Specification of DNS over Dedicated QUIC Connections
draft-ietf-dprive-dnsoquic-00

Document Type Active Internet-Draft (dprive WG)
Last updated 2020-04-27
Replaces draft-huitema-dprive-dnsoquic
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Network Working Group                                         C. Huitema
Internet-Draft                                      Private Octopus Inc.
Intended status: Standards Track                               A. Mankin
Expires: October 29, 2020                                     Salesforce
                                                            S. Dickinson
                                                              Sinodun IT
                                                          April 27, 2020

          Specification of DNS over Dedicated QUIC Connections
                     draft-ietf-dprive-dnsoquic-00

Abstract

   This document describes the use of QUIC to provide transport privacy
   for DNS.  The encryption provided by QUIC has similar properties to
   that provided by TLS, while QUIC transport eliminates the head-of-
   line blocking issues inherent with TCP and provides more efficient
   error corrections than UDP.  DNS over QUIC (DoQ) has privacy
   properties similar to DNS over TLS (DoT) specified in RFC7858, and
   latency characteristics similar to classic DNS over UDP.

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
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   This Internet-Draft will expire on October 29, 2020.

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

Huitema, et al.         Expires October 29, 2020                [Page 1]
Internet-Draft           DNS over Dedicated QUIC              April 2020

   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  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Key Words . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Design Considerations . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Scope is Limited to the Stub to Resolver Scenario . . . .   4
     3.2.  Provide DNS Privacy . . . . . . . . . . . . . . . . . . .   5
     3.3.  Design for Minimum Latency  . . . . . . . . . . . . . . .   5
     3.4.  No Specific Middlebox Bypass Mechanism  . . . . . . . . .   6
     3.5.  No Server Initiated Transactions  . . . . . . . . . . . .   6
   4.  Specifications  . . . . . . . . . . . . . . . . . . . . . . .   6
     4.1.  Connection Establishment  . . . . . . . . . . . . . . . .   7
       4.1.1.  Draft Version Identification  . . . . . . . . . . . .   7
       4.1.2.  Port Selection  . . . . . . . . . . . . . . . . . . .   7
     4.2.  Stream Mapping and Usage  . . . . . . . . . . . . . . . .   7
       4.2.1.  Transaction Errors  . . . . . . . . . . . . . . . . .   8
     4.3.  DoQ Error Codes . . . . . . . . . . . . . . . . . . . . .   8
     4.4.  Connection Management . . . . . . . . . . . . . . . . . .   9
     4.5.  Connection Resume and 0-RTT . . . . . . . . . . . . . . .   9
     4.6.  Message Sizes . . . . . . . . . . . . . . . . . . . . . .  10
   5.  Implementation Requirements . . . . . . . . . . . . . . . . .  10
     5.1.  Authentication  . . . . . . . . . . . . . . . . . . . . .  10
     5.2.  Fall Back to Other Protocols on Connection Failure  . . .  11
     5.3.  Address Validation  . . . . . . . . . . . . . . . . . . .  11
     5.4.  DNS Message IDs . . . . . . . . . . . . . . . . . . . . .  11
     5.5.  Padding . . . . . . . . . . . . . . . . . . . . . . . . .  11
     5.6.  Connection Handling . . . . . . . . . . . . . . . . . . .  12
       5.6.1.  Connection Reuse  . . . . . . . . . . . . . . . . . .  12
       5.6.2.  Resource Management and Idle Timeout Values . . . . .  12
     5.7.  Processing Queries in Parallel  . . . . . . . . . . . . .  13
     5.8.  Flow Control Mechanisms . . . . . . . . . . . . . . . . .  13
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  13
     7.1.  Privacy Issues With 0-RTT data  . . . . . . . . . . . . .  14
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