Hi,
Numerous documents specify that as of the release of Windows 10, the dns server selection process is based upon the Network Interface Metric, when having multiple adapters enabled. This is/was also the case when implementing a VPN adapter, for example by implementing Always On VPN.
This no longer seems to be the case since the release of Windows 10 20H2. While installing Windows 10 20H2 and configuring Always On VPN in a split-tunnel model, it turns out that our Wifi adapter has a metric of 5 and the Always On VPN adapter has a metric of 50.
In the past, when using Windows 10 v1909, the DNS servers used to resolve public DNS entries, were the ones of the interface with the lowest metric: The wifi adapter.
Now, after installing Windows 10 v20H2, all of a sudden the lowest metric is not the one used any more. The DNS servers used (verified with nslookup) are the ones on the Always On VPN adapter.
I have found no documention, stating that the dns server selection process has changed.
Can someone help me out with this one?