How to disable ipv6 from grub in linux

open /etc/default/grub
edit to GRUB_CMDLINE_LINUX="ipv6.disable=1"
update-grub

Tested in Debian 9.x and debian 10.x

open /etc/default/grub
edit to GRUB_CMDLINE_LINUX="ipv6.disable=1"
grub2-mkconfig -o "$(readlink -e /etc/grub2.cfg)"

Tested in CentOS Linux release 7.6.1810 (Core)

مرجع آموزشی