vnStat is basically never used (but patch it for divine reasons)

roles/network/tasks/detected_network.yml

@@ -1,3 +1,4 @@
+# Similar code block in roles/vnstat/tasks/install.yml
 - name: Do we have a gateway? If 'ip route' specifies a default route, Ansible parses details here...
   debug:
     var: ansible_default_ipv4
@@ -14,7 +15,7 @@
 
 - name: "If gateway responded, set 'gw_active: True' and 'iiab_wan_iface: {{ discovered_wan_iface }}' -- using discovered_wan_iface"
   set_fact:
-    iiab_wan_iface: "{{ discovered_wan_iface }}"
+    iiab_wan_iface: "{{ discovered_wan_iface }}"    # Same as code on Line 70 !
     gw_active: True
   when: discovered_wan_iface != "none" and gw_active_test.stdout == "1"
 

roles/vnstat/tasks/install.yml

@@ -1,3 +1,20 @@
+# Similar code block in roles/network/tasks/detected_network.yml
+- name: "If above ansible_default_ipv4.gateway is defined, set WAN candidate 'discovered_wan_iface: {{ ansible_default_ipv4.alias }}' -- using ansible_default_ipv4.alias"
+  set_fact:
+    discovered_wan_iface: "{{ ansible_default_ipv4.alias }}"
+  when: ansible_default_ipv4.gateway is defined
+
+- name: "Verify gateway active: ping -c4 {{ ansible_default_ipv4.gateway }} -- using ansible_default_ipv4.gateway"
+  shell: ping -c4 "{{ ansible_default_ipv4.gateway }}" | grep icmp_seq=4 | wc -l
+  register: gw_active_test
+  when: discovered_wan_iface != "none"
+
+- name: "If gateway responded, set 'gw_active: True' and 'iiab_wan_iface: {{ discovered_wan_iface }}' -- using discovered_wan_iface"
+  set_fact:
+    iiab_wan_iface: "{{ discovered_wan_iface }}"
+  when: discovered_wan_iface != "none" and gw_active_test.stdout == "1"
+
+
 - name: Install 'vnstat' package
   package:
     name: vnstat
@@ -7,10 +24,9 @@
   template:
     src: vnstat.conf.j2
     dest: /etc/vnstat.conf
-    # owner: root
-    # group: root
     mode: '0744'
 
+
 - name: Create database for WAN to collect vnStat data
   shell: /usr/bin/vnstat -i {{ iiab_wan_iface }}