Dear Sirs, The proposal in object has a changed status from "experimental" to "proposed standard". Unfortunately, such a proposal is encumbered by a patent. That patent in question is claimed by RedPhone Security. RedPhone has given a license to anyone who implements the protocol, but they still threaten to sue anyone that uses it. Despite claims that RedPhone have offered a license for implementation of this protocol, users of this protocol would still be threatened by the patent. The IETF should continue to oppose this standard until RedPhone provide a royalty-free license for all users. Thanks and Regards, Davide Del Vento, Consulting Services Software Engineer NCAR Computational & Information Services Laboratory http://www.cisl.ucar.edu/hss/csg/ office: Mesa Lab, Room 42B phone: (303) 497-1233 mobile: (720) 240-1704 email: ddvento@xxxxxxxx _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf