Check routes with equal prefix if preferred source is specified

diff --git a/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c b/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c
index 73d7ed2c923dd3cd82ce923f37c7d429f85c6561..9d82a4e89c24e713ef9e5302f215144fd85a5ac9 100644 (file)
--- a/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c
+++ b/src/libhydra/plugins/kernel_netlink/kernel_netlink_net.c
@@ -1236,8 +1236,10 @@ static host_t *get_route(private_kernel_netlink_net_t *this, host_t *dest,
                                        }
                                        rta = RTA_NEXT(rta, rtasize);
                                }
-                               if (msg->rtm_dst_len <= best)
-                               {       /* not better than a previous one */
+                               if (msg->rtm_dst_len < best ||
+                                       msg->rtm_dst_len == best && (nexthop || !candidate))
+                               {       /* not better than a previous one, but if a preferred source
+                                        * address is specified, we still check equal routes */
                                        continue;
                                }
                                enumerator = this->rt_exclude->create_enumerator(this->rt_exclude);