I know my issue isn't from python-can, and sorry for that. It's just I saw on the python-can documentation it's possible to use wireshark: https://python-can.readthedocs.org/en/latest/socketcan.html
I tried this example and it works correctly. But as soon as I put a j1939 filter + extended ID, it disappears. Any idea of the usage with wireshark?
There is nothing else on the network, I'm just creating a vcan0 interface and throwing some frames with nothing in front of it... Not sure the j1939 protocol accepts that.
Thank you in advance, cheers.