红帽全球峰会20.12.4. 列出客户机虚拟机虚拟接口的链接状态
virsh domif-getlink 域 interface-device 命令检索指定的接口设备链接状态。要确定为域定义了哪些接口设备，请使用 virsh domiflist 命令，并使用
Interface 或 MAC 列作为接口设备选项。默认情况下，virsh domif-getlink 检索正在运行的域的链接状态。若要检索域的永久配置，请使用 --config 选项。
例 20.24. 如何显示客户机虚拟机接口的链接状态
以下示例显示确定 rhel7 域的接口设备，然后确定其状态为 up，然后将状态更改为 down，然后验证更改是否成功：
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