VSW_IF_UP
vswp->if_state &= ~(VSW_IF_UP | VSW_IF_REG);
vswp->if_state &= ~VSW_IF_UP;
vswp->if_state |= VSW_IF_UP;
if (vswp->if_state & VSW_IF_UP) {
if (vswp->if_state & VSW_IF_UP) {
if (vswp->if_state & VSW_IF_UP) {
if (!(vswp->if_state & VSW_IF_UP)) {
if (vswp->if_state & VSW_IF_UP) {
if (vswp->if_state & VSW_IF_UP) {
if (vswp->if_state & VSW_IF_UP) {
(state == (VSW_IF_UP | VSW_IF_PROMISC))