rn_key
rn_delete(rn->rn_key, rn->rn_mask, rnh, NULL);
ttt->rn_key = rn_ones;
netmask = tm->rn_key;
char *cp2 = leaf->rn_key;
cp2 = t->rn_key + off;
tt->rn_key = v;
cp2 = t->rn_key + off;
if (memcmp(addmask_key, tm->rn_key, mlen) != 0)
tt->rn_key = v_arg;
tt->rn_mask = tm->rn_key;
if (memcmp(v + off, tt->rn_key + off, vlen - off))
netmask = tm->rn_key;