On Mac OS X Yosemite, you need to enter in your password to change DNS entries. Otherwise the entries are all greyed out.
I change DNS frequently (Gogo Inflight among others doesn't work with custom DNS resolvers) and I'm the only person that uses my computer. Is there a setting I can flip to disable password protection?
sudo
etc by typing in my password.sudo
isn’troot
. it’s any account that’s able tosu
toroot
and act on its behalf.