root@fs18ast16:~# ee /etc/sysctl.conf

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.enp0s3.disable_ipv6 = 1

root@fs18ast16:~# sysctl -p
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.enp0s3.disable_ipv6 = 1

root@fs:/home/teee# ee /etc/sysctl.d/70-disable-ipv6.conf
net.ipv6.conf.all.disable_ipv6 = 1

root@fs:/home/teee# ee /etc/default/grub
GRUB_CMDLINE_LINUX=”ipv6.disable=1″

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