DNS Terminology
draft-ietf-dnsop-rfc8499bis-01

Document Type Active Internet-Draft (dnsop WG)
Authors Paul Hoffman  , Kazunori Fujiwara 
Last updated 2020-11-20
Stream IETF
Intended RFC status Best Current Practice
Formats plain text pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Yes
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                         P. Hoffman
Internet-Draft                                                     ICANN
Obsoletes: 8499 (if approved)                                K. Fujiwara
Updates: 2308 (if approved)                                         JPRS
Intended status: Best Current Practice                  20 November 2020
Expires: 24 May 2021

                            DNS Terminology
                    draft-ietf-dnsop-rfc8499bis-01

Abstract

   The Domain Name System (DNS) is defined in literally dozens of
   different RFCs.  The terminology used by implementers and developers
   of DNS protocols, and by operators of DNS systems, has sometimes
   changed in the decades since the DNS was first defined.  This
   document gives current definitions for many of the terms used in the
   DNS in a single document.

   This document obsoletes RFC 8499 and updates RFC 2308.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 24 May 2021.

Copyright Notice

   Copyright (c) 2020 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
   Provisions Relating to IETF Documents (https://trustee.ietf.org/
   license-info) in effect on the date of publication of this document.
   Please review these documents carefully, as they describe your rights

Hoffman & Fujiwara         Expires 24 May 2021                  [Page 1]
Internet-Draft               DNS Terminology               November 2020

   and restrictions with respect to this document.  Code Components
   extracted from this document must include Simplified BSD License text
   as described in Section 4.e of the Trust Legal Provisions and are
   provided without warranty as described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Names . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DNS Response Codes  . . . . . . . . . . . . . . . . . . . . .   9
   4.  DNS Transactions  . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Resource Records  . . . . . . . . . . . . . . . . . . . . . .  13
   6.  DNS Servers and Clients . . . . . . . . . . . . . . . . . . .  15
   7.  Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
   8.  Wildcards . . . . . . . . . . . . . . . . . . . . . . . . . .  27
   9.  Registration Model  . . . . . . . . . . . . . . . . . . . . .  28
   10. General DNSSEC  . . . . . . . . . . . . . . . . . . . . . . .  30
   11. DNSSEC States . . . . . . . . . . . . . . . . . . . . . . . .  35
   12. Security Considerations . . . . . . . . . . . . . . . . . . .  37
   13. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  37
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  37
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  37
     14.2.  Informative References . . . . . . . . . . . . . . . . .  40
   Appendix A.  Definitions Updated by This Document . . . . . . . .  45
   Appendix B.  Definitions First Defined in This Document . . . . .  45
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  47
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  54

1.  Introduction

   The Domain Name System (DNS) is a simple query-response protocol
   whose messages in both directions have the same format.  (Section 2
   gives a definition of "global DNS", which is often what people mean
   when they say "the DNS".)  The protocol and message format are
   defined in [RFC1034] and [RFC1035].  These RFCs defined some terms,
   and later documents defined others.  Some of the terms from [RFC1034]
   and [RFC1035] have somewhat different meanings now than they did in
   1987.

   This document contains a collection of a wide variety of DNS-related
   terms, organized loosely by topic.  Some of them have been precisely
   defined in earlier RFCs, some have been loosely defined in earlier
   RFCs, and some are not defined in an earlier RFC at all.

   Other organizations sometimes define DNS-related terms their own way.
   For example, the WHATWG defines "domain" at
   <https://url.spec.whatwg.org/>.  The Root Server System Advisory
   Committee (RSSAC) has a good lexicon [RSSAC026].
Show full document text