#define lb_vip_get_by_index(index) (pool_is_free_index(lb_main.vips, index)?NULL:pool_elt_at_index(lb_main.vips, index))
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);
+int lb_vip_del_ass(u32 vip_index, ip46_address_t *addresses, u32 n, u8 flush);
u32 lb_hash_time_now(vlib_main_t * vm);