Network-side Happy Eyeballs based on accurate IPv6 measurement

Document Type Replaced Internet-Draft (individual)
Last updated 2018-09-20
Replaced by draft-xie-v6ops-network-happyeyeballs
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Intended RFC status (None)
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IESG IESG state Replaced by draft-xie-v6ops-network-happyeyeballs
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


During the period of IPv6 transition, both ISP and ICP (Internet Content Provider) care about user's experience in dual-stack network. They hesitate to provide IPv6 to their users due to the fear of poor IPv6 performance. Network-based Happy Eyeballs (NHE) is proposed in this memo as a approach to provide better connectivity to end users by doing accurate measurement and comparison on IPv6/IPv4 performance on the network side other than client-side Happy Eyeballs (HE) ([RFC8305]). It works independently with client's adoption of HE. REMOVE BEFORE PUBLICATION: The source of the document with test script is currently placed at GitHub [NHE-GitHub]. Comments and pull request are welcome.


Chongfeng Xie (
Linjian Song (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)