Software >> OS >> Unix >> Linux >> Ubuntu >> How to disable ipv6

Ubuntu 20


## edit /etc/default/grub

sudo vi /etc/default/grub


## Change the 2 lines as follows to add the ipv6.disable=1 into the GRUB CMDLINE

From:
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX=""

To:
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 quiet"
GRUB_CMDLINE_LINUX="ipv6.disable=1"


## update grub bootloader by

sudo update-grub


## reboot

sudo reboot