rn_key
ttt->rn_key = rn_ones;
register char *cp = trial, *cp2 = leaf->rn_key, *cp3 = leaf->rn_mask;
tt->rn_key = (caddr_t)v;
register uint8 *cp2 = t->rn_key + head_off;
netmask = x->rn_key;
cp += off; cp2 = t->rn_key + off; cplim = v + vlen;
if (memcmp(addmask_key, x->rn_key, mlen) != 0)
netmask = x->rn_key;
tt->rn_key = (caddr_t) v;
|| memcmp(v + head_off, tt->rn_key + head_off, vlen - head_off))
netmask = x->rn_key;