NEIGH_UPDATE_F_WEAK_OVERRIDE
if ((flags & NEIGH_UPDATE_F_WEAK_OVERRIDE) &&
NEIGH_UPDATE_F_WEAK_OVERRIDE|
NEIGH_UPDATE_F_WEAK_OVERRIDE|
NEIGH_UPDATE_F_WEAK_OVERRIDE|
NEIGH_UPDATE_F_WEAK_OVERRIDE|
NEIGH_UPDATE_F_WEAK_OVERRIDE|