title: How can I change wifi DNS setting iOS using swift
body: <p>I am trying my best to get this working. </p>
  
  <p>I have a DNS server for my clients where sometimes I send them emails to chnage their DNS Settings. But now I want to do that via an ios app. 
  is there a way I can let them download the app and click one button on the app that will chnage it ? </p>
  
  <p>I looked at this 
  <a href="https://developer.apple.com/library/ios/documentation/NetworkExtension/Reference/NEDNSSettingsClassRef/index.html#//apple_ref/occ/cl/NEDNSSettings" rel="nofollow">https://developer.apple.com/library/ios/documentation/NetworkExtension/Reference/NEDNSSettingsClassRef/index.html#//apple_ref/occ/cl/NEDNSSettings</a></p>
  
  <p>but unsure </p>
  
  <p>THanks</p>