libvirt: start default network

roles/libvirt/tasks/main.yml

@@ -10,6 +10,11 @@
 
 - name: autostart default network on boot
   file: src=/etc/libvirt/qemu/networks/default.xml dest=/etc/libvirt/qemu/networks/autostart/default.xml state=link owner=root group=root
+  register: default_network
 
 - name: start and enable libvirtd
   systemd: name=libvirtd enabled=yes state=started daemon_reload=yes
+
+- name: start default network
+  command: virsh net-start default
+  when: default_network.changed