Migrate gateway

modules/shared/syscfg/default.nix

@@ -42,6 +42,36 @@ let
         type = types.str;
         default = "";
       };
+      server = {
+        enable = mkOption {
+          type = types.bool;
+          default = false;
+        };
+        peers = mkOption {
+          type = types.listOf types.str;
+          default = [];
+        };
+        forward = {
+          inInterface = mkOption {
+          type = types.str;
+          default = "ens3";
+          description = "Incoming interface for forwarding";
+        };
+        
+        toAddr = mkOption {
+          type = types.str;
+          description = "Destination address (IPv4 or IPv6)";
+          example = "10.10.1.2";
+        };
+        
+        ports = mkOption {
+          type = types.listOf (types.listOf types.port);
+          default = [];
+          description = "Port mappings: [ [srcPort dstPort] ... ]";
+          example = [ [ 22 22 ] [ 80 80 ] [ 443 443 ] ];
+        };
+        }
+      };
     };
   };
   makeOpt = with lib; {
@@ -55,7 +85,7 @@ let
     };
     virt = mkOption {
       type = types.bool;
-      default = true;
+      default = false;
     };
     power = mkOption {
       type = types.bool;