IPv6: Disable IPV6 di ubuntu
From OnnoCenterWiki
1 Open Terminal.
2 Enter gksudo gedit /etc/sysctl.conf. ...
3 After that run $ cat /proc/sys/net/ipv6/conf/all/disable_ipv6. ...
4 Type command sudo sysctl -p. ...
5 Repeat above “Step 3” and it will now report 1.