cygwin warning:
  MS-DOS style path detected: C:\Users\labredes\Desktop\TFG Seguridad\Escenario\Ataques sobre capa de Enlace\MAC Flood\01-Link-MACFloodAttack\project-files\dynamips
  Preferred POSIX equivalent is: /cygdrive/c/Users/labredes/Desktop/TFG Seguridad/Escenario/Ataques sobre capa de Enlace/MAC Flood/01-Link-MACFloodAttack/project-files/dynamips
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
