To enable and disable the ipv6 on a particular interface refer following parameter
net.ipv6.conf.[interface].disable_ipv6 = [value]
Interface : Use name of the interface, where you want to enable or disable the ipv6
i.e eth1, em1
Value : Use 0 to enable ipv6 and 1 to disable ipv6 on the interface.
For example, if we want to disable IPV6 on the eth0 interface Open the file “/etc/sysctl.conf” and add following line
net.ipv6.conf.eth0.disable_ipv6 = 1
Run following command to apply the changes immediately
sysctl -p
