Internet Engineering Task Force (IETF) L. Eggert Request for Comments: 6247 Nokia Obsoletes: 1072, 1106, 1110, 1145, May 2011 1146, 1379, 1644, 1693 Updates: 4614 Category: Informational ISSN: 2070-1721
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Eggert Informational [Page 1]
RFC 6247 Undeployed TCP Extensions to Historic May 2011
include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License.
TCP has a long history, and several proposed TCP extensions have never seen widespread deployment. Section 5 of the TCP "roadmap" document [RFC4614] already classifies a number of TCP extensions as Historic and describes the reasons for doing so, but it does not instruct the RFC Editor and IANA to change the status of these RFCs in the RFC database and the relevant IANA registries. The sole purpose of this document is to do just that. Please refer to Section 5 of [RFC4614] for justification.
IANA has marked the TCP options 6, 7, 9, 10, 11, 12, 13, 14, and 15 documented in [RFC1072], [RFC1146], [RFC1644], and [RFC1693] as "obsolete" in the "TCP Option Kind Numbers" registry [TCPOPTREG], with a reference to this RFC.