Alias Configuration
To configure a jail with the alias network mode, we simply make sure that the IP we assign is reachable within our local network, and the interface we assign is connected to our local network.
Attaching a jail to the bastille0 interface using an IP that
is reachable within our local network will cause the jail to not
have outbound access. This is becaue the jail IP will not be added
to the pf firewall table, and bastille0 is a loopback address
intended only for NAT jails.