Happy Eyeballs: Success with Dual-Stack Hosts
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]
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.
The canonical text of RFC 6555 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 6554 An IPv6 Routing Header for Source Routes with the Routing Protocol for Low-Power and Lossy Networks
- RFC 6556 Testing Eyeball Happiness
- RFC 6553 The Routing Protocol for Low-Power and Lossy Networks Option for Carrying RPL Information in Data-Plane Datagrams
- RFC 6557 Procedures for Maintaining the Time Zone Database
- RFC 6552 Objective Function Zero for the Routing Protocol for Low-Power and Lossy Networks
- RFC 6558 Sieve Extension for Converting Messages before Delivery
- RFC 6551 Routing Metrics Used for Path Calculation in Low-Power and Lossy Networks
- RFC 6559 A Reliable Transport Mechanism for PIM