This read-write boolean flag turns on packet rejection for one particular destination MAC address on the SRP ring, working together with srpMACRejectPktsByDestAddress which supplies that address. Unlike the source-based reject pair, this blocks traffic based on where it is headed rather than where it came from, which is useful for cutting off all ring traffic destined to a node being decommissioned or one that should no longer receive traffic for security reasons, regardless of who is sending it. An admin decommissioning a ring node at MAC 00:AA:BB:CC:DD:EE would set the paired destination-address object to that MAC and this flag to true so nothing more is forwarded toward it while it's being removed.