I am working on OpenWrt 15.05.1 "Chaos Calmer" and I am new to openwrt. When any configuration file present under /etc/config are modified, the files that are under /overlay/upper/etc/config are not getting updated. I read somewhere that any change done in any of the files, will show up in the /overlay partition. But, it seems to differ in my case. I would like to understand what pointers I should look into to resolve this issue.
Any reason why you use such an old version? I don't think there's any support for it anymore.
But someone might still be able to answer your question.
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That doesn't sound reasonable, so what do you want to achieve?
You should not access config files directly, instead use UCI API with CLI/ubus.