Disable IPv6 If your Internet is Working Slow in Ubuntu 12.04 Precise Pangolin/Linux Mint 13

Disable IPv6 If your internet is working Slow in Ubuntu 12.04 Precise Pangolin/Linux Mint 13/Any Ubuntu or Mint Version

Follow this to Disable IPv6, So we have to edit the sysctl.conf file.

To do this open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

Terminal Command:
sudo gedit /etc/sysctl.conf

Now add these lines at the end of file:

# IPv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

Now Save sysctl.conf file and close.

Enter following command to restart sysctrl settings:

Terminal Command:
sudo sysctl -p

That's it