The following examples use a couple of flags on the interface to retrieve its current state and check for loopback.

下面的示例使用一对接口标志来检索其当前状态，并检查环回。

youdao

The following examples use a couple of flags on the interface to retrieve its current state and check for loopback.

下面的示例使用一对接口标志来检索其当前状态，并检查环回。

youdao