I was on a MIUI GB ROM and bought a wifi router Tplink WR74ON. After a few days I could not access google.com, bing.com, ask.com... and YT behaved strangely. But I could access czech domains and "anything.google.com", which leads to google.com/anything, so no help. Oh and the Play store had no connection. Google.cz works until I perform a search... then No connection !instantly again.Yahoo and a lot of smaller sites work. I tried stock browser and Opera mobile.
So I flashed MIUI Scotland 4.0.4 and after a few hours the problem is here again. Restart of anything does not help, on notebook there is no problem and the router is set out of the box, no special settings of any kind. It pings google.com with no problem.
If anyone has any idea.... thank you.