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quiche — Version Negotiation offering a reserved version alongside v1

The client did what the clause requires.

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⟨ QUANTUM ERROR PORTAL ⟩

Navigate the Error Dimensions

Jump to an anomaly59

Every one of these is a page: what the server emits, the clause it is judged against, and how each client answered. The full list carries the verdict tallies too.

Pass

Responded correctly: sent Version Negotiation for 1 datagram(s); the client did not persist with an unsupported version.

The client did what the clause requires.

What was measured

Client
quiche — Cloudflare quiche, 0.30.0
Test
Version Negotiation offering a reserved version alongside v1q-version-negotiation
Clause
RFC 9000 §6 (MUST)
Class
correctness — Rejected something invalid, with the code the RFC names.
Required behaviour
Abandon the connection attempt, or retry with a version both ends support. §6.2 requires a client that supports only one version to abandon it rather than persist.
Measured
2026-09-18

Reproduce it

The suite is the judge, so the reproduction is to point the same client at the same test and let the server report what it saw.

SESSION=$(curl -sX POST https://conformance.pqcrypta.com/session | jq -r .id)
# then drive quiche at the test URL and read the verdict:
curl -s https://conformance.pqcrypta.com/report/$SESSION.json | jq '.results["q-version-negotiation"]'