Extended DNS Errors
draft-ietf-dnsop-extended-error-06

Document Type Active Internet-Draft (dnsop WG)
Last updated 2019-07-08
Replaces draft-wkumari-dnsop-extended-error
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Network Working Group                                          W. Kumari
Internet-Draft                                                    Google
Intended status: Standards Track                                 E. Hunt
Expires: January 9, 2020                                             ISC
                                                               R. Arends
                                                                   ICANN
                                                             W. Hardaker
                                                                 USC/ISI
                                                             D. Lawrence
                                                            Oracle + Dyn
                                                           July 08, 2019

                          Extended DNS Errors
                   draft-ietf-dnsop-extended-error-06

Abstract

   This document defines an extensible method to return additional
   information about the cause of DNS errors.  Though created primarily
   to extend SERVFAIL to provide additional information about the cause
   of DNS and DNSSEC failures, the Extended DNS Errors option defined in
   this document allows all response types to contain extended error
   information.

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 http://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 January 9, 2020.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Kumari, et al.           Expires January 9, 2020                [Page 1]
Internet-Draft       draft-ietf-dnsop-extended-error           July 2019

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

   1.  Introduction and background . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements notation . . . . . . . . . . . . . . . . . .   4
   2.  Extended Error EDNS0 option format  . . . . . . . . . . . . .   4
   3.  Use of the Extended DNS Error option  . . . . . . . . . . . .   5
     3.1.  The R (Retry) flag  . . . . . . . . . . . . . . . . . . .   5
     3.2.  The RESPONSE-CODE field . . . . . . . . . . . . . . . . .   5
     3.3.  The INFO-CODE field . . . . . . . . . . . . . . . . . . .   6
     3.4.  The EXTRA-TEXT field  . . . . . . . . . . . . . . . . . .   6
   4.  Defined Extended DNS Errors . . . . . . . . . . . . . . . . .   6
     4.1.  INFO-CODEs for use with RESPONSE-CODE: NOERROR(0) . . . .   6
       4.1.1.  NOERROR Extended DNS Error Code 1 - Unsupported
               DNSKEY Algorithm  . . . . . . . . . . . . . . . . . .   6
       4.1.2.  NOERROR Extended DNS Error Code 2 - Unsupported
               DS Algorithm  . . . . . . . . . . . . . . . . . . . .   6
       4.1.3.  INFO-CODEs for use with RESPONSE-CODE: NOERROR(3) . .   7
       4.1.4.  NOERROR Extended DNS Error Code 4 - Forged answer . .   7
       4.1.5.  SERVFAIL Extended DNS Error Code 5 - DNSSEC
               Indeterminate . . . . . . . . . . . . . . . . . . . .   7
     4.2.  INFO-CODEs for use with RESPONSE-CODE: SERVFAIL(2)  . . .   7
       4.2.1.  SERVFAIL Extended DNS Error Code 1 - DNSSEC Bogus . .   7
       4.2.2.  SERVFAIL Extended DNS Error Code 2 - Signature
               Expired . . . . . . . . . . . . . . . . . . . . . . .   7
       4.2.3.  SERVFAIL Extended DNS Error Code 3 - Signature Not
               Yet Valid . . . . . . . . . . . . . . . . . . . . . .   7
       4.2.4.  SERVFAIL Extended DNS Error Code 4 - DNSKEY missing .   7
       4.2.5.  SERVFAIL Extended DNS Error Code 5 - RRSIGs missing .   8
       4.2.6.  SERVFAIL Extended DNS Error Code 6 - No Zone Key Bit
               Set . . . . . . . . . . . . . . . . . . . . . . . . .   8
       4.2.7.  SERVFAIL Extended DNS Error Code 7 - No
               Reachable Authority . . . . . . . . . . . . . . . . .   8
       4.2.8.  SERVFAIL Extended DNS Error Code 8 - NSEC Missing . .   8
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