diff --git a/de/heat-templates/fragments/NetworkAccBM.yaml b/de/heat-templates/fragments/NetworkAccBM.yaml
index 3ebfb3b..a5c02c8 100644
--- a/de/heat-templates/fragments/NetworkAccBM.yaml
+++ b/de/heat-templates/fragments/NetworkAccBM.yaml
@@ -3,6 +3,8 @@
 parameters:
   public_net_id:
     type: string
+  control_network_cidr:
+    type: string
 
 resources:
 
diff --git a/de/heat-templates/fragments/NetworkAccVM.yaml b/de/heat-templates/fragments/NetworkAccVM.yaml
index 8b03070..66515d2 100644
--- a/de/heat-templates/fragments/NetworkAccVM.yaml
+++ b/de/heat-templates/fragments/NetworkAccVM.yaml
@@ -3,6 +3,8 @@
 parameters:
   public_net_id:
     type: string
+  control_network_cidr:
+    type: string
 
 resources:
 
@@ -13,7 +15,7 @@
     properties:
       network: { get_resource: network }
       enable_dhcp: true
-      cidr: '10.10.0.0/24'
+      cidr: { get_param: control_network_cidr }
       dns_nameservers:
         - 172.18.224.6
         - 172.18.176.6
diff --git a/de/heat-templates/top.yaml b/de/heat-templates/top.yaml
index e14423c..34dcde7 100644
--- a/de/heat-templates/top.yaml
+++ b/de/heat-templates/top.yaml
@@ -228,6 +228,7 @@
     type: MCP2::NetworkAcc
     properties:
       public_net_id: { get_param: public_net_id }
+      control_network_cidr: { get_param: control_network_cidr }
 
   private_floating_network:
     type: MCP2::NetworkPrvFl