diff --git a/uncloud/hack/hackcloud/mac-gen.py b/uncloud/hack/hackcloud/mac-gen.py
index 9f23854..f2a5db0 100644
--- a/uncloud/hack/hackcloud/mac-gen.py
+++ b/uncloud/hack/hackcloud/mac-gen.py
@@ -26,29 +26,32 @@ import os.path
 import os
 import re
 
-import cinv
-from cinv import fsproperty
-
 log = logging.getLogger(__name__)
 
-class Error(cinv.Error):
+class Error(Exception):
     pass
 
 
 class Mac(object):
-
     def __init__(self):
-        self.base_dir = self.get_base_dir()
+        self.base_dir = "."
 
-    _prefix = fsproperty.FileStringProperty(lambda obj: os.path.join(obj.base_dir, "prefix"))
-    free    = fsproperty.FileListProperty(lambda obj: os.path.join(obj.base_dir, "free"))
-    last    = fsproperty.FileStringProperty(lambda obj: os.path.join(obj.base_dir, "last"))
+        self._prefix = "02:00"
+
+        self.free    = self.read_file("mac-free")
+        self.last    = self.read_file("mac-last")
+
+    def read_file(self, filename):
+        fname = os.path.join(self.base_dir, filename)
+        ret = []
 
-    def _init_base_dir(self):
         try:
-            os.makedirs(self.base_dir, exist_ok=True)
-        except OSError as e:
-            raise Error(e)
+            with open(fname, "r") as fd:
+                ret = fd.readlines()
+        except Exception as e:
+            pass
+
+        return ret
 
     @staticmethod
     def validate_mac(mac):
@@ -146,26 +149,11 @@ class Mac(object):
         host.host_type = args.type
 
     @classmethod
-    def commandline_args(cls, parent_parser, parents):
-        """Add us to the parent parser and add all parents to our parsers"""
+    def commandline(cls):
+        pass
 
-        parser = {}
-        parser['sub'] = parent_parser.add_subparsers(title="Mac Commands")
 
-        parser['free-add'] = parser['sub'].add_parser('free-add', parents=parents)
-        parser['free-add'].add_argument('address', help='Address to add to free database')
-        parser['free-add'].set_defaults(func=cls.commandline_free_add)
-
-        parser['free-list'] = parser['sub'].add_parser('free-list', parents=parents,
-            help="List free mac addresses")
-        parser['free-list'].set_defaults(func=cls.commandline_free_list)
-
-        parser['generate'] = parser['sub'].add_parser('generate', parents=parents)
-        parser['generate'].set_defaults(func=cls.commandline_generate)
-
-        parser['prefix-get'] = parser['sub'].add_parser('prefix-get', parents=parents)
-        parser['prefix-get'].set_defaults(func=cls.commandline_prefix_get)
-
-        parser['prefix-set'] = parser['sub'].add_parser('prefix-set', parents=parents)
-        parser['prefix-set'].add_argument('prefix', help="3 Byte address prefix (f.i. '00:16:3e')")
-        parser['prefix-set'].set_defaults(func=cls.commandline_prefix_set)
+if __name__ == '__main__':
+    m = Mac()
+    m.commandline()
+    print(m.free)