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request loop back in the access file

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hi 
i have some problem with squid cache server
the problem is the requests are looped inside the access.log
file when i activate squid server, the server was working
normally in the last days, this day i noticed a slow
performance in web browsing when i checked the cache.log no
error or any warning is logged, only a few queue congestion
warning which is normally because it's test server and the
cache dir is in the same sata hard drive, but checking the
access.log file it's logs so many repeated requests as shown
 
1330586819.008      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.016      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.016      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.024      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.024      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.032      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.033      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.041      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.041      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.049      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.049      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.057      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.058      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.066      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.066      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.074      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.074      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.083      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.083      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.091      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.091      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.099      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.099      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.107      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.107      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.115      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.115      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.124      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.124      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.132      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.132      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.141      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.141      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.149      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.149      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.157      1 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
1330586819.157      0 192.168.40.1
TCP_HIT/302 972 GET http://o-o.preferred.fra02s05.v24.lscache1.c.youtube.com/videoplayback?
- NONE/- text/html
 
this is just sample of the access.log file, these requests
are infinite, now when i activate the cache server these
request are increased abnormally, the server is configured
in intercept mode, when i connect to the server using manual
configuration in the web browser (intercept mode disabled)
the cache server work normally, so i thing it's iptables
rules problem my iptables rule are 
first rule, for destination nat to convert traffic to port
3128
iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT
--to-destination 192.168.40.2:3128
and the second rule is for preventing forwarding loops in
mangle table 
iptables -t mangle -A PREROUTING -p tcp --dport 3128 -j
DROP
 
i have one interface to the internet and to the clients
using mikrotik dnat rule , so i don't need for MASQUERADE ,
and my default policy in the iptables tables is ACCEPT,
i have a videocache pliguns to cache youtube videos,
my squid is 3.1 and OS is ubuntu server
 
thanks with my best regards
   
 



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