Animation not playing for networked character

I have a simple script that works like this:

 CharacterController cc = GetComponent<CharacterController>();
         
 if(cc.velocity != Vector3.zero)
 {
     animation.Play("f_walk");
 }
 else
 {
     animation.Stop("f_walk");
 }

This works fine for the local player, but does not work for networked player objects. What could be the problem here?