diff --git a/group_vars/dnagw.yml b/group_vars/dnagw.yml
index f663b1a..5598e61 100644
--- a/group_vars/dnagw.yml
+++ b/group_vars/dnagw.yml
@@ -65,6 +65,8 @@ ntpd_servers:
   - time2.google.com
   - time3.google.com
   - time4.google.com
+ntpd_constraints:
+  - "https://www.google.com"
 ntpd_listen:
   - "{{ network_interfaces[0].ipaddr }}"