CI with npcap

[Trolldemorted]

The windows tests are not run against npcap, because only npcap OEM has a silent installer.

I contacted the npcap project, and they say we could work something out! I boldly assume you'll receive something you'll have to put into a github actions secret, so you might want to send the email yourselves, but if you are too busy I could do it too.

[sekineh]

This info might be useful when both libraries are installed on the same machine:

Note on WinPcap and npcap DLL search path (WinPcap comes first!)

https://nmap.org/npcap/guide/npcap-devguide.html#npcap-feature-native-dll

Npcap installs its DLLs into C:\Windows\System32\Npcap\ instead of WinPcap's C:\Windows\System32. Because of how Windows' DLL search path works, your application will use WinPcap first by default when Npcap and WinPcap coexist, as C:\Windows\System32\ is prior to C:\Windows\System32\Npcap. So when Npcap and WinPcap coexist, an application that want to use Npcap instead of WinPcap must make C:\Windows\System32\Npcap\ precedent to the C:\Windows\System32\ in the DLL search path. Here are two ways to modify this search path to make your application load Npcap's DLLs first, based on how your application links Npcap/WinPcap's library (wpcap.dll).

[sekineh]

In CI, just installing npcap only is enough.

[Wojtek242]

Resolved by #273