OACK
case OACK: {
if (recv_extra.rtype == OACK)
if ((count == 0) && (ap->th_opcode == OACK)) {
if ((block == 1) && (dp->th_opcode == OACK)) {
if (op < RRQ || op > OACK)
case OACK:
oackp->th_opcode = htons((ushort_t)OACK);
case OACK:
case OACK:
case OACK: return ("option acknowledgement");
case OACK: