host system /etc/rc.conf:
ifconfig_bge1="inet 192.168.255.2 netmask 255.255.255.0" \
defaultrouter="192.168.255.1"
ifconfig_bge0="inet 192.168.1.1 netmask 255.255.255.0"
hostname="golf.my.local"
pf_enable="YES"
pf_rules="/etc/pf.conf"
pflog_enable="YES"
pflog_logfile="/var/log/pflog"
gateway_enable="YES"
#sshd_enable="YES"
syslogd_flags="-ss"
dhcpd_enable="YES"
dhcpd_ifaces="bge0"
#named_enable="YES"
#named_flags="-u bind"
inetd_enable="NO"
#inetd_flags="-wW -C 60 -a 192.168.10.1"
rpcbind_enable="NO"
portmap_enable="NO"
cron_flags="$cron_flags -J 15"
sendmail_enable="NONE"
clear_tmp_enable="YES"
kern_securelevel_enable="YES"
kern_securelevel="1"
ezjail_enable="YES"
jail_interface="bge0"
jail_set_hostname_allow="YES"
jail_devfs_enable="YES"
jail_procfs_enable="YES"
jail_fdescfs_enable="YES"
jail_sysvipc_allow="YES"
jail_socket_unixiproute_only="YES"
jail_list="reverseproxy mail ns"
ifconfig_bge0_alias0="inet 192.168.1.22/32"
ifconfig_bge0_alias1="inet 192.168.1.20/32"
ifconfig_bge0_alias2="inet 192.168.1.21/32"
jail_nginx_rootdir="/usr/jails/reverseproxy"
jail_nginx_hostname="reverseproxy.my.local"
jail_nginx_ip="192.168.1.22"
jail_nginx_exec="/bin/sh /etc/rc"
#jail_ngnix_devfs_ruleset="devfsrules_jail"
jail_mail_rootdir="/usr/jails/mail"
jail_mail_hostname="mail.my.local"
jail_mail_ip="192.168.1.20"
jail_mail_exec="/bin/sh /etc/rc"
jail_ns_rootdir="/usr/jails/ns"
jail_ns_hostname="ns.my.local"
jail_ns_ip="192.168.1.21"
jail_ns_exec="/bin/sh /etc/rc"