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IETF RFC 9869
[ACTIVE]

Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options

Metadata

Publisher
IETF
Doc Type
Standard
Pages
13
Abstract
This document specifies how a UDP Options sender implements Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) as a robust method for Path MTU Discovery (PMTUD). 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 (MPS) supported by a path and to update this when required.
Publication Date
2025-10-01
Status Note
Proposed Standard
DOI
10.17487/RFC9869
Link
https://doi.org/10.17487/RFC9869
Author(s)
Gorry Fairhurst
Tom Jones
Keyword(s)
UDP Options, PMTUD, DPLPMTUD
Latest version of IETF RFC 9869

Document Versions — IETF RFC 9869

  • ▶ IETF RFC 9869 (2025-10-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

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IETF RFC 9869, Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options. Available at https://doi.org/10.17487/RFC9869
Snippet:
IETF RFC 9869, Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options. Available at https://doi.org/10.17487/RFC9869

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IETF RFC 9869, Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options. Available at https://doi.org/10.17487/RFC9869
Snippet:
<span class="citation"><cite>IETF RFC 9869</cite>, Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options. Available at <a href="https://doi.org/10.17487/RFC9869" target="_blank" rel="noopener">https://doi.org/10.17487/RFC9869</a></span>

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IETF RFC 9869, Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options
doi: 10.17487/RFC9869
url: https://doi.org/10.17487/RFC9869
Snippet:
<li>
<cite id="bib-rfc9869">IETF RFC 9869</cite>, Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options
<span class="doi">10.17487/RFC9869</span>
</li>

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