Sorry for the late answer. No, the only thing I have additionally to this is a main function who calls the is_valid_ip func in my VSCode file. The only thing I could think of somewhat similar would maybe be the cStr pointer, which I pass on to the upper function to reset it's values back to 0.

I thought it was, cause there were two other comments pointing at the same problem. Can you tell me what causes this to happen / what I need to change in my code? I really have no idea whatsoever.
Would be nice of you :) (not a solution, but explaining why this error is caused so I can fix it myself, atm I don't have any clue where to look)