diff --git a/p4app/controller.py b/p4app/controller.py
index e6a4583..9eca422 100644
--- a/p4app/controller.py
+++ b/p4app/controller.py
@@ -38,11 +38,11 @@ class L2Controller(object):
         self.info={}
         self.info['ndp_multicast'] = ipaddress.ip_network("ff02::1:ff00:0/104")
 
-        self.info['v6_mask'] = "64"
+        self.info['v6_mask'] = 64
         self.info['v6_base'] = ipaddress.ip_network("2001:db8::/32")
         self.info['v6_gen'] = self.info['v6_base'].subnets(new_prefix=self.info['v6_mask'])
 
-        self.info['v4_mask'] = "24"
+        self.info['v4_mask'] = 24
         self.info['v4_base'] = ipaddress.ip_network("10.0.0.0/8")
         self.info['v4_gen'] = self.info['v4_base'].subnets(new_prefix=self.info['v4_mask'])