```
$ `make test`
2_natout:1_simplemasq -> passed [0.003s]
2_natout:2_unregistered -> passed [0.003s]
2_natout:3_cgn -> passed [0.003s]
2_natout:4_udp -> passed [0.003s]
2_natout:5_sameport -> passed [0.003s]
2_natout:7_stress -> passed [11.192s]
```