eth0 {
    prio (bands 10) {
	class { fifo (limit 1p); }
	rsvp (ipproto tcp) {
	  class { fifo (limit 2p); }
	  class on (dst 1.2.3.0) { fifo (limit 3p); }
	    tunnel (skip 5B) on (dst 1.2.3.1) {
		class on (dst 1.2.3.2);
		tunnel (skip 2B) on (dst 1.2.3.3) {
		    class on (dst 1.2.3.4);
		}
	    }
	    tunnel (skip 5B) on (dst 1.2.3.5) {
		class on (dst 1.2.3.6) { fifo; }
	    }
	}
    }
}
