Table of Contents
Red Hat-based distributions
1. Open a terminal window.
2. Change to the root user.
3. Type these commands:
sysctl -w net.ipv6.conf.all.disable_ipv6=1
sysctl -w net.ipv6.conf.default.disable_ipv6=1
sysctl -w net.ipv6.conf.tun0.disable_ipv6=1To re-enable IPv6, type these commands:
sysctl -w net.ipv6.conf.all.disable_ipv6=0
sysctl -w net.ipv6.conf.default.disable_ipv6=0
sysctl -w net.ipv6.conf.tun0.disable_ipv6=0
sysctl -pDebian based distributions
Here’s how to disable the protocol on a Debian-based machine.
1. Open a terminal window.
2. Type this command:
sudo nano /etc/sysctl.conf3. Add the following at the bottom of the file:
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.tun0.disable_ipv6 = 1
4. Save and close the file.
5. Reboot the device.
Note
To re-enable IPv6, remove the above lines from /etc/sysctl.conf and reboot the device.
