How to disable IPv6 in Ubuntu
August 20th, 2008 | 
Author: To disable IPv6 in Ubuntu follow the steps:
1- sudo gedit /etc/modprobe.d/aliases
2- Search the following line: alias net-pf-10 ipv6
3- Modify it to be alias net-pf-10 off ipv6
4- Save
5- Restart networking or reboot
note: restart networking [sudo /etc/init.d/networking restart]
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