ipv6: Use icmpv6_notify() to propagate redirect, instead of rt6_redirect().

And delete rt6_redirect(), since it is no longer used.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index b8d53e1..ff36194 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1350,7 +1350,7 @@
 		return;
 	}
 
-	rt6_redirect(skb);
+	icmpv6_notify(skb, NDISC_REDIRECT, 0, 0);
 }
 
 void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)