Restart dnsmasq whenever iiab-lan-iface comes back up

roles/network/tasks/dnsmasq.yml

@@ -14,6 +14,14 @@
    - { src: 'roles/network/templates/network/dnsmasq.service.u18', dest: '/etc/systemd/system/iiab-dnsmasq.service', mode: '0644' }
    - { src: 'roles/network/templates/network/dnsmasq-iiab', dest: '/etc/dnsmasq.d/dnsmasq-iiab', mode: '644' }
 
+- name: Copy script to restart dnsmasq whenever br0 comes up
+  template: 
+    src: "roles/network/templates/network/dnsmasq.sh.j2"
+    dest: "/etc/networkd-dispatcher/routable.d/dnsmasq.sh"
+    mode: "0755"
+    owner: root
+    group: root
+
 - name: Don't use stock dnsmasq systemd unit file during boot
   systemd:
     name: dnsmasq

roles/network/templates/network/dnsmasq.sh.j2

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+if [ "$IFACE" == "{{ iiab_lan_iface }}" ];
+then
+	/bin/systemctl restart dnsmasq.service
+fi