/$$$$$$    /$$                 /$$      
                /$$__  $$ /$$$$                | $$      
      /$$   /$$| $$  \__/|_  $$        /$$$$$$$| $$$$$$$ 
     |  $$ /$$/| $$$$$$$   | $$       /$$_____/| $$__  $$
      \  $$$$/ | $$__  $$  | $$      |  $$$$$$ | $$  \ $$
       >$$  $$ | $$  \ $$  | $$       \____  $$| $$  | $$
      /$$/\  $$|  $$$$$$/ /$$$$$$ /$$ /$$$$$$$/| $$  | $$
apu2.|__/  \__/ \______/ |______/|__/|_______/ |__/  |__/

:.: PF States (Traffic in/out)