q-pmtu-blackhole
· RFC 9000 §14, RFC 8899 · resilience · layer quic · udp/4469 · SHOULD
Passing this means: Recovered rather than giving up.
Anomaly type: transport
How each client answered
| Client | Version | Verdict | What happened |
|---|---|---|---|
| curl | ngtcp2/1.11.0 | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1293-byte path MTU (33 datagram(s) swallowed). |
| quinn | noq fork | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1293-byte path MTU (45 datagram(s) swallowed). |
| aioquic | 1.3.0 | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1293-byte path MTU (59 datagram(s) swallowed). |
| chromium | build 1223 | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1293-byte path MTU (73 datagram(s) swallowed). |
| quic-go | quic-go v0.61.0 | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1293-byte path MTU (87 datagram(s) swallowed). |
| quiche | 0.30.0 | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1275-byte path MTU (99 datagram(s) swallowed). |
| neqo | 0.31.1 | Pass | Recovered: detected the black hole 1 time(s) and settled on a 1293-byte path MTU (113 datagram(s) swallowed). |
What the clause requires
Detect the black hole, probe down to a working size, and keep the connection. Path-MTU discovery is driven past the limit on this port, so it engages on every connection.
Judged against RFC 9000, RFC 8899.
Run this one yourself
Every test is reachable from your own client. Nothing here needs an account.
curl -s https://conformance.pqcrypta.com/catalog.json \
| jq '.tests[] | select(.id == "q-pmtu-blackhole")'What this suite is · The full grid · All clients · All tests · Findings