it is possible to make it so that only the first dns source is always turned on and only in cases of its unavailability the second spare is turned on ?
Very often there is incompatibility and there is an incorrect definition of dns if two sources work.
it would be cool if there was such a function.
Or can I somehow enable it myself through PuTTY? then tell me how to do it?
If one source of dns works, then there is less 3 megabits of RAM, which has a very good effect on performance. The second dns source is needed as a backup, in case of unforeseen situations, if the first one suddenly stops working. I would like to implement it somehow
or it can pause for 5 seconds, if there is no https response from the first source, then the second dns source is turned on, but the first one should be in priority