20.16.9.16. 가상 링크 상태 수정

  ...
  <devices>
    <interface type='network'>
      <source network='default'/>
      <target dev='vnet0'/>
      <link state='down'/>
    </interface>
  <devices>
  ...

  ...
  <devices>
    <interface type='network'>
      <source network='default'/>
      <target dev='vnet0'/>
      <link state='down'/>
    </interface>
  <devices>
  ...