# 28.3.USB 设备模式网络接口

虚拟网络接口支持由模板 1、8 和 10 提供。需要注意的是，这些模板都不适用于 Microsoft Windows。其他主机操作系统可以与所有三个模板兼容。必须加载 [usb\_template(4)](https://man.freebsd.org/cgi/man.cgi?query=usb_template\&sektion=4\&format=html) 和 [if\_cdce(4)](https://man.freebsd.org/cgi/man.cgi?query=if_cdce\&sektion=4\&format=html) 内核模块。

确保必要的模块已加载，并且在启动时设置了正确的模板，可以在 **/boot/loader.conf** 中添加以下行（如果该文件不存在，请创建它）：

```sh
if_cdce_load="YES"
hw.usb.template=1
```

要在不重启的情况下加载模块并设置模板，请使用：

```sh
# kldload if_cdce
# sysctl hw.usb.template=1
```


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