RFC 6555 · PROPOSED STANDARD · 2012

Happy Eyeballs: Success with Dual-Stack Hosts

Overview

RFC 6555, “Happy Eyeballs: Success with Dual-Stack Hosts”, is a Proposed Standard document published in April 2012 by D. Wing, A. Yourtchenko. It has been obsoleted by RFC 8305 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

When a server's IPv4 path and protocol are working, but the server's IPv6 path and protocol are not working, a dual-stack client application experiences significant connection delay compared to an IPv4-only client. This is undesirable because it causes the dual- stack client to have a worse user experience. This document specifies requirements for algorithms that reduce this user-visible delay and provides an algorithm. [STANDARDS-TRACK]

Abstract as published in the RFC, via rfc-editor.org.

What “Proposed Standard” means

An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.

Read this RFC

The canonical text of RFC 6555 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
Obsoleted by
RFC 8305
Other RFCs from 2012

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