result = utun_detach_ip(interface, protocol, pf_socket);
if (result == 0 || result == ENXIO) {
/* We are done! We either detached or weren't attached. */
result = utun_detach_ip(interface, protocol, pf_socket);
if (result == 0 || result == ENXIO) {
/* We are done! We either detached or weren't attached. */
// remove protocol family first
mbuf_adj(m, sizeof(u_int32_t));
// remove protocol family first
mbuf_adj(m, sizeof(u_int32_t));