patrick@dagobert:~$ sudo tcpdump -i eth2 |grep 10.0.0.1 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes 23:25:51.641512 arp who-has dagobert tell 10.0.0.1 23:25:51.641630 IP 10.0.0.1.45294 > dagobert.2222: S 4253030555:4253030555(0) win 5840 23:25:51.641786 IP dagobert.2222 > 10.0.0.1.45294: S 260701359:260701359(0) ack 4253030556 win 5792 23:25:51.641905 IP 10.0.0.1.45294 > dagobert.2222: . ack 1 win 183 23:25:51.659843 IP dagobert.2222 > 10.0.0.1.45294: P 1:39(38) ack 1 win 2896 23:25:51.659952 IP 10.0.0.1.45294 > dagobert.2222: . ack 39 win 183 23:25:51.660118 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:25:51.711982 IP 10.0.0.1.32777 > dagobert.domain: 49291+ PTR? 254.0.0.10.in-addr.arpa. (41) 23:25:51.871565 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:25:52.287259 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:25:53.127276 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:25:54.797471 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:25:56.697507 IP 10.0.0.1.32777 > dagobert.domain: 49291+ PTR? 254.0.0.10.in-addr.arpa. (41) 23:25:58.146217 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:26:01.709204 IP 10.0.0.1.32777 > dagobert.domain: 26135+ PTR? 254.0.0.10.in-addr.arpa. (41) 23:26:04.878949 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:26:06.679818 IP 10.0.0.1.32777 > dagobert.domain: 26135+ PTR? 254.0.0.10.in-addr.arpa. (41) 23:26:18.307370 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:26:45.161553 IP 10.0.0.1.45294 > dagobert.2222: P 1:39(38) ack 39 win 183 23:26:50.190039 arp who-has dagobert tell 10.0.0.1 23:27:25.115853 IP 10.0.0.1.45294 > dagobert.2222: FP 39:751(712) ack 39 win 183 797 packets captured 799 packets received by filter 0 packets dropped by kernel