This reverts commit 46a811db. It causes
random problems in OpenStack, which displays the following error:

"""
error : virNWFilterObjAssignDef:3075 : operation failed: filter
'nova-no-nd-reflection' already exists with uuid
ef783c9f-ae1c-4242-8cd5-9cef5ec4fa7a
"""

Special thanks to Vojtech Cima for investigating.