And people wonder why ioshit devices are all so cloud dependent. I just want my microwave to talk to my refrigerator (or whatever). But they have to use https, because. And the cert has to expire every 90 days, because. So now I provision a kitchen full of stuff with AWS creds so they can respond to DNS challenges to get those certs.
So much simpler for everything to revert to client only mode and route all messages through a server 3000 miles away. Until they pull the plug and nothing works at all.