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Teredo: Tunneling IPv6 over UDP through NATs

Document Type Expired Internet-Draft (ngtrans WG)
Expired & archived
Author Christian Huitema
Last updated 2002-09-18 (Latest revision 2002-08-14)
RFC stream Internet Engineering Task Force (IETF)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


We propose here a service that enables nodes located behind one or several IPv4 NATs to obtain IPv6 connectivity by tunneling packets over UDP; we call this the Teredo service. Running the service requires the help of 'Teredo servers' and 'Teredo relays'; the Teredo servers are stateless, and only have to manage a small fraction of the traffic between Teredo clients; the Teredo relays act as IPv6 routers between the Teredo service and the 'native' IPv6 Internet.


Christian Huitema

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