This bug was fixed in the package netplan.io - 0.103-0ubuntu7
--------------- netplan.io (0.103-0ubuntu7) impish; urgency=medium
* Add d/p/0006-netplan-set-make-it-possible-to-unset-a-whole-devtyp.patch: Fix unset of a devtype subtree, e.g. "netplan set network.ethernets=null". (LP: #1942930)
-- Lukas Märdian <email address hidden> Tue, 05 Oct 2021 09:41:31 +0200
This bug was fixed in the package netplan.io - 0.103-0ubuntu7
---------------
netplan.io (0.103-0ubuntu7) impish; urgency=medium
* Add d/p/0006- netplan- set-make- it-possible- to-unset- a-whole- devtyp. patch: ethernets= null".
Fix unset of a devtype subtree, e.g. "netplan set network.
(LP: #1942930)
-- Lukas Märdian <email address hidden> Tue, 05 Oct 2021 09:41:31 +0200