It stopped working for ipv4 only networks in Monterey.
See #1696
We add some config like so to System Configuration
```
scutil
show State:/Network/Service/9bee8941b5xxxxxx/IPv4
<dictionary> {
Addresses : <array> {
0 : 10.2.1.36
}
InterfaceName : feth4823
Router : 10.2.1.36
ServerAddress : 127.0.0.1
}
```
