If you are experiencing slow DNS in Fedora, here is a great workaround instead of disabling IPV6. Just add options single-request to /etc/resolv.conf if you are running 'network'
Edit this file
Add options single-request to bottom of file and saveCode:vi /etc/resolv.conf
If you are running 'NetworkManager' and know how to add options to /etc/resolv.conf when it gets built post the steps below and I will add them here.Code:nameserver 4.2.2.1 nameserver 4.2.2.3 options rotate options single-request