Recently, I moved to Linux and chose the Linux Mint distribution, which is also suitable for Windows fans as its appearance is more about Windows than Ubuntu's version. However, while it was all good, I noticed that there is a problem with the internet connection, which is literally slow.
After searching on related blogs, I found that the problem is due to the "IPv6" connection, which should be disabled to allow us to get the most out of our connection.
The following way works in Ubuntu distributions too, but I tried it at Mint 14.
Open a terminal Window and give the below command (Give your password when asked):
sudo gedit /etc/sysctl.conf
When the word processor opens, go at the end and put the commands below:
#disable ipv6
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
Save the file and close the word processor. Then give this command for the changes to be enabled:
sudo sysctl -p
Now go to the Speedtest page to test your connection. You can restore the system at any time, by deleting the "sysctl.conf" file.
Check also this and this posts for more information about.