Problem Statement: DNS Resolution of Aliased Names

Document Type Expired Internet-Draft (individual)
Authors Suzanne Woolf  , Jiankang Yao  , XiaoDong Lee 
Last updated 2010-10-25
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document attempts to describe a set of issues that arises from the desire to treat a set or group of names as "aliases" of each other, "bundled," "variants," or "the same," which is problematic in terms of corresponding behavior for DNS labels. With the emergence of internationalized domain names, among other potential use cases, two or more names that users will regard as having identical meaning will sometimes require corresponding behavior in the DNS. It's not clear how to accommodate these requirements for behavior of such names in DNS resolution; in particular, it's not clear when they are best accommodated in registry practices for generating names for lookup in the DNS, existing DNS protocol elements and behavior, or some set of protocol elements or behavior not yet defined. This document attempts to describe some of these cases and the behavior of some of the possible solutions discussed to date. NOTE: Even more than usual, version -02 of this document is a "work in progress". Additional updates may be expected between the date of this document and the DNSEXT meeting in Beijing, and can be found at


Suzanne Woolf (
Jiankang Yao (
XiaoDong Lee (

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