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Guidelines for Multihomed and IPv4/IPv6 Dual-Stack Interactive Connectivity Establishment (ICE)
RFC 8421

Approval announcement
Draft of message to be sent after approval:


From: The IESG <>
To: "IETF-Announce" <>
Cc:,,,,, "The IESG" <>,, "Ari Keranen" <>
Subject: Protocol Action: 'ICE Multihomed and IPv4/IPv6 Dual Stack Guidelines' to Best Current Practice (draft-ietf-ice-dualstack-fairness-07.txt)

The IESG has approved the following document:
- 'ICE Multihomed and IPv4/IPv6 Dual Stack Guidelines'
  (draft-ietf-ice-dualstack-fairness-07.txt) as Best Current Practice

This document is the product of the Interactive Connectivity
Establishment Working Group.

The IESG contact persons are Alexey Melnikov, Ben Campbell and Alissa

A URL of this Internet Draft is:

Ballot Text

Technical Summary

  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 backwards compatible with the 
  original ICE specification. 

Working Group Summary

   The document has been worked both at MMUSIC and ICE working groups since IETF #86 and the document has 
   received multiple reviews over time. Overall the mechanism is simple but details of the suggested 
   algorithm were discussed and updated throughout the process. 

Document Quality

   General concerns on behaviour with unreliable tunnelling mechanisms were 
   raised but no specific issues were discovered and the draft was updated to note 
   this issue in general. The final version received four reviews. Reviews from 
   WGLC resulted only in editorial changes. There are two implementations of the 


   The document shepherd is Ari Keränen. The responsible Area 
   Director is Ben Campbell.

RFC Editor Note