Comment 18 for bug 1772859

While working on a remote server, it took me 2-3 hours to locate this bug report and apply its workarounds. It's certainly not a good default behavior.

In case someone has already removed netplan, the recommended steps to get network-manager to manage the interfaces, as I understood them, are:

```
sudo -i
apt install ubuntu-minimal
echo "# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager" >/etc/netplan/01-network-manager-all.yaml
update-initramfs -u # Not sure if this is needed or not
reboot
```

I.e. I think that /etc/netplan/01-network-manager-all.yaml comes from some installer and it's not part of some package and it needs to be manually re-created.