Is this article in the wiki missing?How can this be done?

Either use SFQ and trust that algorithm, or - if you need per user rate limits capped - use PCQ with a max-limit on the queue that implements the PCQ type.

Thanx fewi. Is this going to limit local traffic?

Depends on what you mean by "local traffic". Routers/bridges can only rate limit traffic that go across them. Same subnet traffic typically doesn't, so it is exempt by design.
Also, SFQ and PCQ queue types are queue trees, which can fire on packet marks. Marks are manually applied in the mangle facilities, giving you full control over what you do or don't mark.