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On this page
  • Debian 10
  • Create sysctl file:
  • Add these lines:
  • Update sysctl:
  • Ubuntu 18.04
  • Modify GRUB Bootloader
  • Modify the GRUB_CMDLINEs to include:
  • Update changes to GRUB
  1. Linux
  2. Networking

Disable IPv6

PreviousNetworkingNextNew System Setup

Last updated 4 years ago

Debian 10

Create sysctl file:

sudo nano /etc/sysctl.d/90-disable-ipv6.conf

Add these lines:

/etc/sysctl.d/90-disable-ipv6.conf
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

Update sysctl:

sudo sysctl -p -f /etc/sysctl.d/90-disable-ipv6.conf

Ubuntu 18.04

Modify GRUB Bootloader

sudo nano /etc/default/grub

Modify the GRUB_CMDLINEs to include:

/etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1"
GRUB_CMDLINE_LINUX="ipv6.disable=1"

Update changes to GRUB

sudo update-grub

sudo reboot

How to Disable IPv6 on Debian 10FAQforge
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