On Tue, 2005-04-05 at 08:00 -0700, Casey Schaufler wrote: > But you don't know how much to copy. If you > decide on a fixed amount you may as well use > the previously discussed structure. I think that this is just a communication problem between you and me; the program knows the total length of the buffer, and passes it to the sendto() call when sending the buffer to the netlink socket.