BIOC_SBUNBLINK
blink = BIOC_SBUNBLINK;
ldp->bling.pdtab[ldp->tgts[pd]] = stat == BIOC_SBUNBLINK? 0 :
case BIOC_SBUNBLINK:
case BIOC_SBUNBLINK:
case BIOC_SBUNBLINK:
case BIOC_SBUNBLINK:
case BIOC_SBUNBLINK: