RFC 8421 · BEST CURRENT PRACTICE · 2018
MON · 14 SEP 2026
Guidelines for Multihomed and IPv4/IPv6 Dual-Stack Interactive Connectivity Establishment
Overview
RFC 8421, “Guidelines for Multihomed and IPv4/IPv6 Dual-Stack Interactive Connectivity Establishment”, is a Best Current Practice document published in July 2018 by P. Martinsen, T. Reddy, P. Patil. The canonical text is published by the RFC Editor.
Abstract
This document provides guidelines on how to make Interactive Connectivity Establishment (ICE) conclude faster in multihomed and IPv4/IPv6 dual-stack scenarios where broken paths exist. The provided guidelines are backward compatible with the original ICE specification (see RFC 5245).
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
Read this RFC
The canonical text of RFC 8421 is hosted at rfc-editor.org. Available in TXT,HTML.
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