Hi, I need to get Mac Address from the data package in the network. I'm using synapse.
I´m doing an application acting as a UDP Server. Then, there are some machines connecting to that server and send some packages…Is it possible to figure out the Mac Address from these incoming packages? I could send a ARP resolution to do this, but there are some case (start situation) that I have some machines with the same IP. 
I also work with PIC microcontroller and there I can do this, but I couldn´t find a way to this on the PC.
Any trip, tip or clue are very welcome.

Filipe wrote:

> Hi, I need to get Mac Address from the data package in the network.

Why?  Socket code should not care about MACs, only IPs.

> I´m doing an application acting as a UDP Server. Then, there are some
> machines connecting to that server and send some packages…Is it
> possible to figure out the Mac Address from these incoming packages?

UDP sockets do not expose that information.  If you absolutely need access 
to the MAC of an inbound packet, you need access to the packet's ethernet 
header.  You would have to either use a packet sniffing library, such as 
libpcap, or else use a RAW socket (which requires admin rights) instead of 
a UDP socket.

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Remy Lebeau (TeamB)