[IPV6] NDISC: Search subtrees when backtracking on receipt of redirects.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Acked-by: Ville Nuorvala <vnuorval@tcs.hut.fi
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 10 deletions

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index bd4cf175ff10..fd626d420cd1 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1332,17 +1332,10 @@ restart:
                 break;
         }
 
-        if (!rt) {
-                if (rt6_need_strict(&fl->fl6_dst)) {
-                        while ((fn = fn->parent) != NULL) {
-                                if (fn->fn_flags & RTN_ROOT)
-                                        break;
-                                if (fn->fn_flags & RTN_RTINFO)
-                                        goto restart;
-                        }
-                }
+        if (!rt)
                 rt = &ip6_null_entry;
-        }
+        BACKTRACK(&fl->fl6_src);
+out:
         dst_hold(&rt->u.dst);
 
         read_unlock_bh(&table->tb6_lock);