RFC 8201: Path MTU Discovery for IP version 6

This document describes Path MTU Discovery (PMTUD) for IP version 6. It is largely derived from RFC 1191, which describes Path MTU Discovery for IP version 4.…

Read RFC 8201 on the RFC Editor

Outgoing relationships (3 related RFCs)

Obsoletes — RFC 1981: Path MTU Discovery for IP version 6
Normative reference — RFC 4443: Internet Control Message Protocol (ICMPv6) for the Internet Protocol Version 6 (IPv6) Specification
Normative reference — RFC 8200: Internet Protocol, Version 6 (IPv6) Specification

Incoming relationships (26 related RFCs)

Normatively referenced by — RFC 9293: Transmission Control Protocol (TCP)
Normatively referenced by — RFC 8899: Packetization Layer Path MTU Discovery for Datagram Transports
Normatively referenced by — RFC 9260: Stream Control Transmission Protocol
Normatively referenced by — RFC 8926: Geneve: Generic Network Virtualization Encapsulation
Normatively referenced by — RFC 8900: IP Fragmentation Considered Fragile
Normatively referenced by — RFC 8929: IPv6 Backbone Router
Normatively referenced by — RFC 9040: TCP Control Block Interdependence
Normatively referenced by — RFC 8304: Transport Features of the User Datagram Protocol (UDP) and Lightweight UDP (UDP-Lite)
Normatively referenced by — RFC 9715: IP Fragmentation Avoidance in DNS over UDP
Normatively referenced by — RFC 9937: Proportional Rate Reduction (PRR)
Normatively referenced by — RFC 9268: IPv6 Minimum Path MTU Hop-by-Hop Option
Informatively referenced by — RFC 8200: Internet Protocol, Version 6 (IPv6) Specification
Informatively referenced by — RFC 9147: The Datagram Transport Layer Security (DTLS) Protocol Version 1.3
Informatively referenced by — RFC 8300: Network Service Header (NSH)
Informatively referenced by — RFC 8939: Deterministic Networking (DetNet) Data Plane: IP
Informatively referenced by — RFC 9300: The Locator/ID Separation Protocol (LISP)
Informatively referenced by — RFC 8931: IPv6 over Low-Power Wireless Personal Area Network (6LoWPAN) Selective Fragment Recovery
Informatively referenced by — RFC 8855: The Binary Floor Control Protocol (BFCP)
Informatively referenced by — RFC 8930: On Forwarding 6LoWPAN Fragments over a Multi-Hop IPv6 Network
Informatively referenced by — RFC 9347: Aggregation and Fragmentation Mode for Encapsulating Security Payload (ESP) and Its Use for IP Traffic Flow Security (IP-TFS)
Informatively referenced by — RFC 9868: Transport Options for UDP
Informatively referenced by — RFC 9869: Datagram Packetization Layer Path MTU Discovery (DPLPMTUD) for UDP Options
Informatively referenced by — RFC 9312: Manageability of the QUIC Transport Protocol
Informatively referenced by — RFC 9006: TCP Usage Guidance in the Internet of Things (IoT)
Informatively referenced by — RFC 9631: The IPv6 Compact Routing Header (CRH)
Informatively referenced by — RFC 10001: Operational Guidelines for DNS Transport in Mixed IPv4/IPv6 Environments