Nmap Development mailing list archives

Re: npcap causing no network connectivity for a minute or two after boot on Win 7 32


From: 食肉大灰兔V5 <hsluoyz () gmail com>
Date: Wed, 7 Sep 2016 08:24:52 +0800

Hi Michael,

Thanks for reporting this. Please install the latest Npcap 0.09 r3, and
provide your DiagReport output, install.log and setupapi.dev.log. They are
described here:
https://htmlpreview.github.io/?https://github.com/nmap/npcap/blob/master/docs/npcap-guide-wrapper.html#npcap-issues


Cheers,
Yang

On Tue, Sep 6, 2016 at 9:39 PM, Michael D. Lawler <mdlawler () lawlers us>
wrote:

If I use npcap 0.8-R9 everything works fine.  Versions 0.08-R10 through
0.09-R3 have the problem.  The problem happens whether or not I set the
npcap driver to load at boot or not.  When I use the problematic versions
and boot I have no network connectivity for a minute or two (I haven't
timed it down to the second) and then network connectivity just starts
working on it's own.  If I set the driver not to start at boot and then
once the system boots I do

net start npcap

The driver starts, but connectivity still is not available.  If I
uninstall npcap while there is no connectivity then connectivity returns
immediately upon the uninstall.  My guess is that something changed between
0.08-R9 and 0.08-R10 in the way the driver is registered in the registry
that is causing my problem, but I don't know where to look further.

--
Michael D. Lawler
email mailto:mdlawler () lawlers us

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