RE: duplicate packet

["Darden, Patrick S." <darden () armc org>]

Check your ARP tables, local and on intervening switches/routers.  Make sure there are no duplicate entries for that 
IP.  If you note the response time, the second packet is always higher which might be indicative.  I would also check 
for a botched MITM a la C&A.

Even if there is no obvious ARP table manglement, you might try flushing the local and intervening caches.

Try the ping from another host, another subnet, another segment, get more info.

--p

-----Original Message-----
From: chloe K [mailto:chloekcy2000 () yahoo ca]
Sent: Wednesday, September 10, 2008 6:46 AM
To: nanog () nanog org
Subject: duplicate packet 


Hi all

When I ping the ip, I get the duplicate 

I check the ip is just one. Why it happens?

Thank you

64 bytes from 192.168.0.95: icmp_seq=1 ttl=63 time=0.344 ms
64 bytes from 192.168.0.95: icmp_seq=1 ttl=63 time=0.401 ms (DUP!)
64 bytes from 192.168.0.95: icmp_seq=2 ttl=63 time=0.296 ms
64 bytes from 192.168.0.95: icmp_seq=2 ttl=63 time=0.328 ms (DUP!)
64 bytes from 192.168.0.95: icmp_seq=3 ttl=63 time=0.291 ms
64 bytes from 192.168.0.95: icmp_seq=3 ttl=63 time=0.316 ms (DUP!)
64 bytes from 192.168.0.95: icmp_seq=4 ttl=63 time=0.279 ms
64 bytes from 192.168.0.95: icmp_seq=4 ttl=63 time=0.309 ms (DUP!)
64 bytes from 192.168.0.95: icmp_seq=5 ttl=63 time=0.271 ms
64 bytes from 192.168.0.95: icmp_seq=5 ttl=63 time=0.299 ms (DUP!)

       
 
              
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