Preferred Alternatives for Tunnelling HIP (PATH)

Document Type Expired Internet-Draft (individual)
Author Pekka Nikander 
Last updated 2006-03-09
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


With the extensions defined in this document Host Identity Protocol (HIP) can traverse legacy Network Address Translators (NATs) and certain firewalls. The extension will be useful as part of the base exchange and with the HIP Registration Extension. By using a rendezvous server an additional entity inside the network is utilized, which not only allows but also supports more restrictive NATs to be traversed.


Pekka Nikander (

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