[  141.141087][  T717] secure_seq: tcpv6 isn: 883155133
[  154.671688][  T790] secure_seq: tcp isn: 454410772
[  162.491444][  T827] secure_seq: tcpv6 isn: 1609326923
[  163.074633][  T827] packetdrill (827) used greatest stack depth: 24016 bytes left