$  kasa

No host name given, trying discovery..
Discovering devices on 255.255.255.255 for 3 seconds
ERROR:asyncio:Exception in callback _DiscoverProtocol.connection_made(<_SelectorDat...e, bufsize=0>>)
handle: <Handle _DiscoverProtocol.connection_made(<_SelectorDat...e, bufsize=0>>)>
Traceback (most recent call last):
  File "/usr/lib/python3.8/asyncio/events.py", line 81, in _run
    self._context.run(self._callback, *self._args)
  File "/mnt/g/Code/kasa/venv/lib/python3.8/site-packages/kasa/discover.py", line 51, in connection_made
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  File "/usr/lib/python3.8/asyncio/trsock.py", line 82, in setsockopt
    self._sock.setsockopt(*args, **kwargs)
OSError: [Errno 22] Invalid argument

$ kasa discover

Discovering devices on 255.255.255.255 for 3 seconds
ERROR:asyncio:Exception in callback _DiscoverProtocol.connection_made(<_SelectorDat...e, bufsize=0>>)
handle: <Handle _DiscoverProtocol.connection_made(<_SelectorDat...e, bufsize=0>>)>
Traceback (most recent call last):
  File "/usr/lib/python3.8/asyncio/events.py", line 81, in _run
    self._context.run(self._callback, *self._args)
  File "/mnt/g/Code/kasa/venv/lib/python3.8/site-packages/kasa/discover.py", line 51, in connection_made
    sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
  File "/usr/lib/python3.8/asyncio/trsock.py", line 82, in setsockopt
    self._sock.setsockopt(*args, **kwargs)
OSError: [Errno 22] Invalid argument