https://spigotmc.org/threads/bungeecore-with-spigot-and-forge-servers.25827/
https://github.com/SpigotMC/BungeeCord/issues/899
https://spigotmc.org/threads/using-forge-with-bungeecord-that-has-ip_forward-enabled.93720/
http://minecraftforge.net/forum/index.php/topic,34048.0.html