netbsd@precedence.co.uk said:
> I've had a couple of aue testers look at this and the device class for
> a  genuine aue is UDCLASS_IN_INTERFACE

So if it is always UDCLASS_IN_INTERFACE we don't need to
check for it... Otherwise your patch is fine, we should
make the check in if_aue as strict as reasonably possible.
Would still be good if you or someone else could provide
some more descriptor data. The easiest way is to build
sysutils/usbutil from pkgsrc and call
usbctl /dev/usb0 -a 2
(The arguments in my example refer to your initial mail,
modify as necessary.)

best regards
Matthias