[NiLuJe]

@gemjuno: I meant that the HOST_IP / KINDLE_IP config will only apply to the *USB* network interface.

On the WiFi front, if you want to make sure your Kindle always gets leased the same IP for its *wireless* network interface, you'd have to setup a MAC filter in the DHCP config of your router.

And, FYI, when you're using USB, you're bypassing your router, so you don't even have to be in the same address class at all, much less in the same range. In fact, I'd recommend explicitly getting out of the usual network address range of your network to avoid IP conflicts, so, yeah, you could use the default.