Restrict machine and component IDs to a basic pattern

lib/Machine.lib.php

@@ -281,13 +281,13 @@ class Machine implements JsonSerializable {
 
     /**
      * Generate a random ID number that is not in use.
-     * Default: 680######
+     * Default: 680[1-3]######
      * @global $database
      * @param int $min Optional minimum number.
      * @param int $max Optional maximum number.
      * @return int
      */
-    public static function generateId(int $min = 680100000, int $max = 680999999): int {
+    public static function generateId(int $min = 680100000, int $max = 680399999): int {
         global $database;
 
         do {