Protocol Action: 'Datagram PLPMTUD for UDP Options' to Proposed Standard (draft-ietf-tsvwg-udp-options-dplpmtud-15.txt)

The IESG <iesg-secretary@ietf.org> Thu, 20 March 2025 07:05 UTC

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From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Subject: Protocol Action: 'Datagram PLPMTUD for UDP Options' to Proposed Standard (draft-ietf-tsvwg-udp-options-dplpmtud-15.txt)
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Message-ID: <174245435541.994500.15376904736629636722@dt-datatracker-5b9b68c5b6-zxk6z>
Date: Thu, 20 Mar 2025 00:05:55 -0700
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CC: The IESG <iesg@ietf.org>, draft-ietf-tsvwg-udp-options-dplpmtud@ietf.org, gorry@erg.abdn.ac.uk, martenseemann@gmail.com, rfc-editor@rfc-editor.org, tsvwg-chairs@ietf.org, tsvwg@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/ietf-announce/Bjd_K6-413SwItr2BVq3Q8eoqHU>

The IESG has approved the following document:
- 'Datagram PLPMTUD for UDP Options'
(draft-ietf-tsvwg-udp-options-dplpmtud-15.txt) as Proposed Standard

This document is the product of the Transport and Services Working Group.

The IESG contact persons are Gorry Fairhurst and Mike Bishop.

A URL of this Internet-Draft is:
https://datatracker.ietf.org/doc/draft-ietf-tsvwg-udp-options-dplpmtud/

Technical Summary

This document specifies how a UDP Options sender implements Datagram
Packetization Layer Path Maximum Transmission Unit Discovery
(DPLPMTUD) as a robust method for Path Maximum Transmission Unit
discovery. This method uses the UDP Options packetization layer. It
allows an application to discover the largest size of datagram that
can be sent across a network path. It also provides a way to allow
the application to periodically verify the current maximum packet
size supported by a path and to update this when required.

Working Group Summary

Nothing worth report as there we no controversies in the WG.

Document Quality

An implementation in a fork of FreeBSD was reported at IETF 101, London with prototype support
using RES/REQ exchanges, which at the time were proposed within UDP options.
The wire format has not changed since. It was also implemented in a scapy,
which was used as a test suite during development
([https://github.com/adventureloop/network-tests/tree/master/udpoptions](https://github.com/adventureloop/network-tests/tree/master/udpoptions))

Personnel

The Document Shepherd for this document is Marten Seemann. The
Responsible Area Director is Zaheduzzaman Sarker.

Protocol Action: 'Datagram PLPMTUD for UDP Option… The IESG