In this tutorial I’ll be demonstrating how to change Fedora 23’s DNS to Google DNS. And also how to turn off ipv6.
Personally, for me, I found it difficult to find a simple tutorial and was astonished at how simple it really was.
Step 1. Change NetworkManager
$ cd /etc/NetworkManager/system-connections/
There should be one file in there. I have one named “fedora” so open it using vim
$ sudo vim fedora
Step 2. Edit the file to match these settings
So once you open the file scoll down to the [ipv4] and make it match the following
[ipv4] method=auto dns=18.104.22.168;22.214.171.124; ignore-auto-dns=true
And lastly disable ipv6 by scolling down to [ipv6] and make it match the following also
Restart the network
$ sudo systemctl restart network
One more thing! Make sure DNS > Automatic is turned off!