Comment 2 for bug 1981646

Thank you for the suggestions in comment #1.

(2) has been implemented in:
https://github.com/canonical/netplan/pull/300

(1) got implemented just now, to be reflected in our docs:
https://netplan.readthedocs.io/en/latest/reference.html
https://github.com/canonical/netplan/commit/db043801d0d7838d84cb7d0e4e07b6088e2d5771

I'll keep this bug open as a feature request (wishlist) to consider the implementation of (3)