Hello,
I do not understand why this unnecessary logic is in place to stop anyone from setting their own DNS servers when in DHCP mode, after all I may need to take my Libreelec/Kodi box on a trip and it is easier to stay in DHCP mode as you may not know the IP range at the other location, but what you may want to do is keep your DNS servers the same.
So i am struggling to understand why someone has gone to lengths to make this rule?? it's not in any standard that I am aware of, and it's easy to do on other devices so slightly puzzled.
Thanks
JohnW