Comment 13 for bug 1876884

This is my `/etc/netplan/01-network-manager-all.yaml` file:
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager

Here's the output of `netplan apply --debug`:
Found cgroup2 on /sys/fs/cgroup/unified, unified hierarchy for systemd controller
root@arge-pc2:/run# netplan --debug apply
** (generate:2327): DEBUG: 15:42:52.416: Processing input file /etc/netplan/01-network-manager-all.yaml..
** (generate:2327): DEBUG: 15:42:52.416: starting new processing pass
** (generate:2327): DEBUG: 15:42:52.416: Processing input file /run/netplan/enp1s0.yaml..
** (generate:2327): DEBUG: 15:42:52.416: starting new processing pass
** (generate:2327): DEBUG: 15:42:52.416: We have some netdefs, pass them through a final round of validation
** (generate:2327): DEBUG: 15:42:52.416: enp1s0: setting default backend to 1
** (generate:2327): DEBUG: 15:42:52.416: Configuration is valid
** (generate:2327): DEBUG: 15:42:52.416: Generating output files..
** (generate:2327): DEBUG: 15:42:52.416: NetworkManager: definition enp1s0 is not for us (backend 1)
(generate:2327): GLib-DEBUG: 15:42:52.416: posix_spawn avoided (fd close requested)
DEBUG:netplan generated networkd configuration changed, restarting networkd
DEBUG:no netplan generated NM configuration exists
DEBUG:enp1s0 not found in {}
DEBUG:Merged config:
network:
  bonds: {}
  bridges: {}
  ethernets:
    enp1s0:
      critical: true
      dhcp-identifier: mac
      dhcp4: true
      nameservers:
        addresses:
        - 192.168.2.1
        search:
        - fritz.box
  vlans: {}
  wifis: {}

DEBUG:Skipping non-physical interface: lo
DEBUG:device enp1s0 operstate is up, not changing
DEBUG:{}
DEBUG:netplan triggering .link rules for lo
DEBUG:netplan triggering .link rules for enp1s0
Found cgroup2 on /sys/fs/cgroup/unified, unified hierarchy for systemd controller