mi_open_link
err = mi_open_link(&ipst->ips_ip_g_head, (IDP)q->q_ptr, devp, flag,
err = mi_open_link(&ipst->ips_arp_g_head, (IDP)q->q_ptr, devp, flag,
error = mi_open_link(mi_headp, ptr, devp, flag, sflag, credp);
extern int mi_open_link(void **mi_head, IDP ptr, dev_t *devp, int flag,