RFC 1981 · DRAFT STANDARD · 1996
SUN · 14 JUN 2026
Path MTU Discovery for IP version 6
Overview
RFC 1981, “Path MTU Discovery for IP version 6”, is a Draft Standard document published in August 1996 by J. McCann, S. Deering, J. Mogul. It has been obsoleted by RFC 8201 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document describes Path MTU Discovery for IP version 6. It is largely derived from RFC 1191, which describes Path MTU Discovery for IP version 4. [STANDARDS-TRACK]
What “Draft Standard” means
A historical maturity level (retired in 2011) that sat between Proposed Standard and Internet Standard and required multiple interoperable implementations.
Read this RFC
The canonical text of RFC 1981 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1996
- RFC 1980 A Proposed Extension to HTML : Client-Side Image Maps
- RFC 1982 Serial Number Arithmetic
- RFC 1979 PPP Deflate Protocol
- RFC 1983 Internet Users' Glossary
- RFC 1978 PPP Predictor Compression Protocol
- RFC 1984 IAB and IESG Statement on Cryptographic Technology and the Internet
- RFC 1977 PPP BSD Compression Protocol
- RFC 1985 SMTP Service Extension for Remote Message Queue Starting