Having this flag set fixes connections initiated by the Windows host, but
unfortunately does not yet fix incoming connections. Connection state issue?
We still see 0xc00000e2 error events, translating to INTERNAL_ERROR.
This gives us more flexibility than using the intransparent FwpmIPsecTunnelAdd,
and fixes the issues we have seen with trap policies. Forward filters are
still missing, but required for site-to-site tunnels.
While MinGW declares all the required symbols, some of them are missing in the
library files. We provide missing variables locally, functions get a stub
that call the GetProcAddress()ed function from the DLL.
Also some MinGW headers define some enum values incorrectly, we overload these
using defines.
Martin Willi