Special Use Domain Name 'ipv4only.arpa'

Metadata

Publisher: IETF
Doc Type: Standard
Pages: 17
Abstract: NAT64 (Network Address and Protocol Translation from IPv6 Clients to IPv4 Servers) allows client devices using IPv6 to communicate with servers that have only IPv4 connectivity. The specification for how a client discovers its local network's NAT64 prefix (RFC 7050) defines the special name 'ipv4only.arpa' for this purpose. However, in its Domain Name Reservation Considerations section (Section 8.1), that specification (RFC 7050) indicates that the name actually has no particularly special properties that would require special handling. Consequently, despite the well-articulated special purpose of the name, 'ipv4only.arpa' was not recorded in the Special-Use Domain Names registry as a name with special properties. This document updates RFC 7050. It describes the special treatment required and formally declares the special properties of the name. It also adds similar declarations for the corresponding reverse mapping names.
Publication Date: 2020-08-01
Status Note: Proposed Standard
DOI: 10.17487/RFC8880
Link: https://doi.org/10.17487/RFC8880
Author(s): Stuart Cheshire
David Schinazi
Keyword(s): IPv6, NAT64, DNS64

Latest version of IETF RFC 8880

Document Versions — IETF RFC 8880

▶ IETF RFC 8880 (2020-08-01)

THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

IETF RFC 2119 [Active*]
IETF RFC 3646 [Active*]
IETF RFC 6146 [Active*]
IETF RFC 6147 [Active*]
IETF RFC 6761 [Active*]
IETF RFC 7050 [Active*]
IETF RFC 8106 [Active*]
IETF RFC 8174 [Active*]

Bibliographic Reference(s)

Cloudflare, "1.1.1.1 - The free app that makes your Internet safer.", <https://1.1.1.1/>. EXTERNAL
IANA, "IANA IPv4 Special-Purpose Address Registry", <https://www.iana.org/assignments/iana-ipv4-special-registry/>. EXTERNAL
Google, "Google Public DNS", <https://developers.google.com/speed/public-dns/>. EXTERNAL
IANA, "Special-Use Domain Names", <https://www.iana.org/assignments/special-use-domain-names/>. EXTERNAL
Quad9, "Internet Security and Privacy In a Few Easy Steps", <https://quad9.net/>. EXTERNAL
IETF RFC 6303 [Active*]
RFC8244 — RFC8244 EXTERNAL
IETF RFC 8499 [Superseded*]

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IETF RFC 7050 [Active*]

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IETF RFC 8880, Special Use Domain Name 'ipv4only.arpa'. Available at https://doi.org/10.17487/RFC8880

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IETF RFC 8880, Special Use Domain Name &#x27;ipv4only.arpa&#x27;. Available at https://doi.org/10.17487/RFC8880

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IETF RFC 8880, Special Use Domain Name 'ipv4only.arpa'. Available at https://doi.org/10.17487/RFC8880

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<span class="citation"><cite>IETF RFC 8880</cite>, Special Use Domain Name &#x27;ipv4only.arpa&#x27;. Available at <a href="https://doi.org/10.17487/RFC8880" target="_blank" rel="noopener">https://doi.org/10.17487/RFC8880</a></span>

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IETF RFC 8880, Special Use Domain Name 'ipv4only.arpa'
doi: 10.17487/RFC8880
url: https://doi.org/10.17487/RFC8880

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<li>
<cite id="bib-rfc8880">IETF RFC 8880</cite>, Special Use Domain Name &#x27;ipv4only.arpa&#x27;
<span class="doi">10.17487/RFC8880</span>
</li>