Matthias, if you make any changes to be stricter, please ensure it will not affect Ubuntu 16.04 LTS or 18.04 LTS (or Debian Stretch), as long as those releases are still supported.
Matthias, if you make any changes to be stricter, please ensure it will not affect Ubuntu 16.04 LTS or 18.04 LTS (or Debian Stretch), as long as those releases are still supported.