int lb_vip_add_ass(u32 vip_index, ip46_address_t *addresses, u32 n);
int lb_vip_del_ass(u32 vip_index, ip46_address_t *addresses, u32 n, u8 flush);
int lb_vip_add_ass(u32 vip_index, ip46_address_t *addresses, u32 n);
int lb_vip_del_ass(u32 vip_index, ip46_address_t *addresses, u32 n, u8 flush);