Disable IPv6 - Linux

To disable IPv6 Temporary
sudo sh -c 'echo 1 > /proc/sys/net/ipv6/conf/<interface-name>/disable_ipv6'


note: <interface-name> change to "all" for all interface



Disable IPv6 Permanently across Reboots

open /etc/sysctl.conf

add
# to disable IPv6 on all interfaces system wide
net.ipv6.conf.all.disable_ipv6 = 1

# to disable IPv6 on a specific interface (e.g., eth0, lo)
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.eth0.disable_ipv6 = 1


Save.

Thanks.