http://www.rfc-editor.org/rfc/rfc2067.txt
RFC 2067: IP over HIPPI, J. Renwick1997-01-01T23:00:00-00:00ANSI Standard X3.218-1993 (HIPPI-LE[3]) defines the encapsulation of IEEE 802.2 LLC PDUs and, by implication, IP on HIPPI. This memo is a revision of RFC 1374, "IP and ARP on HIPPI", and is intended to replace it in the Standards Track. [STANDARDS-TRACK]