Providing Minimal-Sized Responses to DNS Queries with QTYPE=ANY
draft-ietf-dnsop-refuse-any-00
Network Working Group J. Abley
Internet-Draft Dyn, Inc.
Updates: 1035 (if approved) O. Gudmundsson
Intended status: Standards Track M. Majkowski
Expires: May 8, 2016 CloudFlare Inc.
November 5, 2015
Providing Minimal-Sized Responses to DNS Queries with QTYPE=ANY
draft-ietf-dnsop-refuse-any-00
Abstract
The Domain Name System (DNS) specifies a query type (QTYPE) "ANY".
The operator of an authoritative DNS server might choose not to
respond to such queries for reasons of local policy, motivated by
security, performance or other reasons.
The DNS specification does not include specific guidance for the
behaviour of DNS servers or clients in this situation. This document
aims to provide such guidance.
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 May 8, 2016.
Copyright Notice
Copyright (c) 2015 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
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
Abley, et al. Expires May 8, 2016 [Page 1]
Internet-Draft Minimal Responses for ANY Queries November 2015
carefully, as they describe your rights and restrictions with respect
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Table of Contents
1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Motivations . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. General Approach . . . . . . . . . . . . . . . . . . . . . . . 6
5. Behaviour of DNS Responders . . . . . . . . . . . . . . . . . 7
6. Behaviour of DNS Initiators . . . . . . . . . . . . . . . . . 8
7. HINFO Considerations . . . . . . . . . . . . . . . . . . . . . 9
8. Changes to RFC 1035 . . . . . . . . . . . . . . . . . . . . . 10
9. Security Considerations . . . . . . . . . . . . . . . . . . . 11
10. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
11. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 13
12. References . . . . . . . . . . . . . . . . . . . . . . . . . . 14
12.1. Normative References . . . . . . . . . . . . . . . . . . 14
12.2. Informative References . . . . . . . . . . . . . . . . . 14
Appendix A. Editorial Notes . . . . . . . . . . . . . . . . . . . 15
A.1. Venue . . . . . . . . . . . . . . . . . . . . . . . . . . 15
A.2. Change History . . . . . . . . . . . . . . . . . . . . . 15
A.2.1. draft-ietf-dnsop-refuse-any-00 . . . . . . . . . . . . 15
A.2.2. draft-jabley-dnsop-refuse-any-01 . . . . . . . . . . . 15
A.2.3. draft-jabley-dnsop-refuse-any-00 . . . . . . . . . . . 15
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 16
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1. Terminology
This document uses terminology specific to the Domain Name System
(DNS), descriptions of which can be found in
[I-D.ietf-dnsop-dns-terminology].
In this document, "ANY Query" refers to a DNS query with QTYPE=ANY.
An "ANY Response" is a response to such a query.
In an exchange of DNS messages between two hosts, this document
refers to the host sending a DNS request as the initiator, and the
host sending a DNS response as the responder.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY" and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119].
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