[PATCH] net/ipv4: add comment about connect() to INADDR_ANY

[Konstantin Khlebnikov]

Copy comment from net/ipv6/tcp_ipv6.c to help future readers.

Signed-off-by: Konstantin Khlebnikov <koc...@gmail.com>
---
 net/ipv4/route.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index a01efa062f6b..303fe706cbd2 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2591,6 +2591,7 @@ struct rtable *ip_route_output_key_hash_rcu(struct net 
*net, struct flowi4 *fl4,
                }
        }
 
+       /* connect() to INADDR_ANY means loopback (BSD'ism). */
        if (!fl4->daddr) {
                fl4->daddr = fl4->saddr;
                if (!fl4->daddr)