[Winpcap-users] Sending raw packets through libpcap for VPNimplementation

[Gianluca Varenni]

The task is not easy, expecially considering the fact that on Windows 
wireless cards are emulated as normal ethernet cards.

I would investigate if there is some way to use sockets to send raw IP 
frames.

Hope it helps
GV

----- Original Message ----- 
From: "Никита Лесников" <nlo_one at mail.ru>
To: <winpcap-users at winpcap.org>
Sent: Wednesday, August 22, 2007 2:19 PM
Subject: [Winpcap-users] Sending raw packets through libpcap for 
VPNimplementation


>
> Hello everyone,
>
> In my application I need to send an IP packet to a _specific_ network 
> interface. The solution has to be highly portable between Linux and 
> Windows at least, and Mac OS X in the distant perspective, so I naturally 
> tried to adopt pcap_sendpacket(...). However, it requires a packet in 
> Layer-2 representation. This is bearable in case of Ethernet, where the 
> additional burden is to do some ARPing and form a very simple Ethernet 
> header, but in case of 802.11b the protocol becomes very complex, and 
> reimplementing it seems a paramount task for me. And the very idea of 
> having special code for each datalink seems not very portability-friendly.
>
> So, is there a workaround for this (or maybe some ready code for 802.11b 
> case),  that can help to solve the declared task?
>
> I will greatly appreciate any help.
>
> Regards,
>  Nikita Lesnikov
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