update.

roles/firewall/templates/etc/systemd/system/ip6t-firewall.service.j2

@@ -1,6 +1,7 @@
-# {{ ansible_managed }}
+{{ ansible_managed | comment }}
 
 {%- if groups['gateway_server']|string is search(inventory_hostname) %}
+
 [Unit]
 Description=IPv6 Firewall with ip6tables
 After=network.target
@@ -16,6 +17,7 @@ User=root
 [Install]
 WantedBy=multi-user.target
 {% else %}
+
 [Unit]
 Description=IPv6 Firewall with ip6tables
 After=network.target

roles/firewall/templates/etc/systemd/system/ipt-firewall.service.j2

@@ -1,4 +1,4 @@
-# {{ ansible_managed }}
+{{ ansible_managed | comment }}
 
 {%- if groups['gateway_server']|string is search(inventory_hostname) %}