This reports whether this FCIP entity supports Per-Hop Behavior IP QoS marking, letting it tag its IP traffic with DiffServ markings that intermediate routers can use to prioritize FCIP traffic. This capability matters when FCIP traffic shares a WAN circuit with other IP traffic, since without PHB/QoS support the storage traffic cannot be given priority treatment during congestion, risking replication delays that could affect RPO commitments. A SAN extension deployment sharing a WAN link with regular data-center IP traffic would want this reporting true so FCIP frames can be marked for priority queuing ahead of bulk file transfers during congestion.