Extended Option Space for TCP

Document Type Expired Internet-Draft (individual)
Author Eddie Kohler 
Last updated 2004-09-20
Stream (None)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo describes a reinterpretation of the TCP Data Offset field, affecting the previously illegal code points 0-4, that allows endpoints to fit more than 40 bytes of option into TCP segments.


Eddie Kohler (kohler@cs.ucla.edu)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)