[   77.806336][  T392] secure_seq: tcpv6 isn: 4074614022
[   92.401158][  T472] secure_seq: tcp isn: 1990346808
[  101.251023][  T504] secure_seq: tcpv6 isn: 1844538617
[  104.323644][  T504] packetdrill (504) used greatest stack depth: 24032 bytes left