How to fix netplan on Ubuntu 22.04 running in VM on windows 10?

I always have issues with the netplan config, even I thought I finally understood what is going on...

Anyway, I have the following configuration in /etc/netplan/01-network-manager-all.yaml:

# Let NetworkManager manage all devices on this systemnetwork:  version: 2  ethernets:    first:      match: {macaddress: "3c:e9:f7:a7:1c:0f"}      set-name: "wifi"      dhcp4: yes      nameservers:        addresses:          - 8.8.8.8          - 1.1.1.1 

The command ip link show shows the following output:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:002: cas10: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000    link/ether 00:e0:4c:68:02:02 brd ff:ff:ff:ff:ff:ff3: wifi: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000    link/ether 3c:e9:f7:a7:1c:0f brd ff:ff:ff:ff:ff:ff    altname enp0s94: wired: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000    link/ether 08:00:27:a9:09:5a brd ff:ff:ff:ff:ff:ff    altname enp0s105: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default     link/ether 02:42:14:1b:d7:c9 brd ff:ff:ff:ff:ff:ff

but when I run sudo netplan apply I get a bunch of warnings:

** (generate:3512): WARNING **: 13:50:08.032: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.WARNING:root:Cannot call Open vSwitch: ovsdb-server.service is not running.** (process:3510): WARNING **: 13:50:08.432: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.** (process:3510): WARNING **: 13:50:08.432: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.

I never had used "ovsdb-server" before, so why does that pop up now suddenly?

Also the permissions seems to be ok:

$ ls -l /etc/netplan/01-network-manager-all.yaml -rw-r--r-- 1 root root 411 Sep  3 13:41 /etc/netplan/01-network-manager-all.yaml

For the VM I have this configuration for the "wifi" adaptor which creates the connection to the internet:

Image may be NSFW.
Clik here to view.

So how to fix these issues?

I now can ping 8.8.8.8 but I cannot ping google.com even I added the nameserver settings...