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Datagram PLPMTUD for UDP Options

The information below is for an old version of the document.
Document Type
This is an older version of an Internet-Draft whose latest revision state is "Active".
Expired & archived
Authors Gorry Fairhurst , Tom Jones
Last updated 2024-01-04 (Latest revision 2023-07-03)
Replaces draft-fairhurst-tsvwg-udp-options-dplpmtud
RFC stream Internet Engineering Task Force (IETF)
Additional resources Mailing list discussion
Stream WG state WG Document
Revised I-D Needed - Issue raised by WGLC
Associated WG milestone
Dec 2023
Submit "Datagram PLPMTUD for UDP Options" for publication as a Proposed Standard RFC.
Document shepherd Marten Seemann
IESG IESG state Expired
Consensus boilerplate Yes
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


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 the 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.


Gorry Fairhurst
Tom Jones

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)