Linux LLC Stack Origins

The stack present on the Linux kernel was originally contributed by Procom Inc, that released a combined NetBEUI + LLC stack developed for Linux 2.0.36.

Alan Cox suggested that since Arnaldo Melo had time to work on things like IPX he should consider taking a stab at porting Procom's NetBEUI stack to 2.4, which he did, getting samba + netbeui + LLC + Linux mostly working.

Jay Schullist, the Linux-SNA project hacker also was working on another LLC stack but since Procom's was more well tested he switched to Procom's stack and contributed the initial BSD Sockets layer for the LLC protocol family, PF_LLC.