Comment 8 for bug 1617765

I have found several other mentions of this issue:

https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1612882
https://irclogs.ubuntu.com/2016/04/26/%23snappy.html
https://irclogs.ubuntu.com/2016/08/30/%23snappy.html

Clearly some other people are affected too, not just the two of us. :)

In some of the above links there is a workaround (for snapd case):

apt-get purge snapd
apt-get install snapd

After my 1st attempt the problem remained. However after doing the above for a 2nd time the problem went away!

Maybe it picked another non-broken CDN node after the 2nd reinstall? Or something else similar to that?