The latest USBNet (1.x) don't create ANY usbnet folder on root partition.
Anyways the \usbnet\* doesn't look like Linux path..
If I search for dropbear, I find dropbear executable in /usr/local/sbin/ and dropbear folder in /usr/local/etc
Putting authorized_keys in any of them doesn't make it work.
So the question is quite reasonable here. How to make it work on current USBNet on Kindle.