diff --git a/roles/ldap_server/molecule.yml b/roles/ldap_server/molecule.yml
index 10a0f73ea3a974c21b279ca0bf6c7067ade6b167..24e47385781ce16bf6a57d6c1aa51e2813b94ba2 100644
--- a/roles/ldap_server/molecule.yml
+++ b/roles/ldap_server/molecule.yml
@@ -20,7 +20,25 @@ vagrant:
 
   instances:
     - name: parameters-mandatory.local
+      interfaces:
+        - network_name: private_network
+          type: static
+          ip: 10.31.127.10
+          auto_config: yes
+
     - name: parameters-optional
+      interfaces:
+        - network_name: private_network
+          type: static
+          ip: 10.31.127.11
+          auto_config: yes
+
+    - name: client
+      interfaces:
+        - network_name: private_network
+          type: static
+          ip: 10.31.127.12
+          auto_config: yes
 
 verifier:
   name: testinfra