CoAP fails to pair-verify on macOS

[Jc2k]

2022-09-21 09:00:19.497 WARNING (MainThread) [aiohomekit.controller.coap.connection] Pair verify failed
Traceback (most recent call last):
  File "/Users/john/Projects/home-assistant/venv/lib/python3.9/site-packages/aiohomekit/controller/coap/connection.py", line 386, in connect
    await self.do_pair_verify(pairing_data)
  File "/Users/john/Projects/home-assistant/venv/lib/python3.9/site-packages/aiohomekit/controller/coap/connection.py", line 334, in do_pair_verify
    coap_client = await Context.create_server_context(root, bind=("::", 0))
  File "/Users/john/Projects/home-assistant/venv/lib/python3.9/site-packages/aiocoap/protocol.py", line 255, in create_server_context
    await self._append_tokenmanaged_messagemanaged_transport(
  File "/Users/john/Projects/home-assistant/venv/lib/python3.9/site-packages/aiocoap/protocol.py", line 127, in _append_tokenmanaged_messagemanaged_transport
    transport = await message_interface_constructor(mman)
  File "/Users/john/Projects/home-assistant/venv/lib/python3.9/site-packages/aiocoap/transports/simplesocketserver.py", line 190, in create_server
    self._pool = await self._serversocket.create(bind, log, self._loop, self)
  File "/Users/john/Projects/home-assistant/venv/lib/python3.9/site-packages/aiocoap/transports/simplesocketserver.py", line 103, in create
    raise ValueError("The transport can not be bound to any-address.")
ValueError: The transport can not be bound to any-address.

You can force the backend with:

AIOCOAP_SERVER_TRANSPORT=udp6

Which seems to allow it to start.

[roysjosh]

With chrysn/aiocoap@54279e6 we can specify transports in the code

[Jc2k]

If it uses udp6 on Linux anyway, then we should do that and force udp6.