I've just had a gander around mine - supplied by PlusNet and restricted (by firmware) to Plusnet settings. I can't find any way to change the reconnect mode. I have to say that I find the organisation of the information and menus on this router incredibly frustrating as well as the limited functionality being a niggle (particularly the very limited management facilities for wireless). But for some reason it is noticeably faster than my 3com routers, so I stick with it.
Huawei P10 review