vypis tcpdump -i eth1 -vv
14:50:01.801570 IP (tos 0x28, ttl 50, id 50525, offset 0, flags [DF], proto TCP (6), length 64)
d.e.cz.27368 > a.b.cz.33390: Flags , cksum 0xcd54 (correct), seq 403223764, win 65535, options [mss 1452,nop,wscale 1,nop,nop,TS val 1552447400 ecr 0,sackOK,eol], length 0