[Winpcap-bugs] winpcap fails to detect usb network device afterdriver update

Gianluca Varenni gianluca.varenni at cacetech.com
Mon Mar 8 08:44:15 PST 2010


--------------------------------------------------
From: "Gur Stavi" <gur.stavi at gmail.com>
Sent: Saturday, March 06, 2010 12:33 PM
To: <winpcap-bugs at winpcap.org>
Subject: [Winpcap-bugs] winpcap fails to detect usb network device 
afterdriver update

> Hello,
>
> I reported the bug below to the wireshark team. They responded by saying
> it seems like a WinPcap issue.
>
> I didn't use wireshark lately but a colleague of mine encountered the
> same issue and reinstalling worked for him as well. If I encounter it
> again I will try to provide data from WinDump as you request.

It is a known limitation of the WinPcap protocol driver, it detects the 
lists of adapters only when it's loaded (i.e. with WinPcap 4.1.1 at boot 
time), if you plug an adapter after that, it doesn't get detected until your 
reboot the machine or unload/load the WinPcap protocol.

You can unload/load the WinPcap driver on the command line by typing "net 
stop npf" followed by "net start npf".

Let me know if this works for you.

Have a nice day
GV

>
>
> Thanks,
>
> Gur
>
>
> https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4372
>
> I develop drivers for USB devices that expose network interface.
> Often after I install a new device or update the driver and launch 
> WireShark it
> fails to detect the device.
>
> If I uninstall WireShark and then install it again it detects the device
> correctly.
>
> I am new to WireShark.
>
> If there is any kind of log that you would like me to add let me know 
> where to
> get it from and I will attach it.
>
> Regards,
> Gur
>
>
>
>
>
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> Winpcap-bugs at winpcap.org
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