attach_tunname
msg->spd_msg_len += attach_tunname((spd_if_t *)(msg + 1));
msg->spd_msg_len += attach_tunname((spd_if_t *)(rule + 1));
msg->spd_msg_len += attach_tunname((spd_if_t *)(msg + 1));
(void) attach_tunname((spd_if_t *)(msg + 1));
static int attach_tunname(spd_if_t *);