cls_rule_set_dl_type(&rule, htons(ETH_TYPE_IP));
cls_rule_set_dl_src(&rule, ib->local_mac);
cls_rule_set_nw_proto(&rule, IPPROTO_UDP);
cls_rule_set_dl_type(&rule, htons(ETH_TYPE_IP));
cls_rule_set_dl_src(&rule, ib->local_mac);
cls_rule_set_nw_proto(&rule, IPPROTO_UDP);