::1 is alive
1 ip:::send    (args[2]: 6 64, args[5]: 6 0 64)
1 ip:::send    (args[2]: 6 64, args[5]: 6 0 64)
2 ip:::receive (args[2]: 6 64, args[5]: 6 0 64)
2 ip:::receive (args[2]: 6 64, args[5]: 6 0 64)