SLCAND Monitor Mode: No Frames from Lin Slave

[menschel]

Hello,

I recently tried to use your LUC on a raspberry pi running

sudo slcand -ol -s1 /dev/ttyACM0 lin0
sudo ip link set lin0 up
candump -td lin0

With this approach, no frame from the LIN slave is shown in candump, only the frames from LIN master.

On the other hand, using your uCCBViewer on a Windows machine with setting "Monitor Mode", it does show the frames from the LIN slave. However this setup is useless for me because I work on socketcan .

What is the difference that causes this behavior? Please advise.
Thank you.