EML has been on for about 2 years now

Are driveshafts supposed to have any movement in them? Trying to investigate a front end knock, jacked the car up, couldn't find any knoocking or looseness in the wishbones but then again, I'm a puff and not sure how hard you need to shake them, grabbed the drop links and theres no movement in them either. But when I grabbed both driveshafts theres about 1-2ml in and out movement in both of them? Is this normal?