hosts/vidhar/dns.nix


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{ config, lib, pkgs, ... }:
{
  config = {
    services.unbound = {
      enable = true;
      resolveLocalQueries = false;
      stateDir = "/var/lib/unbound";
      localControlSocketPath = "/run/unbound/unbound.ctl";
      settings = {
        server = {
          interface = ["127.0.0.1" "10.141.0.1" "::0"];
          access-control = ["0.0.0.0/0 allow" "::/0 allow"];
          root-hints = "${pkgs.dns-root-data}/root.hints";

          num-threads = 12;
          so-reuseport = true;
          msg-cache-slabs = 16;
          rrset-cache-slabs = 16;
          infra-cache-slabs = 16;
          key-cache-slabs = 16;

          rrset-cache-size = "100m";
          msg-cache-size = "50m";
          outgoing-range = 8192;
          num-queries-per-thread = 4096;

          so-rcvbuf = "4m";
          so-sndbuf = "4m";

          # serve-expired = true;
          # serve-expired-ttl = 86400;
          # serve-expired-reply-ttl = 0;

          prefetch = true;
          prefetch-key = true;

          minimal-responses = false;

          extended-statistics = true;

          rrset-roundrobin = true;
          use-caps-for-id = true;
        };
      };
    };
  };
}