How to find the correct source address to a destination in a kernel driver?

[Stephan von Krawczynski]

Hello all,

in former kernels with routing cache things were easy. We just used :

        rt = ip_route_output_key(XXX)
        src = rt->rt_src;

Now if there is no routing cache, we tried this:

        rt = ip_route_output_key(XXX)
        src = inet_select_addr(rt->dst.dev, dst, RT_SCOPE_UNIVERSE);

Unfortunately this does not work with interfaces having multiple ip addresses
and the routing in question is not over the first configured ip.
How do I get the correct src for all possible cases?

-- 
Regards,
Stephan
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