Gnomish/ goblin engineer quest bugged?

Hello,
I tried to learn the gnomish engineer specialisation with my char, and I saw in wowhead that I needed to get a quest in Undercity for it. But when I went to that npc there was no quest for me, so I also went to see if there was a way to see if I had an specialisation, went to Tanaris, and there is a place to change your specialisations there for engineer. But that also didn't work since it seems that I have none. So I'm wondering if the quest is now bugged? or I'm missing something? My engineering is full skilled so that isn't it.
If anyones knows if I'm missing something I would gladly hear it, otherwise I'm not sure if I should post this in the bugtracker, since I see no topic about this...