This object turns packet counting filtered by a specific source MAC address for this interface on or off. This is how an admin sets up a targeted packet count for one suspected source, such as a specific misbehaving node flooding the ring, without having to enable counting for every possible source address, keeping monitoring overhead limited to just the address under investigation. Setting this true while srpMACCountPktsBySourceAddress is set to a specific suspected node's MAC begins tracking exactly how many packets that one source is putting onto the ring.