RasbianWith VPN constantly enabled, it doesn't make sense for a local DNS server.
But why it makes no sense, I mean when I am outside in a public wifi I can encrypt my traffic with the vpn, without the dns server the traffic goes to my ISP. And the Dns queries say sth about my traffic and so on. I dont know whether I get it right. I mean this test https://cmdns.dev.dns-oarc.net/ is more bad with the dns from ISP than with a unbound local server.
Which operating system is installed on rP?