FreeBSDのjail設定

jail.conf

# common variables
$nic = "bge0";
exec.prestart += "ifconfig ${nic} inet ${ip4.addr} add";
exec.start = "/bin/sh /etc/rc";
exec.stop  = "/bin/sh /etc/rc.shutdown";
exec.poststop += "ifconfig ${nic} inet ${ip4.addr} -alias";
exec.clean;
mount.devfs;
#interface = bge0;
path = "/jail/$name";
host.hostname = $name;
# each jail
base {
  ip4.addr = 192.168.2.4;
  allow.chflags;
  allow.raw_sockets;
}