Great. Cisco wants to get a technique into TCP/IP that is patented and licensed by Cisco. I hope the IETF doesn't accept this nonsense. As Theo de Raadt correctly noted, there are better solutions. And what Cisco has so proudly patented is so trivial that you have to wonder why on earth anyone granted a patent for it...
That's all we needed, patent madness and patent absurdities in the basic internet protocol
At heise online news there's the original article.