MPPE_BITS
if ((cfg->bits & MPPE_BITS) != 0)
if ((cfg->bits & MPPE_BITS) != 0) {
if ((d->cfg.bits & MPPE_BITS) != 0) {
if ((d->cfg.bits & MPPE_BITS) != 0) {
if ((d->cfg.bits & MPPE_BITS) == 0) {
if ((d->cfg.bits & MPPE_BITS) != 0) {