CircuitPython 9.0.0-beta.1 will include this PR:

• Require explicit socket port reuse circuitpython#8940

This makes the semantics of socket reuse as it is in CPython. One would need to use socket.setsockopt(pool.SOL_SOCKET, pool.SO_REUSEADDR, 1) in the same cases one would use it in CPython.

HTTPServer maintainers: Is this a breaking change for use of adafruit_httpserver or for the examples? Thanks for looking.