extender setup

https://blog.libero.it/wp/mywifiextsetup/2020/11/04/troubleshooting-common-issues-with-linksys-re9000-ac3000-extender/

http://www.letmetalk.info/discussions/how-to-configure-a-linksys-extender-that-doesn-t-support-wps.html

https://linksysextendersetup.myshowroom.se/how-to-perform-linksys-re6800-extender-setup/