#sysctl -w net.ipv6.conf.all.disable_ipv6=1
#sysctl -w net.ipv6.conf.default.disable_ipv6=1
#sysctl -w net.ipv6.conf.lo.disable_ipv6=1//code to check
#ip a
...
//should be no IPv6 entry now.#sysctl -w net.ipv6.conf.all.disable_ipv6=1
#sysctl -w net.ipv6.conf.default.disable_ipv6=1
#sysctl -w net.ipv6.conf.lo.disable_ipv6=1//code to check
#ip a
...
//should be no IPv6 entry now.