IPv4 Extension Headers and UDP Encapsulated Extension Headers

Document Type Expired Internet-Draft (individual)
Author Tom Herbert 
Last updated 2019-09-09 (latest revision 2019-03-08)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This specification defines extension headers for IPv4 and a method to encapsulate extension headers in UDP to facilitate transmission over the Internet, as well as a definition of an IPv4 flow label. The goal is to provide a uniform and feasible method of extensibility that is shared between IPv4 and IPv6.


Tom Herbert (tom@quantonium.net)

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