def METHOD_NAME(pre_mods, post_mods):
    """
    Return a list of the new modules, pass an kldstat dict before running
    modprobe and one after modprobe has run
    """
    pre = set()
    post = set()
    for mod in pre_mods:
        pre.add(mod["module"])
    for mod in post_mods:
        post.add(mod["module"])
    return pre - post