diff --git a/vimconn_openvim.py b/vimconn_openvim.py
index 62c1677..4a0843b 100644
--- a/vimconn_openvim.py
+++ b/vimconn_openvim.py
@@ -795,6 +795,7 @@
                 #TODO ip, security groups
         Returns the instance identifier
         '''
+        self.logger.debug("new_vminstance input: image='%s' flavor='%s' nics='%s'", image_id, flavor_id, str(net_list))
         try:
             self._get_my_tenant()
 #            net_list = []