system/nixos/shared/encrypted-dns.nix

{ ... }:

{
  networking = {
    nameservers = [ "127.0.0.1" "::1" ];
    networkmanager.dns = "none";
  };

  services.dnscrypt-proxy2 = {
    enable = true;
    # See: https://github.com/DNSCrypt/dnscrypt-proxy/blob/2.1.5/dnscrypt-proxy/example-dnscrypt-proxy.toml
    settings = {
      require_dnssec = true;
      require_nolog = true;
      require_nofilter = true;

      sources.public-resolvers = {
        urls = [
          "https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v3/public-resolvers.md"
          "https://download.dnscrypt.info/resolvers-list/v3/public-resolvers.md"
        ];
        cache_file = "/var/lib/dnscrypt-proxy2/public-resolvers.md";
        minisign_key = "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
      };

      # You can choose a specific set of servers from https://github.com/DNSCrypt/dnscrypt-resolvers/blob/master/v3/public-resolvers.md
      server_names = [
        "ams-ads-doh-nl"
        "ams-dnscrypt-nl"
        "ams-doh-nl"
        "brahma-world"
      ];
    };
  };

}