Linux How to disable and enable IPv6 on Linux Disable IPv6Use follow command in root access sysctl -w net.ipv6.conf.all.disable_ipv6=1 sysctl -w net.ipv6.conf.default.disable_ipv6=1Enable IPv6Use follow command in root access sysctl -w net.ipv6.conf.all.disable_ipv6=0 sysctl -w net.ipv6.