@LGA1150 Thanks for pointing me to this thread.
Since, I have to stay at home, I just began to go further with the stuff I already did.
Please, up-vote my PR.
Further, I wrote DAWN. And now I start to work on this issue. So I just fix and refactor my daemon to get things into official openwrt repository.
On some branch, I already exchanged neighbor reports automatically, and implemented bss transition. I will go on with it, after bringing the legacy version into the package tree.