was prepared with the assistance of Leslie Daigle, Brian Haberman, Bob Hinden, David Kessens, Kurt Lindqvist, Thomas Narten, and Paul Wilson. While all these individuals were not explicitly consulted in the preparation of this document, their original contribution is acknowledged here.


6. Informative References

[IANA] IANA, "IANA Matrix for Protocol Parameter Assignment/ Registration Procedures", <>.

[IANA] IANA、 "IANAマトリックスプロトコルパラメータの割り当て/登録手順"、<>。

[RFC2860] Carpenter, B., Baker, F., and M. Roberts, "Memorandum of Understanding Concerning the Technical Work of the Internet Assigned Numbers Authority", RFC 2860, June 2000.

[RFC2860]大工、B.、ベイカー、F.、およびM.ロバーツ、RFC 2860、2000年6月「インターネット割り当て番号機関の技術的な仕事に関する覚書」。

[RFC4773] Huston, G., "Administration of the IANA Special Purpose IPv6 Address Block", RFC 4773, December 2006.

[RFC4773]ヒューストン、G.は、 "IANA特別目的の投与は、ブロックのIPv6アドレス"、RFC 4773、2006年12月。

[RFC5226] Narten, T. and H. Alvestrand, "Guidelines for Writing an IANA Considerations Section in RFCs", BCP 26, RFC 5226, May 2008.

[RFC5226] Narten氏、T.とH. Alvestrand、 "RFCsにIANA問題部に書くためのガイドライン"、BCP 26、RFC 5226、2008年5月。

[RFC5735] Cotton, M. and L. Vegoda, "Special Use IPv4 Addresses", BCP 153, RFC 5735, January 2010.

[RFC5735]コットン、M.およびL. Vegoda、 "特別の使用のIPv4アドレス"、BCP 153、RFC 5735、2010年1月。

Authors' Addresses


Geoff Huston Asia Pacific Network Information Centre PO Box 2131 Milton, QLD 4064 Australia

ジェフ・ヒューストンアジア太平洋ネットワークインフォメーションセンター私書箱2131ミルトン、QLD 4064オーストラリア

Phone: +61-7-3858-3100 EMail: URI:

電話:+ 61-7-3858-3100 Eメール URI:

Michelle Cotton Internet Corporation for Assigned Names and Numbers 4676 Admiralty Way, Suite 330 Marina del Rey, CA 90292-6601 USA

割り当てられた名前と番号4676アドミラルティ・ウェイ、スイート330マリナ・デル・レイ、CA 90292から6601 USAのためのミシェル・コットンインターネット株式会社

Phone: +1-310-823-9358 EMail: URI:

電話:+ 1-310-823-9358 Eメール URI:

Leo Vegoda Internet Corporation for Assigned Names and Numbers 4676 Admiralty Way, Suite 330 Marina del Rey, CA 90292-6601 USA

割り当てられた名前と番号4676アドミラルティ・ウェイ、スイート330マリナ・デル・レイ、CA 90292から6601 USAのためのレオVegodaインターネット株式会社

Phone: +1-310-823-9358 EMail: URI:

電話:+ 1-310-823-9358 Eメール URI: