ipv4: fix address selection in fib_compute_spec_dst

Julian Anastasov · davem330 · commit 0cc535a29916 · 2012-07-19T08:30:49.000-07:00
ip_options_compile can be called for forwarded packets,
make sure the specific-destionation address is a local one as
specified in RFC 1812, 4.2.2.2 Addresses in Options

Signed-off-by: Julian Anastasov &lt;ja@ssi.bg&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
@@ -206,7 +206,8 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
 	int scope;
 
 	rt = skb_rtable(skb);
-	if (!(rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST)))
+	if ((rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST | RTCF_LOCAL)) ==
+	    RTCF_LOCAL)
 		return ip_hdr(skb)->daddr;
 
 	in_dev = __in_dev_get_rcu(dev);
