Set this in /etc/sysctl.conf net.ipv6.conf.all.disable_ipv6 = 1 #apply the settings sudo sysctl -p Quick Temp Fix (expires upon reboot): If you just want ipv6 gone from a specific interface change "all" below to say eth0 or whatever interface. echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6........