[bouncycastle]

this is the same thing with wifi. There are different channels and transmission power rules depending on country. Something you cannot change even if you are root or build your own kernel, as it's built in to the wifi hardware (eg. raspberry pi)

[kube-system]

Part 15 is a lot more permissive, and it's unlicensed. But yeah, the device still has to be part 15 certified.