Comment 4 for bug 1638836

Right, I think the file should only document the Ubuntu-specific things such as the facts that by default resolvconf and the systemd resolver are used, NetworkManager is used by default on Desktop and ifup on Server, and so on. There have been hundreds of questions about these basic things on AskUbuntu and the forums over the years. I have often referred people to Stephane Graber's blog post (https://www.stgraber.org/2012/02/24/dns-in-ubuntu-12-04/) for background info but this is as of 16.11 no longer adequate.