Move remaining nix configs into folders.

nix/configuration/roles/network/default.nix

@@ -0,0 +1,54 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  networking.dhcpcd.enable = false;
+  networking.useDHCP = false;
+  networking.nameservers = [
+    "194.242.2.2#doh.mullvad.net"
+    "2a07:e340::2#doh.mullvad.net"
+  ];
+  services.resolved = {
+    enable = true;
+    # dnssec = "true";
+    domains = [ "~." ];
+    fallbackDns = [ ];
+    dnsovertls = "true";
+  };
+
+  # Without this, systemd-resolved will send DNS requests for <X>.home.arpa to the per-link DNS server (172.16.0.1) which does not support DNS-over-TLS. This leads to the connection anging and timing out. This causes firefox startup to take an extra 10+ seconds.
+  #
+  # Test with: drill @127.0.0.53 odo.home.arpa
+  networking.extraHosts = ''
+    127.0.0.1 odo.home.arpa
+    10.216.1.1		homeserver
+    10.216.1.6		media
+    10.216.1.12		odo
+    10.217.1.1		drmario
+    10.217.2.1		mrmanager
+  '';
+
+  networking.wireless.iwd = {
+    enable = true;
+
+    settings = {
+      General = {
+        EnableNetworkConfiguration = true;
+        AddressRandomization = "network";
+        ControlPortOverNL80211 = false;
+      };
+    };
+  };
+  environment.systemPackages = with pkgs; [
+    iw
+    iwd
+    ldns # for drill
+    arp-scan # To find devices on the network
+  ];
+}