root@thunderx2.nyi:/home/sbruno # cat /var/run/jail.ref13-aarch64.conf 
# Generated by rc.d/jail at 2020-03-26 16:37:25
ref13-aarch64 {
        host.hostname = "ref13-aarch64.freebsd.org";
        path = "/j/jails/ref13-aarch64";
        interface = "vnic2";
        ip4.addr += "lo1|127.0.1.150/32";
        ip4.addr += "vnic2|96.47.72.150/32";
        ip6.addr += "vnic2|2610:1c1:1:6074::16:96/128";
        exec.start += "sleep  2 ";
        allow.raw_sockets = 0;
        exec.clean;
        exec.system_user = "root";
        exec.jail_user = "root";
        exec.start += "/bin/sh /etc/rc";
        exec.stop = "/bin/sh /etc/rc.shutdown jail";
        exec.consolelog = "/var/log/jail_ref13-aarch64_console.log";
        mount.devfs;
        mount.fdescfs;
        allow.set_hostname = 0;
        allow.sysvipc = 0;
        enforce_statfs = "2";
        enforce_statfs=1;
        osrelease=13.0-CURRENT;
        osreldate=1300084;
}