tcpdump -n -i eth2 host 10.1.6.21
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes
22:52:39.549816 IP 172.18.2.128.35365 > 10.1.6.21.21: S 4084198114:4084198114(0) win 5840 <mss 1460,sackOK,timestamp 3689807 0,nop,wscale 7>
22:52:42.547128 IP 172.18.2.128.35365 > 10.1.6.21.21: S 4084198114:4084198114(0) win 5840 <mss 1460,sackOK,timestamp 3690557 0,nop,wscale 7>
22:52:48.546999 IP 172.18.2.128.35365 > 10.1.6.21.21: S 4084198114:4084198114(0) win 5840 <mss 1460,sackOK,timestamp 3692057 0,nop,wscale 7>
22:53:00.546532 IP 172.18.2.128.35365 > 10.1.6.21.21: S 4084198114:4084198114(0) win 5840 <mss 1460,sackOK,timestamp 3695057 0,nop,wscale 7>