Moving both eyes

Please Help,
I’ve duplicated my right eyeball to my left eyeball.
Using Alt-D.
If I size one, the other follows.
Works fine because theyare linked.
I set up a simple rotation IPO for one eyeball.
The linked other eyeball doesn’t follow the IPO .
Question: How do I make both eyeballs follow the IPO.


Link the IPO to both object.
Select both objects, making sure the one with the IPO is the active object (bright pink in wire mode)
Ctrl-L -> Object IPO

Thanks again Theeth
Worked fine.