Hi, I have a ATT s4 thats been having issues with my Asus AC66u router. The wifi download arrow constantly blinks every second but no apps are pulling data. It keeps recieving packets from my router to my phone with the destination MAC 01:80:c2:00:00:00. They never stop coming, I know that this is an issue with this phone and my router because I plugged my old router into the asus and connected my phone to it and no weird data coming through. I've been using my old router to prevent the severe battery drain at my house. I have a nexus 7, and an asus transformer tablet that do not suffer this problem only this phone. Can someone tell me what is going on with it? and if there is a fix for it?