NixOS/hosts/orion/modules/networking.nix

{ inputs, lib, pkgs, hostname, ... }:

let
  hostname = "orion";
  networks_dhcp_use_dns = "no";
  networks_dhcp = "yes";
  networks_multicast_dns = "yes";
  networks_ipv6_privacy = "yes";
  networks_ipv6_accept_ra = "yes";
  networks_network_config = {
    DHCP = networks_dhcp;
    MulticastDNS = networks_multicast_dns;
    IPv6PrivacyExtensions = networks_ipv6_privacy;
    IPv6AcceptRA = networks_ipv6_accept_ra;
  };
  resolved_nameservers = [
    "198.180.150.12#rgnet-iad.anycast.uncensoreddns.org"
    "2001:418:8006::12:853#rgnet-iad.anycast.uncensoreddns.org"
    "194.242.2.2#dns.mullvad.net"
    "2a07:e340::2:853#dns.mullvad.net"
  ];
  resolved_fallback_nameservers = [ "1.1.1.1#one.one.one.one" "1.0.0.1#one.one.one.one" ];
in
{
  systemd.network = {
    enable = true;
    networks = {
      "10-wlan" = {
        matchConfig.Name = [ "wl*" ];
        networkConfig = networks_network_config;
        dhcpV4Config = {
          RouteMetric = 600;
          UseDNS = networks_dhcp_use_dns;
        };
        ipv6AcceptRAConfig = {
          RouteMetric = 600;
          UseDNS = networks_dhcp_use_dns;
        };
      };
      "10-ethernet" = {
        matchConfig.name = [ "en*" "eth*" ];
        networkConfig = networks_network_config;
        dhcpV4Config = {
          RouteMetric = 100;
          UseDNS = networks_dhcp_use_dns;
        };
        ipv6AcceptRAConfig = {
          RouteMetric = 100;
          UseDNS = networks_dhcp_use_dns;
        };
      };
      "10-wwan" = {
        matchConfig.name = [ "ww*" ];
        networkConfig = networks_network_config;
        dhcpV4Config = {
          RouteMetric = 700;
          UseDNS = networks_dhcp_use_dns;
        };
        ipv6AcceptRAConfig = {
          RouteMetric = 700;
          UseDNS = networks_dhcp_use_dns;
        };
      };

    };
  };

  services.resolved = {
    enable = true;
    dnssec = "true";
    domains = [ "~." ];
    fallbackDns = resolved_fallback_nameservers;
    llmnr = "true";
    extraConfig = ''
      MulticastDNS=yes
      DNSOverTLS=yes
      CacheFromLocalhost=no
      Cache=yes
    '';
  };
  networking = {
    hostName = "${hostname}";
    wireless.iwd.enable = true;
  };

}