RFC 9312: Manageability of the QUIC Transport Protocol

This document discusses manageability of the QUIC transport protocol and focuses on the implications of QUIC's design and wire image on network operations involving QUIC traffic. It is intended as a "user's manual" for the wire image to provide guidance for network operators and equipment vendors who rely on the use of transport-aware network functions.¶
This document is not an Internet Standards Track specification; it is published for informational purposes.¶
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are candidates for any level of Internet Standard; see Section 2 of RFC 7841.¶
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at https://www.rfc-editor.org/info/rfc9312.¶
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2. Features of the QUIC Wire Image
2.1. QUIC Packet Header Structure
2.2. Coalesced Packets
2.3. Use of Port Numbers
2.4. The QUIC Handshake
2.5. Integrity Protection of the Wire Image
2.6. Connection ID and Rebinding
2.8. Version Negotiation and Greasing
3. Network-Visible Information about QUIC Flows
3.1. Identifying QUIC Traffic
3.1.1. Identifying Negotiated Version
3.1.2. First Packet Identification for Garbage Rejection
3.2. Connection Confirmation
3.3. Distinguishing Acknowledgment Traffic
3.4. Server Name Indication (SNI)
3.4.1. Extracting Server Name Indication (SNI) Information
3.5. Flow Association
3.7. Flow Symmetry Measurement
3.8. Round-Trip Time (RTT) Measurement
3.8.1. Measuring Initial RTT
3.8.2. Using the Spin Bit for Passive RTT Measurement
4. Specific Network Management Tasks
4.1. Passive Network Performance Measurement and Troubleshooting
4.2. Stateful Treatment of QUIC Traffic
4.3. Address Rewriting to Ensure Routing Stability
4.4. Server Cooperation with Load Balancers
4.5. Filtering Behavior
4.6. UDP Blocking, Throttling, and NAT Binding
4.7. DDoS Detection and Mitigation
4.8. Quality of Service Handling and ECMP Routing
4.9. Handling ICMP Messages
4.10. Guiding Path MTU
5. IANA Considerations
6. Security Considerations