Domain Names, A Case for Clarifying
draft-lewis-domain-names-10

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Network Working Group                                           E. Lewis
Internet-Draft                                                     ICANN
Intended status: Informational                          February 1, 2018
Expires: August 5, 2018

                  Domain Names, A Case for Clarifying
                    draft-lewis-domain-names-10.txt

Abstract

   Is the concept of Domain Names owned by the DNS protocol or does the
   DNS protocol exist to support the Domain Names concept?  This
   question has become pertinent in light of proposals to use Domain
   Names in protocols in ways incompatible with the DNS protocol and the
   operational environment built to runthe protocol.  This document
   looks first at the early record in the RFC series and then expands to
   survey how Domain Names are used in protocols and reaches the
   conclusion that Domain Names are independent of the DNS, and further,
   that there might be a need to clarify the definition of Domain Names
   to reinforce that notion.

Status of This Memo

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   This Internet-Draft will expire on August 5, 2018.

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   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
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   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents

Lewis                    Expires August 5, 2018                 [Page 1]
Internet-Draft     Domain Names, A Case for Clarifying     February 2018

   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Goal  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Early RFCs  . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Emergence of Domain Names . . . . . . . . . . . . . . . . . .   6
     3.1.  The Term "Domain Name" Itself . . . . . . . . . . . . . .   6
     3.2.  The Term "Resolve"  . . . . . . . . . . . . . . . . . . .   8
   4.  Dialects, So To Speak, of Domain Names  . . . . . . . . . . .   9
     4.1.  Domain Names as Restricted for DNS  . . . . . . . . . . .   9
     4.2.  Host Names  . . . . . . . . . . . . . . . . . . . . . . .  10
     4.3.  URI Authority and Domain Names  . . . . . . . . . . . . .  11
     4.4.  Internet Protocol Address Literals  . . . . . . . . . . .  11
     4.5.  Internationalized Domain Names in Applications  . . . . .  11
     4.6.  Restricted for DNS Registration . . . . . . . . . . . . .  12
     4.7.  Tor Network Names . . . . . . . . . . . . . . . . . . . .  12
     4.8.  X.509 . . . . . . . . . . . . . . . . . . . . . . . . . .  12
     4.9.  Multicast DNS . . . . . . . . . . . . . . . . . . . . . .  12
     4.10. /etc/hosts  . . . . . . . . . . . . . . . . . . . . . . .  13
     4.11. Other Protocols . . . . . . . . . . . . . . . . . . . . .  13
     4.12. Other Others  . . . . . . . . . . . . . . . . . . . . . .  14
   5.  Interoperability Considerations . . . . . . . . . . . . . . .  14
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  15
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  15
   9.  Informational References  . . . . . . . . . . . . . . . . . .  15
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  20

1.  Introduction

   Which came first, the concept of Domain Names or the protocol called
   DNS?  This question is at the heart of whether or how Domain Names
   are put to use in ways avoiding the DNS protocol.

   The discussion leading to "The '.onion' Special-Use Domain Name"
   [RFC7686], a document designating "onion" as a top-level domain in
   the Special Use Domain Names registry (see "Special Use Domain Names"
   [RFC6761]), opened the question of how to treat Domain Names that
   were designed to be used external to the DNS.  The history of Domain
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