Tuts4Tech

If you don't use ivp6 for anything and your ISP doesn't support it theres not much of a need to have it enabled. To disable it we need to edit /etc/modprobe.d/aliases

nano /etc/modprobe.d/aliases

By default you will have the following line

alias net-pf-10 ipv6

Replace it with the following

alias net-pf-10 off
alias ipv6 off

You can now remove all the ipv6 stuff from /etc/hosts and once you reboot ipv6 will be disabled