NAT traversal for LISP

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Last updated 2019-12-04 (latest revision 2019-06-02)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a mechanism for IPv4 NAT traversal for LISP tunnel routers (xTR) and LISP Mobile Nodes (LISP-MN) behind a NAT device. A LISP device both detects the NAT and initializes its state. Forwarding to the LISP device through a NAT is enabled by the LISP Re-encapsulating Tunnel Router (RTR) network element, which acts as an anchor point in the data plane, forwarding traffic from unmodified LISP devices through the NAT.


Vina Ermagan (
Dino Farinacci (
Darrel Lewis (
Fabio Maino (
Marc Portoles-Comeras (
Jesper Skriver (
Chris White (

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