Jesse,thanks for the clarifications. I was, of course, trying to keep it simple and use easily understood metaphors. I fear going into that level of detail might be confusing to beginners?
jessemonroy650:
#2) On the Android side, there is Network Service Discovery, which appears to be similar, if not the same. I have not used it so I have no details.
This looks like a mechanism that can be embedded into applications so that one app can find another one, in a sort of peer-to-peer basis. It looks like a set of APIs that can be embedded into each application that needs it. It does not appear to be a general purpose advertisement scheme like mDNS. To make it work for The Yun, it looks like the advertising code would have to be added to the Yun, and the discovery code added to the IDE, which probably isn't going to happen. And even if that were implemented in the IDE, it still wouldn't help trying to access the Yun from a web browser or an application on another computer.
Android really needs some sort of mDNS client, I don't understand why there isn't one. I've been working on a product with an embedded WiFi module and web server, and the project manager is annoyed that all the computers, and all of the iOS phones and tablets can access it by name, yet she must use an IP address on her Android phone. It is, of course, the same issue with trying to access a Yun by name.