D7100 not found with wu-1a wifi on Nexus 5 with 5.1

```
Hello,
I've tried your application with my equipment. The app doesn't find the camera. 
Wi-fi in on and my smartphone in connected to the wi-fi adapter. It could be a 
problem of lollipop 5.1 update, it doesn't connect to wi-fi network without 
internet connection. 


```

Original issue reported on code.google.com by `umberto....@gmail.com` on 28 Apr 2015 at 12:18
