ipv4: ip_forward: perform skb->pkt_type check at the beginning
Packets which have L2 address different from ours should be already filtered before entering into ip_forward(). Perform that check at the beginning to avoid processing such packets. Signed-off-by: NDenis Kirjanov <kda@linux-powerpc.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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