Ostinato unable to find npcap DLLs

[pstavirs]

When npcap is installed in native mode, the DLLs are installed in C:\windows\system32\Npcap\.

But Ostinato always looks at the standard C:\windows\system32\ only.

One workaround is to add C:\windows\system32\Npcap\ to the %PATH% env var so that it can find it

[pstavirs]

The Ostinato for Windows installer should check if either winpcap or npcap is installed and if not, prompt the user to install npcap.

Prefer npcap over winpcap at runtime if both installed.

References -
https://npcap.com/guide/npcap-devguide.html#npcap-feature-native
https://stackoverflow.com/questions/1851267/mingw-gcc-delay-loaded-dll-equivalent

[pstavirs]

The Windows installer has been changed to check to check for WinPcap/Npcap post install as follows -

if wpcap.dll exists in standard system path
  all good
else if wpcap.dll exists in Npcap native path
  add npcap native path to PATH
else
  inform user to install npcap
  add npcap native path to PATH (assuming user will install in native mode, which is the default)
endif

This however doesn't prefer npcap over winpcap at runtime if both are installed