memset(&fl, 0x0, sizeof(struct flowi));
        fl.fl4_dst  = daddr->v4.sin_addr.s_addr;
+       fl.fl_ip_dport = daddr->v4.sin_port;
        fl.proto = IPPROTO_SCTP;
        if (asoc) {
                fl.fl4_tos = RT_CONN_FLAGS(asoc->base.sk);
                fl.oif = asoc->base.sk->sk_bound_dev_if;
+               fl.fl_ip_sport = htons(asoc->base.bind_addr.port);
        }
-       if (saddr)
+       if (saddr) {
                fl.fl4_src = saddr->v4.sin_addr.s_addr;
+               fl.fl_ip_sport = saddr->v4.sin_port;
+       }
 
        SCTP_DEBUG_PRINTK("%s: DST:%pI4, SRC:%pI4 - ",
                          __func__, &fl.fl4_dst, &fl.fl4_src);
                if ((laddr->state == SCTP_ADDR_SRC) &&
                    (AF_INET == laddr->a.sa.sa_family)) {
                        fl.fl4_src = laddr->a.v4.sin_addr.s_addr;
+                       fl.fl_ip_sport = laddr->a.v4.sin_port;
                        if (!ip_route_output_key(&init_net, &rt, &fl)) {
                                dst = &rt->u.dst;
                                goto out_unlock;