OpenSOHO and OpenWisp do both send parts of /etc/config files to the AP.

While we're discussing: someone did an attempt in the OpenSOHO discussions to have a freshly flashed AP register automatically with OpenSOHO:

https://github.com/rubenbe/opensoho/discussions/1#discussion...

The Openwisp agents running on the AP are surprisingly lightweight (they do use Lua, tar, curl and a bit of shell scripting)

VLAN backed SSIDs are one of main reason I started OpenSOHO (although support is not there yet) I don't want to log into each AP to set it up manually. I do have a wired back haul, but support for wireless backhaul will probably arrive, since quite some people have one set up.

In case you would find an easy method of bootstrapping the setup via DHCP, certainly let me know! (Maybe that's easier to be discussed on GitHub)