Network Working Group N. Matsuhira Internet-Draft Neptela Intended status: Informational 7 October 2024 Expires: 10 April 2025 Multiple IPv4 - IPv6 mapped IPv6 address (M46A) draft-matsuhira-m46a-17 Abstract This document specifies Multiple IPv4 - IPv6 mapped IPv6 address(M46A) spefification. M46A is an IPv4-mapped IPv6 address with a plane ID. Unique allocation of plane id value enables IPv4 private address unique in IPv6 address space. This address may use IPv4 over IPv6 encapsulation and IPv4 - IPv6 translation. 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 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 10 April 2025. Copyright Notice Copyright (c) 2024 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. Matsuhira Expires 10 April 2025 [Page 1] Internet-Draft M46A October 2024 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 Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. M46A architecture . . . . . . . . . . . . . . . . . . . . . . 2 3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 4. Security Considerations . . . . . . . . . . . . . . . . . . . 3 5. Normative References . . . . . . . . . . . . . . . . . . . . 3 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction This document specifies Multiple IPv4 - IPv6 mapped IPv6 address(M46A) spefification. M46A is an IPv4-mapped IPv6 address with a plane ID. Unique allocation of plane ID value enables IPv4 private address unique in IPv6 address space. This address may use IPv4 over IPv6 encapsulation such as Multiple IPv4 - IPv6 mapping encapsulation - fixed prefix (M46E-FP) M46E-FP [I-D.draft-matsuhira-m46e-fp], Multiple IPv4 - IPv6 mapping encapsulation - prefix resolution (M46E-PR)M46E-PR [I-D.draft-matsuhira-m46e-pr], Multiple IPv4 - IPv6 mapping encapsulation - prefix translator (M46E-PT)M46E-PT [I-D.draft-matsuhira-m46e-pt] and IPv4 - IPv6 translation such as Multiple IPv4 - IPv6 mapping translator (M46T)M46T [I-D.draft-matsuhira-m46t]. 2. M46A architecture Figure 1 shows M46A architecture. | 96 - m bits | m bits | 32 bits | +-----------------------+--------------------------+--------------+ | M46A prefix | IPv4 network plane ID | IPv4 address | +-----------------------+--------------------------+--------------+ Figure 1 M46A consists of three parts as follows. Matsuhira Expires 10 April 2025 [Page 2] Internet-Draft M46A October 2024 M46A prefix M46A prefix. This value is fixed value with M46E-FP, and non fixed value with M46E-PR. IPv4 network plane ID IPv4 network plane ID is the network identification of the IPv4 network plane. IPv4 address IPv4 address 3. IANA Considerations This document does not request IANA. Note to RFC Editor: this section may be removed on publication as an RFC. 4. Security Considerations 5. Normative References [I-D.draft-matsuhira-m46e-fp] Matsuhira, N., "Multiple IPv4 - IPv6 mapping encapsulation - fixed prefix", 1 June 2019. [I-D.draft-matsuhira-m46e-pr] Matsuhira, N., "Multiple IPv4 - IPv6 address mapping encapsulation - prefix resolution", 1 June 2019. [I-D.draft-matsuhira-m46e-pt] Matsuhira, N., "Multiple IPv4 - IPv6 mapping encapsulation - prefix translator", 1 June 2019. [I-D.draft-matsuhira-m46t] Matsuhira, N., "Multiple IPv4 - IPv6 mapping translator", 1 June 2019. [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997, . Author's Address Matsuhira Expires 10 April 2025 [Page 3] Internet-Draft M46A October 2024 Naoki Matsuhira Neptela Japan Email: matsuhira.ietf@gmail.com Matsuhira Expires 10 April 2025 [Page 4]