CoAP fails to remove pairing

[roysjosh]

2022-08-25 10:50:38.164 DEBUG (MainThread) [aiohomekit.controller.coap.connection] Read value for 239.24A iid 2565: value 1
2022-08-25 10:50:38.165 DEBUG (MainThread) [aiohomekit.protocol.tlv] sending [
  6 (State): (1 bytes/<class 'bytearray'>) 0x01
  0 (Method): (1 bytes/<class 'bytearray'>) 0x04
  1 (Identifier): (36 bytes/<class 'bytes'>) b'2b3111ef-b7bb-47be-b2f0-6cf47b5927d7'
]

2022-08-25 10:50:38.165 DEBUG (MainThread) [aiohomekit.protocol.tlv] sending [
  1 (Identifier): (44 bytes/<class 'bytearray'>) 0x060101000104012432623331313165662d623762622d343762652d623266302d366366343762353932376437
]

2022-08-25 10:50:38.165 DEBUG (MainThread) [aiohomekit.controller.coap.connection] ENCRYPT counter=7
2022-08-25 10:50:38.196 DEBUG (MainThread) [aiohomekit.controller.coap.connection] DECRYPT counter=7
2022-08-25 10:50:38.196 DEBUG (MainThread) [aiohomekit.controller.coap.pdu] Got PDU Control=0x02, TID=0x8d, Status=Success, Len=0

But the pairing remains active (sf is 0). And indeed the old pairing info still functions.

I saw this error a few seconds after the above although it isn't clear that it is related:

2022-08-25 10:52:06.416 WARNING (MainThread) [coap-server] An exception that is not an aiocoap Error was raised from a transport; please report this as a bug in aiocoap: AttributeError("'RecvmsgSelectorDatagramTransport' object has no attribute '_fatal_error'")
2022-08-25 10:52:06.419 ERROR (MainThread) [aiohomekit.utils] Failure running background task: Task-1665
Traceback (most recent call last):
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/util/asyncio/recvmsg.py", line 130, in sendmsg
    self.__sock.sendmsg((data,), ancdata, flags, address)
AttributeError: 'NoneType' object has no attribute 'sendmsg'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiohomekit/utils.py", line 29, in _handle_task_result
    task.result()
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiohomekit/controller/coap/pairing.py", line 168, in _process_config_changed
    await self.list_accessories_and_characteristics()
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiohomekit/controller/coap/pairing.py", line 148, in list_accessories_and_characteristics
    accessories = await self.connection.get_accessory_info()
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiohomekit/controller/coap/connection.py", line 404, in get_accessory_info
    _, body = await self.enc_ctx.post(OpCode.UNK_09_READ_GATT, 0x0000, b"")
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiohomekit/controller/coap/connection.py", line 183, in post
    res_pdu = await self.post_bytes(req_pdu)
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiohomekit/controller/coap/connection.py", line 167, in post_bytes
    response = await asyncio.wait_for(
  File "/usr/lib64/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/protocol.py", line 597, in _run_outer
    await cls._run(app_request, response, weak_observation, protocol, log)
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/protocol.py", line 656, in _run
    blockresponse = await blockrequest.response
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/tokenmanager.py", line 223, in request
    send_canceller = self.token_interface.send_message(msg, lambda: request.add_exception(error.MessageError))
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/messagemanager.py", line 422, in send_message
    self._send_initially(message, messageerror_monitor)
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/messagemanager.py", line 435, in _send_initially
    self._send_via_transport(message)
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/messagemanager.py", line 440, in _send_via_transport
    self.message_interface.send(message)
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/transports/udp6.py", line 360, in send
    self.transport.sendmsg(message.encode(), ancdata, 0, message.remote.sockaddr)
  File "/home/jroys/code/home-assistant/core/venv/lib64/python3.10/site-packages/aiocoap/util/asyncio/recvmsg.py", line 136, in sendmsg
    self._fatal_error(exc,
AttributeError: 'RecvmsgSelectorDatagramTransport' object has no attribute '_fatal_error'