diff --git a/provisioning/playbook.yml b/provisioning/playbook.yml
index 09824c80cbc161e2b579714e291e37797bf3b54f..5df8acec799bdc5ae8060b4f3d7e8b4b52d6e2ec 100644
--- a/provisioning/playbook.yml
+++ b/provisioning/playbook.yml
@@ -104,6 +104,7 @@
           - chain: FORWARD
             destination: '{{ item }}'
             in_interface: '{{ host_interface }}'
+            out_interface: '{{ hostvars["man"]["default_gateway_interface"] }}'
             jump: DROP
       loop: '{{ private_ip_address_range }}'