DHCP_OPT_META_LEN
if (iap->ia_request->data_length <= DHCP_OPT_META_LEN) {
} else if (iap->ia_request->data_length - DHCP_OPT_META_LEN
if ((opt = malloc(dsmp->dsm_cidlen + DHCP_OPT_META_LEN))
opt = malloc(optnum.size + DHCP_OPT_META_LEN);
DHCP_OPT_META_LEN;
req_len = opt_len + DHCP_OPT_META_LEN;
valptr = (uchar_t *)opt + DHCP_OPT_META_LEN;