curry.hei wrote

The UG suggested that WDS can be selected? Where?

See User Manual: http://www.tp-link.com/res/down/doc/TL-WA850RE_V1.2_UG_EU.pdf, page 17, it reads:

Quote:
Operation Mode - Two Operation Modes are supported in most of regions, including Universal Mode and WDS Mode. And some regions also support Proxy Mode.
Universal Mode - The range extender is compatible with most routers and access points in this mode.
WDS Mode - Please choose this mode if your main router or access point works in WDS mode (uses a 4-address frame format to interact with stations).


See Qick Setup: http://www.tp-link.de/resources/document/tl-wa850re_qigv_multi_language.pdf , page 3. It reads

Quote:
"Wählen Sie als Operation Mode die gewünschte Betriebsart aus und setzen Sie im Feld Region den richtigen Wert ein (Deutschland: Germany, Schweiz: Switzerland, Österreich: Austria). Klicken Sie Next (Weiter)."

which means in english: "Choose desired operation mode and your country ..."


See also the WA850 emulator, menu "Wireless": http://www.tp-link.de/resources/simulator/TL-WA850RE_V1.2/index.htm

Quote help section in emulator:
Range Extender Mode 2 - In this mode, the range extender will help the wireless stations communicate with root device directly and efficiently, but it requires the root device supporting WDS technology.


BTW: Same with TL-WA860. See page 9 http://www.tp-link.de/res/down/doc/TL-WA860RE(EU_V1_UG.pdf
Emulator TL-WA860, Menu "Wireless": http://www.tp-link.de/resources/simulator/TL-WA860RE/userRpm/Index.htm

Quote help section in emulator:
WDS Mode - In this mode, the range extender will help the wireless stations communicate with root device directly and efficiently, but it requires the root device supporting WDS technology.


So, since 4addr mode is just an attribute/setting in the mac80211 driver, is it by any means possible to set this attribute even in v2 hardware versions?

Alternatively I could try to get OpenWRT running to find out, but first, I do not want to break cover to get access to the serial console (it's ultrasonic sealed cover) and second, I would prefer to use official TP-Link software if 4addr mode is supported (maybe in an "advanced settings section").