NPMODE_DROP
!sifnpmode(0, protp->protocol & ~0x8000, NPMODE_DROP))
{ NPMODE_DROP, "drop" },
npmode == NPMODE_DROP || npmode == NPMODE_ERROR) {
if (npmode == NPMODE_DROP) {
sps->sps_npmode = NPMODE_DROP;
sps->sps_npmode = NPMODE_DROP; /* drop all packets initially */
sib->sps_npmode = NPMODE_DROP;