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conf/default/*
To alter the selected interface to the source setting

conf/all/*
To alter all interface to selected setting
For example : conf/all/forwarding to activate the package forwarding IPV6 for all interfaces

conf/interface/*
To alter selected interface setting to setting selected
For example : autoconf to activate link-local address base on MAC address, accept_ra to accept router advertisement, etc

route/*
To alter common or public setting for routing
For example : flush, gc_interval, mtu_expires

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