[Winpcap-users] Multicast packets with TTL=0 reception problem under Windows Seven

[Alberto Avanzi]

  Just to confirm that it doesn't come from our (receiving) code (from 
our sending code maybe ?):

even the WinPCap 4.1.2 "UDPDump" provided example fails to retrieve 
these packets.

A.

On 01/09/2010 11:09, Alberto Avanzi wrote:
> Hi,
>
> our multicast-receiving application is based, since some years, on 
> WinPCap.
>
> We use it under Windows XP and Windows Server 2003, and it works well 
> for receiving multicast
> packets independently from their TTL (0, 1 or 2) (with WinPCap 4.0.2).
>
> The same application running on Seven (with WinPCap 4.1.2) is unable 
> to receive packets with TTL = 0
> (sent by another application on the same machine). It is clearly a 
> reception problem, because if we use
> standard socket code for receiving packets, we get them.
> If we set the TTL=1, we receive the packets.
>
> Any idea ?
> Should we modify something in our code in order to get them again ?
>
> Thanks a lot,
> Alberto.
>
>
>
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