Taunt without triggering cooldown (Monk)

We just found out, that if you use Provoke  while walking in range of your target (hit provoke slightly before you get in range), you´ll taunt the target, without triggering the CD on Provoke

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Tried with Monk, Dk and Warrior, but it just worked with Monk´s Provoke.

Hope this isn´t a repost, couldn´t find anything similar with the search-function.