BR_NEIGH_VLAN_SUPPRESS
if (READ_ONCE(p->flags) & (BR_NEIGH_SUPPRESS | BR_NEIGH_VLAN_SUPPRESS)) {
if (mask & (BR_NEIGH_SUPPRESS | BR_NEIGH_VLAN_SUPPRESS))
!!(flags & BR_NEIGH_VLAN_SUPPRESS)) ||
BR_NEIGH_VLAN_SUPPRESS);