DNS Terminology
draft-ietf-dnsop-terminology-bis-10

Document Type Active Internet-Draft (dnsop WG)
Last updated 2018-06-25 (latest revision 2018-04-27)
Stream IETF
Intended RFC status Best Current Practice
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Document shepherd Suzanne Woolf
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Send notices to Suzanne Woolf <suzworldwide@gmail.com>
Network Working Group                                         P. Hoffman
Internet-Draft                                                     ICANN
Obsoletes: 7719 (if approved)                                A. Sullivan
Updates: 2308 (if approved)                                       Oracle
Intended status: Best Current Practice                       K. Fujiwara
Expires: October 29, 2018                                           JPRS
                                                          April 27, 2018

                            DNS Terminology
                  draft-ietf-dnsop-terminology-bis-10

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 will be the successor to RFC 7719, and thus will
   obsolete RFC 7719.  It will also update 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 October 29, 2018.

Copyright Notice

   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
   Provisions Relating to IETF Documents

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   (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 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  . . . . . . . . . . . . . . . . . . . . . .  12
   6.  DNS Servers and Clients . . . . . . . . . . . . . . . . . . .  14
   7.  Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
   8.  Wildcards . . . . . . . . . . . . . . . . . . . . . . . . . .  25
   9.  Registration Model  . . . . . . . . . . . . . . . . . . . . .  26
   10. General DNSSEC  . . . . . . . . . . . . . . . . . . . . . . .  28
   11. DNSSEC States . . . . . . . . . . . . . . . . . . . . . . . .  32
   12. Security Considerations . . . . . . . . . . . . . . . . . . .  34
   13. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  34
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  34
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  34
     14.2.  Informative References . . . . . . . . . . . . . . . . .  37
   Appendix A.  Definitions Updated by this Document . . . . . . . .  41
   Appendix B.  Definitions First Defined in this Document . . . . .  41
   Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  43
   Acknowledgements  . . . . . . . . . . . . . . . . . . . . . . . .  47
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  47

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 "public 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,
   but later documents defined others.  Some of the terms from [RFC1034]
   and [RFC1035] now have somewhat different meanings than they did in
   1987.

   This document collects a wide variety of DNS-related terms.  Some of
   them have been precisely defined in earlier RFCs, some have been
   loosely defined in earlier RFCs, and some are not defined in any
   earlier RFC at all.

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