An Extension Language for the DNS
draft-levine-dnsextlang-12

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Network Working Group                                          J. Levine
Internet-Draft                                      Taughannock Networks
Intended status: Standards Track                                P. Vixie
Expires: 14 April 2020                                   12 October 2019

                   An Extension Language for the DNS
                       draft-levine-dnsextlang-12

Abstract

   Adding new RRTYPEs to the DNS has required that DNS servers and
   provisioning software be upgraded to support each new RRTYPE in
   Master files.  This document defines a DNS extension language
   intended to allow most new RRTYPEs to be supported by adding entries
   to configuration data read by the DNS software, with no software
   changes needed for each RRTYPE.

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
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   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 14 April 2020.

Copyright Notice

   Copyright (c) 2019 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
   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.

Levine & Vixie            Expires 14 April 2020                 [Page 1]
Internet-Draft           DNS Extension Language             October 2019

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Typical usage . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Extension language syntax . . . . . . . . . . . . . . . . . .   4
     3.1.  Lexical structure . . . . . . . . . . . . . . . . . . . .   4
     3.2.  Storage in the DNS  . . . . . . . . . . . . . . . . . . .   5
       3.2.1.  Record type directory . . . . . . . . . . . . . . . .   5
     3.3.  Storage in a file . . . . . . . . . . . . . . . . . . . .   6
     3.4.  Stanza structure  . . . . . . . . . . . . . . . . . . . .   6
     3.5.  Field types . . . . . . . . . . . . . . . . . . . . . . .   7
       3.5.1.  Integer fields  . . . . . . . . . . . . . . . . . . .   7
       3.5.2.  IP address and partial address fields . . . . . . . .   8
       3.5.3.  Domain name fields  . . . . . . . . . . . . . . . . .   8
       3.5.4.  String fields . . . . . . . . . . . . . . . . . . . .   8
       3.5.5.  Base-32 and Base-64 fields  . . . . . . . . . . . . .   9
       3.5.6.  Hex fields  . . . . . . . . . . . . . . . . . . . . .   9
       3.5.7.  Time stamp fields . . . . . . . . . . . . . . . . . .   9
       3.5.8.  Miscellaneous fields  . . . . . . . . . . . . . . . .   9
   4.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Security considerations . . . . . . . . . . . . . . . . . . .  10
   6.  IANA considerations . . . . . . . . . . . . . . . . . . . . .  11
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     7.1.  References - Normative  . . . . . . . . . . . . . . . . .  12
     7.2.  References - Informative  . . . . . . . . . . . . . . . .  13
   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  14
     A.1.  Changes from -11 to -12 . . . . . . . . . . . . . . . . .  14
     A.2.  Changes from -10 to -11 . . . . . . . . . . . . . . . . .  14
     A.3.  Changes from -09 to -10 . . . . . . . . . . . . . . . . .  14
     A.4.  Changes from -08 to -09 . . . . . . . . . . . . . . . . .  14
     A.5.  Changes from -07 to -08 . . . . . . . . . . . . . . . . .  14
     A.6.  Changes from -06 to -07 . . . . . . . . . . . . . . . . .  14
     A.7.  Changes from -05 to -06 . . . . . . . . . . . . . . . . .  14
     A.8.  Changes from -04 to -05 . . . . . . . . . . . . . . . . .  15
     A.9.  Changes from -03 to -04 . . . . . . . . . . . . . . . . .  15
     A.10. Changes from -02 to -03 . . . . . . . . . . . . . . . . .  15
     A.11. Changes from -01 to -02 . . . . . . . . . . . . . . . . .  15
     A.12. Changes from -00 to -01 . . . . . . . . . . . . . . . . .  15
   Appendix B.  Descriptions of currently defined RRTYPEs  . . . . .  15