Reply To: Slow DNS issues

Forums Service Issues Networking, Routing, Technology Slow DNS issues Reply To: Slow DNS issues

October 21, 2021 at 3:34 am

Macs come with the networksetup command line tool that allows you to configure the network settings. It can also be used to change the nameservers by using it with the -setdnsservers flag. Open your terminal by going to the spotlight and typing “terminal” and run:

sudo networksetup -setdnsservers Wi-Fi
That will force the Wi-Fi to go through CleanBrowsing ( If it works, you won’t get any warning or error in the terminal and you are all set. As a bonus point, you can run the chflags command to block anyone from changing the nameserver via the graphical user interface:

sudo chflags schg /Library/Preferences/SystemConfiguration/preferences.plist

This worked better. Seems to be the app that is causing issues