[Networkmanager] setup up isolated wifi with real ethernet. I used to use aphostd but networkmanager show be able to do it.

[sv savage]

I am trying to setup a RPi to be a local sensor server.using WiFi.
The remote sensors connect to the Wifi to access a https server.
I want the Wifi(wlan0) isolated from the Internet (eth0).

I need DNS on wlan0 so clients can access "server.localnet" at IP
10.10.10.1, this is needed to use https certificates.

But on the ethernet side normal DNS works.
I have tried many different combinations.

As for blocking internet,
Turn off Forwarding
Gateway to same IP
Rules in nftables
)

What commands do I use to setup this configuration?
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