Snap tutorial crashed my repositories

Fri Aug 10 07:01:52 UTC 2018

PS:

Even the evil Google sometimes could be a friend, see

https://www.google.de/search?source=hp&ei=LDdtW6rYHJKlwQKe5ILwCA&q=ubuntu+upgrade+fails+connect+%28101%3A+Network+is+unreachable%29&oq=ubuntu+upgrade+fails+connect+%28101%3A+Network+is+unreachable%29&gs_l=psy-ab.3..33i22i29i30k1.979.6097.0.6445.22.13.0.9.9.0.73.807.13.13.0....0...1c.1.64.psy-ab..0.22.883...0j0i22i30k1.0.auqw15u7tt8