Fwd: Possible bug in tcptrace??

From: Abhijeet Bisain (abisain@qualcomm.com)
Date: 09/03/02

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    Message-Id: <5.1.0.14.2.20020903190121.0298ef68@mage.qualcomm.com>
    Date: Tue, 03 Sep 2002 19:02:04 -0700
    From: Abhijeet Bisain <abisain@qualcomm.com>
    Subject: Fwd: Possible bug in tcptrace??
    
    
    

    >Hi,
    >
    > I have been using tcptrace for a while and have not seen this,
    > but recently, in one my tcpdump files, I see a weird behavior. I see the
    > ack line ( green) going down and then going back up. I can't understand
    > why this will happen. Can somebody take a look at the image of that
    > portion of the plot and try to explain? I can send out the dump file if needed.
    >
    > The dumpfile was obtained on a redhat 7.2 machine using
    > tcpdump. Is it possible that this is because of out of sequence ack packets?
    >
    >Abhijeet

    
    

    ack_going_down.jpg
    
    

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