Q: Extract hardware address from received datagram?
From: Albrecht Dreß
Date: Sun Aug 14 2005 - 08:39:59 EST
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
Albrecht Dreß - Johanna-Kirchner-Straße 13 - D-53123 Bonn (Germany)
Phone (+49) 228 6199571 - mailto:albrecht.dress@xxxxxxxx
GnuPG public key: http://home.arcor.de/dralbrecht.dress/pubkey.asc
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