When the value is ALL_CLIENTS, LE_ARP_RESPONSE frames initiated or forwarded by the LES are sent to all clients on the Point-to-Multipoint Control Distribute VCC(s). When the value is ONE_CLIENT, LE_ARP_RESPONSE frames are sent solely to the client that originated the associated LE_ARP_REQUEST over the Control Direct VCC to that client. The primary advantage of sending LE_ARP_RESPONSE frames to all clients is that the clients are provided an opportunity to learn new {LAN Destination, ATM Address} mappings by 'eavesdropping' (secondary effects include lower LES processing requirements and less latency introduced by the LES). The potential disadvantage is that the benefits of eavesdropping, if it is even performed, may not compensate for the additional client overhead.