The Data Link Provider Interface (DLPI) Standard defines a STREAMS kernel-level instantiation of the ISO Data Link Service Definition DIS 8886 and Logical Link Control DIS 8802/2 (LLC). Where the two standards are not aligned, DIS 8886 prevails. The DLPI interface enables a data link service user to access and use any of a variety of conforming data link service providers without special knowledge of the provider's protocol. Specifically, the interface is intended to support X.25 LAPB, BX.25 level 2, SDL C, ISDN LAPD, Ethernet, CSMA/CD, FDDI, token ring, token bus, Bisync, Frame Relay, ATM, Fiber Channel and HIPPI. This list will be added to as new protocols are deployed.