xx.xx.xxx.0/29 ns 192.168.2.0/24
| +----------+ +------+ |
| | |192.168.2.254 | |192.168.2.1|
| | +epair1a---------+ ipfw +epair1b----+
| | | |(jail)| |
| | | +------+
|xx.xx.xxx.4| |192.168.1.254 :
+-----vtnet0+ ipfw_nat +epair0a--epair0b :
| | | :
| | | xxx 192.168.x.0/24
| | | +------+ |
| | |192.168.x.254 | |192.168.x.1|
| | +epairxa---------+ ipfw +epairxb----+
| | | |(jail)| |
| +----------+ +------+
|