$ sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1 $ sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1 $ sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=1
$ sudo sysctl -w net.ipv6.conf.all.disable_ipv6=1 $ sudo sysctl -w net.ipv6.conf.default.disable_ipv6=1 $ sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=1