VF_CFG_VLAN_FILTER
if (vlan || !(vf->cfg_flags & VF_CFG_VLAN_FILTER))
vf->cfg_flags |= VF_CFG_VLAN_FILTER;
vf->cfg_flags &= ~VF_CFG_VLAN_FILTER;
(!(vf->cfg_flags & VF_CFG_VLAN_FILTER) ||