Nixos NetworkManager[1303]: <warn> [1709934611.6366] dns-mgr: init: ns mode 'unbound' was removed. Update your configuration

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I’m seeing the following warning when checking my system log: nixos NetworkManager[1303]: <warn> [1709934611.6366] dns-mgr: init: ns mode 'unbound' was removed. Update your configuration

What does it mean? My network is working normally but i do have set unbound as my dns resolver. This is listed as an option for networking.networkmanager.dns however, so i don’t understand why the log warning says that it has been removed.

My configuration is as follows:

  networking = {
    hostName = "nixos";
    nameservers = ["127.0.0.1" "::1"];
    dhcpcd = {
      wait = "if-carrier-up";
      extraConfig = "nohook resolv.conf noarp";
    };
    networkmanager = {
      enable = true;
      plugins = lib.mkForce []; 
      dns = "unbound";
      wifi.backend = "iwd";
      wifi.powersave = true;
    };
  };

  services.unbound = {
    enable = true;
    enableRootTrustAnchor = true;
    settings = {
      server = {
        verbosity = "0";
        cache-min-ttl = "300";
        cache-max-ttl = "86400";
        use-syslog = "yes";
        hide-identity = "yes";
        hide-version = "yes";
        harden-short-bufsize = "yes";
        harden-large-queries = "yes";
        harden-glue = "yes";
        harden-dnssec-stripped = "yes";
        harden-below-nxdomain = "yes";
        harden-referral-path = "yes";
        harden-algo-downgrade = "yes";
        ip-freebind = "no";
        qname-minimisation = "yes";
        use-caps-for-id = "yes";
        prefetch = "yes";
        prefetch-key = "yes";
        rrset-roundrobin = "yes";
        minimal-responses = "yes";
        tls-cert-bundle = "/etc/ssl/certs/ca-certificates.crt";
      };
      remote-control.control-enable = false;
    };
  };
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