A_ADC_Response-PDU or A_SystemNetworkParameter_* not parsed correctly

[farmio]

Description of problem:
A_ADC_Response-PDU or A_SystemNetworkParameter_* not parsed correctly.

This was received via a tunnelling connection with an unrelated interface once when first installing a new KNX IP Secure Router to the system.
I failed to reproduce the exception after that. It probably resulted from a system broadcast message.

• using xknx standalone
• using Home-Assistant knx integration

Version information:

• xknx release with the issue: 1.0.0
• last working xknx / Home-Assistant release (if known):

Traceback (if applicable):

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/asyncio/events.py", line 80, in _run
    self._context.run(self._callback, *self._args)
  File "/usr/local/lib/python3.10/asyncio/selector_events.py", line 1027, in _read_ready
    self._protocol.datagram_received(data, addr)
  File "/usr/local/lib/python3.10/site-packages/xknx/io/transport/udp_transport.py", line 49, in datagram_received
    self.data_received_callback(data, addr)
  File "/usr/local/lib/python3.10/site-packages/xknx/io/transport/udp_transport.py", line 82, in data_received_callback
    knxipframe.from_knx(raw)
  File "/usr/local/lib/python3.10/site-packages/xknx/knxip/knxip.py", line 115, in from_knx
    self.init(self.header.service_type_ident).from_knx(
  File "/usr/local/lib/python3.10/site-packages/xknx/knxip/tunnelling_request.py", line 59, in from_knx
    pos += self.cemi.from_knx(raw[pos:])
  File "/usr/local/lib/python3.10/site-packages/xknx/knxip/cemi_frame.py", line 127, in from_knx
    return self.from_knx_data_link_layer(raw)
  File "/usr/local/lib/python3.10/site-packages/xknx/knxip/cemi_frame.py", line 187, in from_knx_data_link_layer
    self.payload.from_knx(apdu)
  File "/usr/local/lib/python3.10/site-packages/xknx/telegram/apci.py", line 472, in from_knx
    channel, self.count, self.value = struct.unpack("!BBH", raw[1:])
struct.error: unpack requires a buffer of 4 bytes

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Please make sure to update to the latest version of xknx (or Home Assistant) and check if that solves the issue. Let us know if that works for you by adding a comment 👍 This issue has now been marked as stale and will be closed if no further activity occurs. Thank you for your contributions.