Nice.

You inspired me to look up RFC8366. That's a remarkable document, apparently written in English, where at least the abstract and introduction look like they might be the result of a particularly nerdy game of Mad-Libs. :)

I, personally, have never observed a pledge doing anything other than being heard, although I observed Lemon Pledge smelling unpleasant. But, in RFC8366, pledges can join domains!

(I assume that a manufacturer makes a device and the device somehow contains a "pledge" from the manufacturer that the device is what it says it is...)