> I tried to reproduce the issue in my setup with your above applications. > But surprisingly I couldn't reproduce the issue you are facing. > > One end is Raspberry Pi 4 with lan8651 MAC-PHY and the other end is > Raspberry Pi 4 with EVB-LAN8670-USB Stick. > > lan8651 MAC-PHY side: > --------------------- > Did you run both client and server on both ends? The previous tests I have done have only sent traffic in one direction, which did not lead to a live lock. But both sending and receiving as fast as possible in both directions trigger the problems on my end. R
