Hi all,I would look at what the ISC DHCP server does, but i'm not sure you will see broadcast traffic from machines in a different network segment, since routers do not generally forward broadcasts.
is there any possibility to read the hardware address (MAC) of the remote machine from received PF_INET/SOCK_DGRAM packets?
I want to write an application which opens a datagram socket, binds it to a specific port and receives broadcast messages. The sending machine is not necessarily in the same net segment. It is of course easy to get the remote ip address, but I also need the in the information in the packet header, in particular the 6-byte hardware (MAC) address of the sending machine. Apparently /proc/net/arp does not contain any information extracted from such packets.
Any idea how I could get this information? Any pointer/example?
Thanks in advance