ifupdown2: notify ifup -a + auto instead of allow-hotplug

roles/ifupdown2/handlers/main.yml

@@ -3,4 +3,7 @@
   systemd:
     name: networking.service
     state: restarted
+
+- name: Bring all interfaces up
+  shell: /usr/sbin/ifup -a
 ...

roles/ifupdown2/tasks/main.yml

@@ -32,6 +32,7 @@
     mode: u=rw,g=r,o=
   notify:
     - Restart networking
+    - Bring all interfaces up
 
 - name: Enable and start networking
   systemd:

roles/ifupdown2/templates/interfaces.j2

@@ -1,7 +1,7 @@
 {{ ansible_managed | comment }}
 
 {% for name, iface in ifupdown2__interfaces.items() %}
-allow-hotplug {{ name }}
+auto {{ name }}
 iface {{ name }}
 {% for address in iface.addresses %}
     address {{ address | ipaddr }}