Yes, I think it sane that there are more than one NAT involved here, but if so why does Roon not report that?
And yes, I do not think that this is fixable for me.
Is a takeaway for someone reading this thread: “you may have a multiple NAT problem, even if roon is not reporting this”
And finally a question for Roon HQ: Other people who sell robots, NAS devices, security cameras and weather stations seem to have no problem accessing their devices inside my house, why is roon having such a hard time? Why not do what everyone else is doing?
I would have liked to say “come on, its not rocket science”, but it is to me.
Robots, weather stations, and even security cameras don’t have a need (hopefully) to stream gigabits of data from your own local network in nearly realtime, so they can punch a hole into your firewall from the inside and set up a connection going through their cloud servers, because a lot of data doesn’t have to to be transmitted. It’s simply a different thing when the amount of data requires a direct connection from the outside to your server.
I have never seen a NAS device that can be accessed from the outside except with the same port forwarding stuff as ARC requires, at least if the NAS is used to access meaningful amounts of data from the outside, like video/music streaming or file access. (Maybe remote admin stuff on the NAS doesn’t need it, which amounts to the same thing as weather stations and robots).
I can log into a camera in my house and live stream video to me anywhere in the world. Video. I can see which ports the camera is using, but no ports set up by me. No problems with connections being refused. No talk of multiple NATs. The camera(s) do not even have fixed IP addresses.
When you bought the camera, you didn’t just plug it in and could access it , you had to do something with set up before it worked. That set up process did the linking and the cloud link is getting a tiny bit of data through it so the camera manufacturer can afford to host the connection. If you use more features then the manufacturer will charge you a small monthly fee to compensate.
Now take tens of thousands of Roon users streaming high definition files and paying no more for it. To host that would bankrupt Roon. Hence the need for you to establish a connection type. Roon doesn’t know about the cat man’s equipment as he is your ISP and your systems have no access to find out about anything in his set up. To be honest it sounds like he should stick to cats as he seems clueless as to what he is doing if he can’t grasp port forwarding.