High CPU usage for dronecan_bridge

[Ryanf55]

Steps to reproduce

• python3 -m pip install dronecan
• Plug in a vimdrones CAN adapter
• Run dronecan_bridge.py can0 mcast:0

Expected behavior

With nothing connected, there is very little work to do

Actual behavior

dronecan_bridge eats 100% of a CPU core.

Versions

$ python3 -m pip list | grep dronecan
dronecan                             1.0.25
dronecan_gui_tool                    1.2.27

Logs

Connected to can0
Connected to mcast:0
Exception in thread d1->d2:
Traceback (most recent call last):
  File "/home/ryan/.local/bin/dronecan_bridge.py", line 45, in loop
    frame = self.d1.receive(timeout=0.1)
  File "/home/ryan/.local/lib/python3.10/site-packages/dronecan/driver/socketcan.py", line 286, in receive
    packet_raw, ancdata, _flags, _addr = self.socket.recvmsg(self.FDFRAME_SIZE,
OSError: [Errno 100] Network is down

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.10/threading.py", line 953, in run
    self._target(*self._args, **self._kwargs)
  File "/home/ryan/.local/bin/dronecan_bridge.py", line 46, in loop
    except dronecan.driver.common.TransferError:
AttributeError: module 'dronecan.driver.common' has no attribute 'TransferError'
0.000/0.000 pkts/sec
0.000/0.000 pkts/sec
0.000/0.000 pkts/sec
0.000/0.000 pkts/sec
0.000/0.000 pkts/sec
0.000/0.000 pkts/sec