OpenVPN on Vista

Oh my… Vista hit me on a collegues workstation today

In order to get OpenVPN clients to work on Vista, add the following to client.ovpn:

route-method exe

The lie above tells windows, it must NOT use the ‘IP API’ to set routes but instead use to commandline tool ‘route.exe’.

This resolves errors:

ROUTE: route addition failed using CreateIpForwardEntry: Ein oder mehrere Argumente sind ungültig. [if_index=11]
Route addition via IPAPI failed

(one or more invalid arguments. [if_index=11])

Wonder what comes next, does it depend on the installed ServicePacks or what?
d on the installed ServicePacks or what?