Specification of DNS over Dedicated QUIC Connections
draft-ietf-dprive-dnsoquic-01
Network Working Group C. Huitema
Internet-Draft Private Octopus Inc.
Intended status: Standards Track A. Mankin
Expires: April 23, 2021 Salesforce
S. Dickinson
Sinodun IT
October 20, 2020
Specification of DNS over Dedicated QUIC Connections
draft-ietf-dprive-dnsoquic-01
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
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provisions of BCP 78 and BCP 79.
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material or to cite them other than as "work in progress."
This Internet-Draft will expire on April 23, 2021.
Copyright Notice
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document authors. All rights reserved.
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Internet-Draft DNS over Dedicated QUIC October 2020
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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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