Comment 5 for bug 2053003

Reading through the PR that Joe referenced, it seems that we are trying to check all possible sources, and ignore particular errors. It seems plausible that the way the official image sources are being blocked is causing a different error that isn't in our 'allowed set' of errors that we ignore.

The particular patch lists:
  IsFatalError: func(err error) bool {
   return errors.Is(err, errors.NotFound) || errors.Is(err, errors.Unauthorized)

But the error we are seeing is "network is unreachable" which is probably a different error type.