I've been searching I haven't found an answer. Maybe I'm not looking the right place or what I want can't be done.
I have compiled a firmware, for a TPLink TL-WR840N v4.0, and this firmware I use in many devices. I a /etc/config/network file with my custom config, and I want to include an auto-generated ula_prefix.
I firstly installed a firmware I've downloaded from OpenWRT site, then copied config files from the router to edit and create my I custom configs. The problem is that all routers will have the same ula_prefix, and I can't find the answer to make it auto-generated. If I omit the line "option ula_prefix", it will be disabled.
Is there a way to make it auto-generated for each router I install my custom firmware?