IPX ( AF_IPX )Edit
The IPX protocol is most commonly utilized in Novell NetWare(tm) local area network environments. Linux includes support for this protocol and may be configured to act as a network endpoint, or as a router for IPX.
Kernel Compile Options:
Networking options ---> [*] The IPX protocol [ ] Full internal IPX network
The IPX protocol and the NCPFS are covered in greater depth in the IPX-HOWTO.