By default, npcap keeps its DLLs not in system32 but in system32/npcap.
To load DLLs from there, mark them as "delay load DLLs" and adjust the
DLL search path before using/loading them.
Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
This uses VirtualAlloc/VirtualProtect on windows to simulate RX buffers
that are readonly to lwIP (see task #14807).
Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>