[SOLVED] Disable 5Ghz WiFi?

[Nutul]

Unfortunately, No. Pi will Connect to the 2.4ghz and be steered to the 5ghz Afterwards

Wait... if you provide only the list of the 2.4GHz the Pi won't steer into the other frequency domain, isn't this the meaning of providing a subset of valid frequencies, instead of the (default) full spectrum for both the 2.4 and 5?

ETA
of course, I'd prefer to keep my router from doing sh*t without my consent...