Edit /etc/sysconfig/network and change
Edit /etc/modprobe.conf and add these lines (if they're not in it):
Stop the ipv6tables service by typing:
Disable the ipv6tables service by typing:
After these changes, IPv6 will be disabled after the next reboot of your system.
NETWORKING_IPV6=yes
toNETWORKING_IPV6=no
Edit /etc/modprobe.conf and add these lines (if they're not in it):
alias net-pf-10 off
alias ipv6 off
Stop the ipv6tables service by typing:
service ip6tables stop
Disable the ipv6tables service by typing:
chkconfig ip6tables off
After these changes, IPv6 will be disabled after the next reboot of your system.