[Winpcap-users] Winpcap problem with Multicast address

[Gianluca Varenni]

The only idea that comes to my mind is that an intermediate driver is 
sending those packets, so WinPcap (which sits at the top of the protocol 
stack) doesn't see them. But I might be completely wrong.

Does the problem happen on a specific machine with a specific network card 
or on all the machines you have?

Have a nice day
GV

----- Original Message ----- 
From: "Gerhard Wiesinger" <lists at wiesinger.com>
To: <winpcap-users at winpcap.org>
Sent: Tuesday, January 02, 2007 4:04 AM
Subject: [Winpcap-users] Winpcap problem with Multicast address


> Hello!
>
> I'm running wireshark 0.99.4 with winpcap 4.0beta3 and I don't see any 
> multicast packets sent (Broadcom NetXtreme Gigabit network card) running 
> in promiscuous mode or not running in promiscuous mode.
>
> Broadcast address is:
> 239.255.255.250, MAC is 01:00:5e:7f:xx:xx
>
> On another computer on the same LAN I see the packets without any problems 
> (from the correct MAC address). So the must be sent out from the first 
> computer running wireshark, which doesn't see the packets.
>
> Also Windump doesn't see the packets.
>
> Packets are SSDP/UPnP NOTIFY request.
>
> Any ideas?
>
> Thanks.
>
> Ciao,
> Gerhard
>
> --
> http://www.wiesinger.com/
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