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IP Tunnels in the Internet Architecture

Document Type Expired Internet-Draft (intarea WG)
Authors Dr. Joseph D. Touch , Mark Townsley
Last updated 2020-03-15 (Latest revision 2019-09-12)
Replaces draft-touch-intarea-tunnels
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
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Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


This document discusses the role of IP tunnels in the Internet architecture. An IP tunnel transits IP datagrams as payloads in non- link layer protocols. This document explains the relationship of IP tunnels to existing protocol layers and the challenges in supporting IP tunneling, based on the equivalence of tunnels to links. The implications of this document are used to derive recommendations that update MTU and fragment issues in RFC 4459.


Dr. Joseph D. Touch
Mark Townsley

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