Effective rule sets in a jail?

[Grzegorz Junka]

I have the following in my jail.conf:

devfs_ruleset = 4;

vpn1 {
   ip4.addr = 10.70.5.254;
   ip4.addr += "tun0|10.70.5.1 10.70.5.254 mtu 1500 netmask 
255.255.255.255";
   interface = lagg0;
   devfs_ruleset = 5;
}

I expect that in the jail both rules 4 and 5 are active. How can I check 
that?

Grzegorz