How to disable IPV6 on the fly?

Question

ubuntu

Welcome all. Tell me how to properly disable IPv6.
Googling found this

Убить ipv6 через sysctl и записать в sysctl.conf:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

And also in the grub config /etc/default/grub:
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1"
In principle, everything is clear, but I would like it without restarting the server. Thanks

Answer 1

sysctl -p run

Answer 2

fastest way:

echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6
echo 1 > /proc/sys/net/ipv6/conf/default/disable_ipv6