target   a.ns.example.net
   target-type=authoritative-dns
   short-desc="a.ns.example.net"

target   b.ns.example.net
   target-type=authoritative-dns
   short-desc="b.ns.example.net"

target  !!Aggregate_Total
	mtargets        = "a.ns.example.net; b.ns.example.net"
	mtargets-ops    = "sum()"
	unknown-is-zero = "true"
	short-desc="Aggregate Total of all DNS Servers"