Key update error

[flub]

from https://github.com/n0-computer/iroh/actions/runs/19462907038/job/55691146010?pr=3645

Error: connection lost (iroh/src/endpoint.rs:1508:53)
Caused by:
    key update error

[flub]

Log for posterity:
job-logs.txt

[matheus23]

Another case of this error appearing in failure logs: https://github.com/n0-computer/iroh/actions/runs/19466708552/job/55703339638?pr=3676

1717: 2025-11-18T12:48:51.016707Z WARN test_paths_watcher:connect{me=563757f531 alpn="test" remote=b371e8d4c1}:drive{id=1}: iroh_quinn_proto::connection: illegal packet: key update error

[Frando]

And another one: https://github.com/n0-computer/iroh/actions/runs/19467788767/job/55706881526?pr=3676