openvpn在win7或windows 2003有时会有下面的问题:

Thu Apr 07 23:13:51 2011 Notified TAP-Win32 driver to set aDHCP IP/netmask of 192.168.0.4/255.255.255.0 on interface{8FE77B49-DAF1-492B-881F-B15C991EF754} [DHCP-serv: 192.168.0.0,lease-time: 31536000]
Thu Apr 07 23:13:51 2011 NOTE: FlushIpNetTable failed oninterface [15] {8FE77B49-DAF1-492B-881F-B15C991EF754} (status=5) :拒绝访问。  
Thu Apr 07 23:13:52 2011 TEST ROUTES: 1/1 succeeded len=1ret=1 a=0 u/d=up
Thu Apr 07 23:13:52 2011 route ADD 192.168.1.0 MASK255.255.255.0 192.168.0.1
Thu Apr 07 23:30:54 2011 ROUTE: route addition failed usingCreateIpForwardEntry: 至少有一个参数不正确。  [if_index=15]
Thu Apr 07 23:30:54 2011 Route addition via IPAPI failedThu Apr 07 23:30:54 2011 Initialization SequenceCompleted

关于NOTE: FlushIpNetTable failed oninterface [15] {8FE77B49-DAF1-492B-881F-B15C991EF754} (status=5) :拒绝访问。 的问题,一般在windows 2003上出现比较多,可能是启动了windows 2003的路由及远程访问服务,停止这个服务后应该可以解决。

关于ROUTE: route addition failed usingCreateIpForwardEntry: 至少有一个参数不正确。的问题,可以在配置文件内加下面三个参数解决:

script-security 3
route-method exe
route-delay 2

另外win7的系统需注意要用管理员权限运行openvpn,否则会因没有权限加路由而失败。