[madeofpalk]

Lets be pragmatic here though - it's not reasonable to expect all software to be open source, nor is it reasonable to expect that only people who run a fully FOSS stack be able to inspect network traffic on their computer.

[tialaramex]

By definition the insistence that it should be possible to do something that's actually impossible is not pragmatism.

If you don't actually control the box, it can do whatever it pleases. It doesn't need an IETF Standards Track RFC, it can just choose to do it and you can't stop it.