diff --git a/manifests/all.pp b/manifests/all.pp
index 9f94d45..a3e670d 100644
--- a/manifests/all.pp
+++ b/manifests/all.pp
@@ -9,7 +9,7 @@ class openstack::all(
   $public_interface,
   $private_interface,
   $floating_range       = false,
-  $fixed_range          = '10.0.0.0/16',
+  $fixed_range          = '10.0.0.0/24',
   $network_manager      = 'nova.network.manager.FlatDHCPManager',
   $network_config       = {},
   # middleware credentials