Hi,
for the ixxat backend, all the errors, that may occur are just logged, including stuffing, ack and crc errors. These should be rare but can occur and should be handled.

This is an todo for the ixxat backend in the _recv_internal method.

Are there plans to update the implementation?
Should I try to fix this (this may involve a change in the return of the _recv_internal and adding some general exceptions to the can interface)?
I would change it to something like this, the method should return a message, None or raise an exception.

wait until timeout is over:
if message received:
return message
if ack, stuff, etc error:
raise exception
if timeout (in the interface):
pass