salt-formula/salt/virt/init.sls

wlan0:
  network.managed:
  - enabled: True
  - type: eth
  - bridge: br0

br0:
  network.managed:
  - enabled: True
  - type: bridge
  - proto: dhcp
  - require:
    - network: wlan0

libvirt:
  pkg.installed: []
  file.managed:
    - name: /etc/sysconfig/libvirtd
    - contents: 'LIBVIRTD_ARGS="--listen"'
    - require:
      - pkg: libvirt
  libvirt.keys:
    - require:
      - pkg: libvirt
  service.running:
    - name: libvirtd
    - require:
      - pkg: libvirt
      - network: br0
      - libvirt: libvirt
    - watch:
      - file: libvirt

libvirt-python:
  pkg.installed: []

libguestfs:
  pkg.installed:
    - pkgs:
      - libguestfs
      - libguestfs-tools