https://app.kbone.net/vault/rfc/docid/1190
RFC1055: Nonstandard for transmission of IP datagrams over serial lines: SLIP
Network Working Group J. Romkey Request for Comments: 1055 June l988 A NONSTANDARD FOR TRANSMISSION OF IP DATAGRAMS OVER SERIAL LINES: SLIP INTRODUCTION The TCP/IP protocol family runs over a variety of network media...
https://app.kbone.net/vault/rfc/docid/2607
RFC2341: Cisco Layer Two Forwarding (Protocol) "L2F"
Network Working Group A. Valencia Request for Comments: 2341 M. Littlewood Category: Historic T. Kolar Cisco System...