Comment 69 for bug 1754671

Thanks for the data point Alexander. We probably need another option on the IP4 and IP6 settings for all connections indicating whether or not split DNS should be used if it is available for that connection. There would be a default value that would preserve existing behavior.

For Pavel's case (with a VPN grabbing all default-route traffic, but where some routes/devices are not routed over the VPN) that property would indicate that split DNS should be used.

For the SafeDNS case (where grabs all default-route traffic, but no other DNS should be used) that property would indicate that no split DNS should be used, and the DNS manager would merge/ignore DNS based on connection priority (since we will very soon support multiple VPN connections).

If the property was left as default, then ipX.never-default would control whether split DNS was used or not.