From a0d78ebf3a0e33a1aeacf2fc518ad9273d6a1c2f Mon Sep 17 00:00:00 2001 From: YOSHIFUJI Hideaki Date: Sun, 4 Feb 2007 20:15:04 -0800 Subject: [PATCH] [IPV6] ROUTE: Do not route packets to link-local address on other device. With help from Wei Dong . Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ipv6/route.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index f4fda80a41a2..19c906f6efa1 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -311,12 +311,21 @@ static inline void rt6_probe(struct rt6_info *rt) static int inline rt6_check_dev(struct rt6_info *rt, int oif) { struct net_device *dev = rt->rt6i_dev; - if (!oif || dev->ifindex == oif) + int ret = 0; + + if (!oif) return 2; - if ((dev->flags & IFF_LOOPBACK) && - rt->rt6i_idev && rt->rt6i_idev->dev->ifindex == oif) - return 1; - return 0; + if (dev->flags & IFF_LOOPBACK) { + if (!WARN_ON(rt->rt6i_idev == NULL) && + rt->rt6i_idev->dev->ifindex == oif) + ret = 1; + else + return 0; + } + if (dev->ifindex == oif) + return 2; + + return ret; } static int inline rt6_check_neigh(struct rt6_info *rt) -- 2.20.1