howto setup a route by netlink socket

["C.J" <c.james.cj@gmail.com>]

Hi list,

I want to set a route by netlink socket but I've no idea how to do it clearly.

Here I've make up a virtual interface that is ppp0 by ioctl, we want to it could communicate with peer side.
We need just a route, right?  Netlink can do this. As there are many attributes , we need tell kernel what's our route.
But I'm not sure what we should build as attributes that we will send to kernel.

Now I get a simple talk, it contains 2 attrs follow 'rtmsg' structure. 
 RTA_DST, 192.168.1.1 -- the peer IP
 RTA_SRC, 192.168.1.2 -- our local IP
And it cannot work, kernel return [No such Device] error.
I think there are something I lost, pls help me and point out the errors.

Reg


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c.j