Review queue

Open pull requests that are marked ready for review and have green CI, oldest first. Ordered by when each one first became reviewable — a PR that drops out and comes back keeps its place.

# Repo Pull request Author Waiting
1 xarxa #42 tcp: reject stale send-window advertisements cedrivard 43d
2 xarxa #40 tcp: defer FIN outside the receive window cedrivard 43d
3 xarxa #41 tcp: reject ACKs beyond transmitted sequence space cedrivard 43d
4 xarxa #49 waker: wake the previous task when register replaces it fengqiaoqu 7d