我是用双网卡来实现路由的，原来网络一直正常，但最近老是出现断线的问题，查看系统日志发现了提示：“无法用路由器管理器为 IP 协议添加接口 内部”。不知问题出在何处?
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错误源：RemoteAccess
错误ID：20106
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Microsoft Knowledge Base Article - 308802
Error Message Cites Event 20106 and "Incorrect Parameter" When You Add RRAS Routing Interface
http://support.microsoft.com/default.aspx?scid=kb;cn;308802
RESOLUTION
To resolve this behavior, see whether the relevant RRAS server is configured only for local area network (LAN) routing:
1、Click Start, point to Programs, point to Administrative Tools, and then click Routing and Remote Access.
2、Right-click the relevant RRAS server, and then click Properties.
3、Click the General tab, and see whether Local routing only (LAN router) is selected.
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“Click the General tab, and see whether Local routing only (LAN router) is selected.”字面上是确保LAN－Mode，但我的机器默认的就是这个，于是我将单选钮选中另外一个，现在网络居然稳定了，没有出现断线问题。