MBR_JOINED
if (state == MBR_JOINED && adv == ADV_IDLE)
case MBR_JOINED:
pm->state = MBR_JOINED;
m->state = MBR_JOINED;
else if (m->state == MBR_JOINED || m->state == MBR_PENDING)
m->state = MBR_JOINED;
m->state = MBR_JOINED;
m->state = MBR_JOINED;