reaver fails to determine correct first half of pin despite trying it all.

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

Reaver 1.4 fully uptodate

1. What operating system are you using (Linux is the only supported OS)?
BT 5 R3

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?
-60db

4. What is the manufacturer and model # of the device you are trying to
crack?
huawei 20f3a3 mac modem

5. What is the entire command line string you are supplying to reaver?
reaver -i mon0 -c X -b XXX -d 3 -vv

6. Please describe what you think the issue is.
it cannot find the first half of the pin although it tries all combinations 
from 0000 to 9999 and therefore it gets stuck at 90.90% and at 99985677. This 
actually happened with 3 routers, one is huawei, one is tplink and other one is 
a locally produced brand's modem. routers I tried did no have any AP rate 
limiting. When I try sending the wps pin (I know it already) it recovers the 
PSK.

7. Paste the output from Reaver below.
it says trying pin 99985677, @90.90% percentage complete and this goes on until 
it says 11000 keys tried, failed to find the correct key.

Original issue reported on code.google.com by mertmerc...@gmail.com on 4 May 2013 at 8:29