I have a new Kubuntu 18.04 installation which was done from scratch, which normally works ok. What I have noticed though, is that whenever certain updates cause a ureadahead reconfiguration on next reboot, when that next reboot takes place, the system cannot use IPV6 at all for some reason. ping -6 -nc5 www.google.com for example produces a Network is unreachable error.
I have created my own ethernet connection profile on Network Connections where IPV4 connection is Manual and IPV6 is Automatic. IPV4 connectivity works ok every time, whereas IPV6 is facing the problem I mentioned above.
If I restart the system at that point, everything goes back to normal and IPV6 connectivity is fully restored.
Any ideas please?
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