> net.conf is for scanner shared with SANE's protocol. Notice the "hpaio:" > fake URL protocol.
That's the kind of reason why I don't like using printer's own network facilities and prefer to connect them over USB to a local GNU/Linux server which can then share them over CUPS&SANE. It also has the side benefit that sleeping while connected via USB tends to consume significantly less power than sleeping while connected via the wifi network (can't remember what the numbers look like for ethernet). The difference can be sufficient to power a BananaPi ;-) Stefan