Last Call: <draft-cheshire-sudn-ipv4only-dot-arpa-15.txt> (Special Use Domain Name 'ipv4only.arpa') to Proposed Standard
The IESG <iesg-secretary@ietf.org> Mon, 20 January 2020 23:19 UTC
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From: The IESG <iesg-secretary@ietf.org>
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Subject: Last Call: <draft-cheshire-sudn-ipv4only-dot-arpa-15.txt> (Special Use Domain Name 'ipv4only.arpa') to Proposed Standard
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Date: Mon, 20 Jan 2020 15:19:50 -0800
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The IESG has received a request from an individual submitter to consider the following document: - 'Special Use Domain Name 'ipv4only.arpa'' <draft-cheshire-sudn-ipv4only-dot-arpa-15.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the last-call@ietf.org mailing lists by 2020-02-17. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract The specification for how a client discovers its local network's NAT64 prefix [RFC7050] defines the special name 'ipv4only.arpa' for this purpose, but in its Domain Name Reservation Considerations section that specification indicates that the name actually has no particularly special properties would require special handling, and does not request IANA to record the name in the Special-Use Domain Names registry. 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. As a result of this omission, in cases where software needs to give this name special treatment in order for it to work correctly, there was no clear mandate authorizing software authors to implement that special treatment. Software implementers were left with the choice between not implementing the special behavior necessary for the name queries to work correctly, or implementing the special behavior and being accused of being noncompliant with some RFC. This document describes the special treatment required, formally declares the special properties of the name, and adds similar declarations for the corresponding reverse mapping names. The file can be obtained via https://datatracker.ietf.org/doc/draft-cheshire-sudn-ipv4only-dot-arpa/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-cheshire-sudn-ipv4only-dot-arpa/ballot/ No IPR declarations have been submitted directly on this I-D.