How to disable ipv6 in Fedora

Edit default grub config file

sudo vi /etc/default/grub

Append ‘ipv6.disable=1’ to line 6

ipv6.disable=1

Tap Esc key
Save changes

:wq

Push the change to grub.cfg

grub2-mkconfig -o /boot/grub2/grub.cfg

Reboot