Question:

[SEDocotor]

Whats up with this?:
https://sourceforge.net/p/desmume/code/5345/log/?path=/trunk/desmume/src/windows/winpcap.h

[zeromus]

It's a strange old link to an obsolete SVN repository.
The new URL would be
https://github.com/TASEmulators/desmume/commits/master/desmume/src/frontend/windows/winpcap.h