3 PING6(56=40+8+8 bytes) ::1 --> ::1
4 1 packets transmitted, 1 packets received, 0.0% packet loss
5 2 ip:::send (args[2]: 6 16, args[5]: 6 0 16)
6 2 ip:::send (args[2]: 6 16, args[5]: 6 0 16)
7 3 ip:::receive (args[2]: 6 16, args[5]: 6 0 16)
8 3 ip:::receive (args[2]: 6 16, args[5]: 6 0 16)