Hi,
for hardware testing purposes, I would like to perform an external
loopback on my ethernet interface. For this, I wrote 2 little
executables, one sending a raw ethernet packet (using 'sendto') on a
socket opened with the parameters PF_PACKET, SOCK_RAW,
htons(ETH_P_ALL), the other one doing a recvfrom from a raw socket.
The problem is that on the reception side, I always receive what I send,
even when
the external RJ45 stub is not plugged !
Is there a way to tell to the kernel on the reception side that I want
to get only packets coming from the external world ?
Thanks,
Sebastien.
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