{
  networking.hostName = "dns";
  # networking.useHostResolvConf = false;
  # networking.interfaces.eth0.useDHCP = true;
  networking.interfaces.eth0.ipv4.addresses = [
    {
      address = "192.168.1.53";
      prefixLength = 24;
    }
  ];

  networking.defaultGateway = "192.168.1.1"; # your router
  networking.nameservers = ["8.8.8.8"]; # fallback resolvers

  networking.firewall.allowedTCPPorts = [53 67 80 443];
  networking.firewall.allowedUDPPorts = [53 67];

  networking.hosts = {
    "192.168.1.53" = ["dns" "dns.lab"];
  };
}