I am trying to see if I get ping packets through one interface but tcpdump shows nothing. However, as soon as I stop it (Ctrl + C), all the packets appear and the summary looks good.
11:49:45.486887 IP 184.108.40.206 > 220.127.116.11: ICMP echo reply, id 13532, seq 1, length 64
And here the summary:
10 packets captured 10 packets received by filter 0 packets dropped by kernel
I normally see the traffic "live" but I don't understand why now it is hidden until I stop tcpdump. Can somebody point me to what might be happening?