インターネット層
RFC 1108: Internet Protocol Security Options, B. Schofield, October 1989
RFC 1112, Host Extensions for IP Multicasting, S. Deering, August 1989
RFC 1122, Requirements for Internet Hosts?Communication Layers, IETF, R. Braden (Editor), October 1989
RFC 1123, Requirements for Internet Hosts?Application and Support, IETF, R. Braden (Editor), October 1989
RFC 3439, Some Internet Architectural Guidelines and Philosophy, R. Bush, D. Meyer, December 2002