Ubuntu updates occasionally fail due to IPv6 update servers not being reachable. While I prefer to keep IPV6 activated, this approach will allow you to disable it for updates, simply reverse the steps to re-enable afterwards!
- Update the configuration file…
sudo vi /etc/sysctl.conf
ADD:
# IPv6 disabled
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1
-
Then, you must enable the change…
sudo sysctl -p
- To verify…
ifconfig
