David S. Miller 1018b5c016 ipv4: Set rt->rt_iif more sanely on output routes.
rt->rt_iif is only ever inspected on input routes, for example DCCP
uses this to populate a route lookup flow key when generating replies
to another packet.

Therefore, setting it to anything other than zero on output routes
makes no sense.

Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-04 21:35:25 -08:00
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