[Simh] EXT :Re: winpcap problem

[Hittner, David T [US] (MS)]

Due to subtle differences in Windows drivers, sometimes WinPcap can't see a NIC unless it has an IP address assigned to it (or some other protocol - that is, that the NIC should appear to be "active" to the host). Also, certain version of WinPcap had issues adding NICs, and the solution was to remove WinPcap and re-install it to allow the installation procedure to generate the correct registry entries for the new NIC during the installation. Note that depending upon the Windows driver, sometimes the NIC had to be "active" before the WinPcap installation procedure could see the NIC to generate the correct registry entries.

WinPcap has very limited support for a long time, and suggests use of the NPcap product in this post from the WinPcap home page (https://www.winpcap.org/):


15 September 2018

WinPcap, though still available for download (v4.1.3), has not seen an upgrade in many years and there are no road map/future plans to update the technology. While community support may persist, technical oversight by Riverbed staff, responses to questions posed by Riverbed resources, and bug reporting are no longer available.
Gordon Lyon, Nmap project founder, has created Npcap, a packet capture library for Windows, that includes WinPcap compatibility and may be a suitable replacement for WinPcap and WinPcap Pro. Information can be found at https://nmap.org/npcap/.


-----Original Message-----
From: Simh [mailto:simh-bounces at trailing-edge.com] On Behalf Of gérard Calliet
Sent: Thursday, April 11, 2019 5:15 AM
To: simh at trailing-edge.com
Subject: EXT :Re: [Simh] winpcap problem

Hello,

I used the recommended tool windump -D and it doesn't see the new NICs. 
So it is a pure problem of compatibility between Winpcap and the new NICs.

Did anyone see a similar problem? Are there somewhere WinPcap gurus?

Gérard Calliet


Le 11/04/2019 à 09:42, gérard Calliet a écrit :
> Hello,
>
> I tried a reboot of the host. Same problem. Is it possible there are 
> NICs not compatible with WinPcap? or some bizarre configuration to do 
> on the NIC?
>
> Gérard Calliet
>
> Le 05/04/2019 à 02:19, Mark Pizzolato a écrit :
>> On Tuesday, April 2, 2019 at 1:42 PM, gérard Calliet wrote:
>>> I have some trouble using winpcap (on windows) with simh.
>>>
>>> I added a NIC (intel ethernet server adapter i350-t2), I can see it 
>>> on the windows configuration panel, but I don't see it using simh 
>>> "sho eth"
>>> command, which uses winpcap (version 4.1.3). The other NICs are seen 
>>> by the same command.
>>>
>>> Any help?
>> Winpcap has a problem with detecting newly installed network devices 
>> that weren't present when the system was booted.  Try rebooting the 
>> system and see if you continue to see the same problem.
>>
>> - Mark
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