I'm trying to get a modified version of the l2fwd example running, and have problems with packets being silently thrown away. I can receive packets, and my printf's indicates that the packets are being sent to the correct port, using correct MAC address as source address. And still, the packets are lost.
Since the port is a virtual function, it seems like I cannot use tcpdump on it to see the network traffic. There is nothing coming out of the cable (activity light not flashing, the receiving end running tcpdump does not see any traffic). I'm using two X540 with two virtual functions each. The application runs in a KVM/Qemu environmen. Any suggestions how to debug this? Regards, Mats
