I think Bob Law at A-B once compared the 1771-SDNPT passthrough driver to "building a house by mailing yourself bricks".
I agree that a direct interface to the DeviceNet is better; 1770-KFD or 1784-U2DN, or a bridged connection from a 1756-DNB if you have one around.
Yesterday I configured Netflix on my in-laws' Smart TV, using a very strong password. A similar degree of patience was necessary.