pf_udp_mapping_insert
extern int pf_udp_mapping_insert(struct pf_udp_mapping
if (pf_udp_mapping_insert(*udp_mapping) == 0) {
if (pf_udp_mapping_insert(*udp_mapping) == 0) {
if (pf_udp_mapping_insert(*udp_mapping) == 0) {
if (pf_udp_mapping_insert(*udp_mapping) == 0) {