Eu recebo isso quando faço ping em um IP:
21:31:50.136623 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 1, length 64
21:31:51.136138 IP SITE_IP > 173.194.33.4: ICMP echo request, id 14941, seq 2, length 64
21:31:52.136118...
13.09.2012 / 04:38