I wouldn’t have called this “tethering over Wifi”, but just “using L5 as Access Point”, anyway.
But, this does not match my use case, which is
Internet <-- AP "visitor" <--Wifi-- L5 <--USB tethering-- MacBook --Wifi--> AP "office" --> company LAN/WAN/Internet
From the MacBook I run SSH into the L5 to read and answer there with the MUA mutt my (private) mails. This is the current config with the L5 and which I want to have with the L11 because of its bigger screen and the hardware keyboard.