Do you have a VPN or other virtual adapters enabled on the machine? If so, you may be seeing a known Microsoft NDIS bug which causes this behavior on Windows 2000.
My understanding is that the only work around is to temporarily disable the VPN and possibly other virtual adapters you have installed on that machine.
Note that this is a Microsoft bug, which is why you would be seeing it even when using different capture utilities.
Regards,
--PJ
At 01:53 PM 11/21/02, you wrote:
Hi all, For some reasons, when I use a sniffer tool to capture the network traffic on my machine (win2k server), I always saw twice for every packet sending from the local machine. Two packets are almost identical except their timestamps are different. I used many different sniffer tools (like tcpdump, ethereal, sniffer basic 4.5), I still saw the same problem. It happens only to the traffic orginated from the local machine, not to those that come from the other machines in the local network. I can see this problem only when I run the sniffer program on the local machine. If I run it on a different machine and capture traffic comming from my machine, I don't see the problem. So it looks like the duplicated packet doesn't go on the network, otherwise I would see two of them. It's just somehow reported twice.. Does anyone know what wrong with my machine? Thanks for your help.-hn __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus � Powerful. Affordable. Sign up now. http://mailplus.yahoo.com ================================================================== This is the WinPcap users list. It is archived at http://www.mail-archive.com/[email protected]/ To unsubscribe use mailto: [EMAIL PROTECTED]?body=unsubscribe ==================================================================
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