Finally stumbled onto PF_PACKET.....
On 2.2 kernels you really want to use PF_PACKET instead of SOCK_PACKET. After
allocating a
PF_PACKET socket, you setup the sockaddr_ll approprately then use sendto(2) to
send the data.. If you use a SOCK_DGRAM then the phyiscal data link headers
are setup for you. Otherwise if using SOCK_RAW you will also need to format
the physical headers (e.g., ETHERNET, IEEE802, etc).
This is all explained better in packet(4)
good luck!
/ron .
JF Omhover wrote:
> Is there a way for an application to write directly to the datalink layer?
>
> I know i can read it with libpcap or SOCK_PACKET but.. how to write?
>
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