This object defines the destination MAC address used to match incoming traffic for QoS classification at a Service Access Point (SAP) ingress, allowing ingress traffic rules to be applied based on the Layer 2 destination address. By matching on specific destination MAC addresses, operators can apply different quality-of-service treatments to unicast, multicast, or broadcast traffic directed to specific devices. This granular matching enables QoS policies to treat traffic destined for particular endpoints (like servers or multicast groups) differently from other traffic.