我来补充一点:我是校园网,笔记本,平时插网线,然后平常去图书馆,所以网线拔来拔去,我试了楼主的所有方法,teredo依然是offline状态,后面我看到一个帖子,是关于修改注册表的,我按照上面的方法修改了注册表以后,重启以后teredo就启动了,下面是原文: Open registry editor. How To Open Registry Editor Navigate through the following: HKEY_LOCAL_MACHINE\SYSTEM\CURRENTCONTROLSET\SERVICES\TCPIP6\PARAMETERS In the right pane, right click Disabled Components and select Edit. Set the DWord value to 0. Restart your computer and the teredo tunneling adapter will now start. 看不懂的同学可以百度翻译,那一串大写的是注册表的目录,别把目录翻译进去了