run "create table t {...} auto_increment=1000" success, but didn't take affect actually

>>>CREATE TABLE t (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`user_id` bigint(20) unsigned NOT NULL DEFAULT '0',
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1000 DEFAULT CHARSET=utf8mb4

>>>show create table t;
--------------------------------------------------------------------+

the "AUTO_INCREMENT=1000" didn't take affect.