I'm not sure what you mean. What does UDP have to do with acceptable service? If you want to prioritize certain kinds of traffic, you either to do deep packet i

I'm not sure what you mean. What does UDP have to do with acceptable service? If you want to prioritize certain kinds of traffic, you either to do deep packet inspection, or you trust IP-level QOS info (which you probably shouldn't). There is no other way. No one sane prioritizes UDP in general, you prioritize things like VoIP, for which you anyway need to do DPI. And separating data connections from encryption has in fact proven to be a a bad idea over those 40 years.