diff --git a/inventory/hosts b/inventory/hosts
index f04d7c1..cab4512 100644
--- a/inventory/hosts
+++ b/inventory/hosts
@@ -28,4 +28,4 @@ linse.freifunk-mwu.de  # ext. DNS-master
 #pudding.freifunk-mwu.de  #
 
 [test-vms]
-local-test-vm.ffmwu.local  ansible_host=192.168.137.7
+local-test-vm.ffmwu.local  ansible_host=192.168.137.7 require_dns=False
diff --git a/loctevm-reset-net.inc.yml b/loctevm-reset-net.inc.yml
index 395b832..5afb781 100644
--- a/loctevm-reset-net.inc.yml
+++ b/loctevm-reset-net.inc.yml
@@ -5,7 +5,7 @@
   delegate_to: 127.0.0.1  # local action
   register: nets
 
-- debug: var=nets
+#- debug: var=nets
 
 - block:
   - name: construct Vnet xml file
diff --git a/loctevm-test-prerequisites.yml b/loctevm-test-prerequisites.yml
new file mode 100755
index 0000000..46a4096
--- /dev/null
+++ b/loctevm-test-prerequisites.yml
@@ -0,0 +1,9 @@
+#!/usr/bin/ansible-playbook
+---
+
+- hosts: test-vms
+  remote_user: admin
+  strategy: free
+
+  roles:
+  - ffmwu-prereqs
diff --git a/roles/ffmwu-prereqs/tasks/main.yml b/roles/ffmwu-prereqs/tasks/main.yml
index 1e89436..912db2e 100755
--- a/roles/ffmwu-prereqs/tasks/main.yml
+++ b/roles/ffmwu-prereqs/tasks/main.yml
@@ -3,10 +3,12 @@
 - name: assert IPv4 DNS entry
   local_action: shell dig A {{ inventory_hostname }} | egrep '^{{ inventory_hostname }}'
   changed_when: False
+  when: "{{ require_dns | default('True') }}"
 
 - name: assert IPv6 DNS entry
   local_action: shell dig AAAA {{ inventory_hostname }} | egrep '^{{ inventory_hostname }}'
   changed_when: False
+  when: "{{ require_dns | default('True') }}"
 
 - name: test access to admin account (ssh key neccessary!)
   command: "true"