I don't know whether this works. On the v4 firmware, we can see files in
/etc/gl-switch.d but I don't know yet how the system determines which
file to choose. I assume it's dependend on the "page" of the display.
But I haven't figured out yet how or rather where those pages are
organised.
I have rsynced the whole device before associating with a new device and
after. The only file that got modified was /etc/oui-tertf/client.db.
We intend to have it stored in memory rather than on flash. This should
be okay since the kernel also holds the MAC addresses in memory.
