Data Link Provider Interface DLPI <networking> (DLPI) The interface that a {network driver} presents to the (higher level) {logical link layer} for driving the network at the {datagram} level in a {Unix} {STREAMS} environment and possibly elsewhere. DLPI corresponds to {ISO 8802}/2 ({LLC}) which covers both {connection-oriented} and {connectionless} {protocols}. [Is this correct? Better explanation?] (1996-01-29)