[Simh] EXT :Re: winpcap problem

[Mark Pizzolato]

Hi Gérard,

Everything Dave said is true, AND part of the issue may be a need to configure 
some details about the new NIC you've just installed.  Specifically, you say it 
is a server NIC and may include specific awareness of (and need configuration 
details for) VLANs.   Configuring this is likely also necessary to get an IP address 
on the interface.  Once useful LAN packets can be transmitted and received 
by the host OS, that interface can be used by simh via WinPcap Or Npcap.  
Once you know the host can use the interface.

Aside from this, on Windows, there is absolutely no need for simh simulators 
to have dedicated network interfaces.  The host system's primary interface can
readily be used by simh to communicate both with other external systems AND 
directly with the host system (via IP).  You should start with this and only try
to use a separate NIC if you observe specific problems.

Good Luck,

- Mark

On Thursday, April 11, 2019 at 8:05 AM, David Hittner wrote:
> 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
> > _______________________________________________
> > Simh mailing list
> > Simh at trailing-edge.com
> > http://mailman.trailing-edge.com/mailman/listinfo/simh
> _______________________________________________
> Simh mailing list
> Simh at trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh
> _______________________________________________
> Simh mailing list
> Simh at trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh