networking lambdas to enable wakeonlan and hosts file

modules/modules.nix

@@ -49,6 +49,15 @@ in
       };
       description = "Set of IP's for all my computers.";
     };
+    interfaces = lib.mkOption {
+      type = lib.types.attrsOf lib.types.str;
+      default = {
+        server = "enp0s31f6";
+        miniserver = "enp2s0";
+        workstation = "enp5s0";
+      };
+      description = "Set of network interface names for all my computers.";
+    };
     mainServer = lib.mkOption {
       type = lib.types.str;
       default = "miniserver";