Update to Nortel Networks Statement about IPR in draft-ietf-behave-nat-behavior-discovery
Date: 20 March 2008 
From: Michelle Lee <mleelaw@nortel.com>


Dear Sir,

As identified in its IPR disclosure ID#919, Nortel Networks Limited 
has an issued US patent no. 6,993,595, entitled "Address Translation 
Change Identification", that may be relevant to at least a portion of 
the following IETF Internet Draft, if approved and implemented:

Title: NAT Behavior Discovery Using STUN
draft-ietf-behave-nat-behavior-discovery-02
Tag: < draft-ietf-behave-nat-behavior-discovery-02>
www.ietf.org/internet-drafts/draft-ietf-behave-nat-behavior-discovery-02.txt

As understood, this IETF NAT Behaviour Discovery Using STUN draft 
is presently an Experimental status and not an IETF standards-track 
document. However, if and to the extent claims of U.S. patent no.
6,993,595 cover and are necessary to practice a resulting IETF standard 
based upon the above-referenced IETF Internet Draft as approved by IESG 
and implemented, Nortel Networks is willing to make available licenses 
on fair, reasonable, reciprocal, and non-discriminatory terms under 
such necessary claims of this patent for compliance with such resulting IETF standard.

Requests may be addressed to:

Mark Hearn
Nortel Networks
2221 Lakeside Boulevard, M/S 991/14/B20
Richardson, Texas 75082 USA
hearnm@nortel.com

My contact information is set out below.

Kind Regards,
Michelle Lee
IP Counsel
Nortel Networks Limited
5-195 The West Mall
Toronto, Ontario Canada M9C 5K1
Fax: 905-863-1986
mleelaw@nortel.com