Disabling IPv6 support in Red Hat Enterprise Linux 6
Create a file /etc/modprobe.d/ipv6.conf with the following contents:
options ipv6 disable=1
For completeness, it is a good idea to configure the ip6tables service not to start at boot by issuing the following command:
options ipv6 disable=1
For completeness, it is a good idea to configure the ip6tables service not to start at boot by issuing the following command:
chkconfig ip6tables off
Reboot the system to disable IPv6 support.
Re-enabling IPv6 support in Red Hat Enterprise Linux 6
Review the files under /etc/modprobe.d/ and remove (or comment out) any of the following lines:
options ipv6 disable=1
install ipv6 /bin/true
blacklist ipv6
Configure the ip6tables service to start at boot by issuing the following command:
chkconfig ip6tables on
Reboot the system to activate IPv6 support.
