net: ipv6: fallback to full lookup if table lookup is unsuitable

[cascardo/linux.git] / net / ipv6 / route.c

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 4981755..e3a224b 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1986,9 +1986,18 @@ static struct rt6_info *ip6_route_info_create(struct fib6_config *cfg)
                        if (!(gwa_type & IPV6_ADDR_UNICAST))
                                goto out;
 
-                       if (cfg->fc_table)
+                       if (cfg->fc_table) {
                                grt = ip6_nh_lookup_table(net, cfg, gw_addr);
 
+                               if (grt) {
+                                       if (grt->rt6i_flags & RTF_GATEWAY ||
+                                           (dev && dev != grt->dst.dev)) {
+                                               ip6_rt_put(grt);
+                                               grt = NULL;
+                                       }
+                               }
+                       }
+
                        if (!grt)
                                grt = rt6_lookup(net, gw_addr, NULL,
                                                 cfg->fc_ifindex, 1);