Can not find Associated clients from AP

[GoogleCodeExporter]

0. What version of Reaver are you using?  (Only defects against the latest
version will be considered.)
1.4

1. What operating system are you using (Linux is the only supported OS)?
backtrack 5R2

2. Is your wireless card in monitor mode (yes/no)?
Yes
3. What is the signal strength of the Access Point you are trying to crack?
-52dbm
4. What is the manufacturer and model # of the device you are trying to
crack?
150M Wireless-N ADSL2+ Router
5. What is the entire command line string you are supplying to reaver?
reaver -i mon0 -b bssid -vv
6. Please describe what you think the issue is.
may be AP is using mac or ip filtering.

7. Paste the output from Reaver below.

failed to associated with xx:xx:xx:xx:xx:xx

when used airodump-ng mon0 ,,i get 

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

 00:1C:A5:36:CC:5B  -66     3631        0    0   1  54e. WPA2 CCMP   PSK  Hawai
 00:1E:B3:05:5A:7E  -79     5954        0    0   4  54e. WPA2 CCMP   PSK  Jack
 00:19:C6:8D:9B:20  -88      512        0    0  11  54   OPN              ZXDSL

 BSSID              STATION            PWR   Rate    Lost    Frames  Probe     

 (not associated)   00:22:69:0E:1D:B3  -89    0 -12      0       15             
 (not associated)   00:26:82:8E:D4:61  -83    0 -12      0        9            

 I used reaver 1.4 and reaver 1.3 both and it nevers associates with the APs.
Earlier I cracked the same APs, but i think now they have enabled some filters 
on AP.
I even used mac spoofing, but it does not work may be because i did'nt get any 
associated clients with AP. 
I used wash -i mon0 -C and it shows the above two APs.
Does reaver works if DHCP is disabled, or if there is IP filtering enabled.
how to know the ip address of associated clients.
why i am getting "not associated clients", if all clients use static ip 
addreress will i always get not associated clients.???
Please help me i had spend 10 days on this and got nothing.

Original issue reported on code.google.com by toshu...@gmail.com on 8 May 2012 at 12:04

[GoogleCodeExporter]

use this comand if the ap si hawai first befor starting reaver and let it run 
in bacground as long as u use reaver .

airodump-ng -c 1 --bssid 00:1C:A5:36:CC:5B mon0

Original comment by danmiclo...@gmail.com on 12 May 2012 at 11:38

[GoogleCodeExporter]

thanks for replying, btw i used that command before starting the reaver, and 
the output was pasted above.

Original comment by toshu...@gmail.com on 12 May 2012 at 2:50