Comment 26 for bug 1638842

On 2017-04-15 I upgraded from 16.04 to 16.10 on the way to 17.04. This issue was the one and only problem I encountered.

In my case I started the wired interface manually (sudo ifconfig enp3s0 up && sudo dhclient epn3s0), got on-line and found this page. Message 6 above worked perfectly, and it's an easy fix once one knows what to do - but not until then.

It would be a very good idea to fix this, because as observed above it's a disproportionate nuisance as it prevents web access, hindering the the search for a fix and for neophytes - exactly the people we want to get using Linux - that could drive them away.