iOS 9.3 VPN On Demand ignores RequiredDNSServers

We have an application which works well on iOS 9.2, it uses the "RequiredDNSServers" of VPN service on demand. But when you take 9.3 (9.3 all versions, including 9.3.2 beta 4), VPN on demand just ignore "RequiredDNSServers".

"RequiredDNSServers" is an array of IP addresses that are used to resolve the specified areas. When DNS servers are unavailable, a VPN connection is established in response. However, the VPN connection should never start.

Submit a bug to apple iOS SDK team and got the answer that ' there is nothing can help Developer Technical Support, you need to connect General supported VPN that is supported by AppleCare. As I use the same mobile configuration on iOS 9.2 and 9.3 iOS but get totally opposite results. So I think there must be something wrong with iOS 9.3. Could someone help?

And I'm not the only person who has experienced this problem. Another thread here: https://forums.developer.apple.com/thread/42624

Here's a snippet of our mobile configuration.

Expected result:

When loading from google.com, it must first check for result DNS 8.8.8.8.

Actual result:

It will not ask for result DNS 8.8.8.8 and immediately start VPN connection.

  1. < key > OnDemandEnabled < / key >
  2. < integer > 1 < / integer >
  3. < key > OnDemandRules < / key >
  4. < table >
  5. < dict >
  6. < key > Action < / key >
  7. < string > EvaluateConnection < / string >
  8. < key > InterfaceTypeMatch < / key >
  9. < string > Wifi < / string >
  10. < key > ActionParameters < / key >
  11. < table >
  12. < dict >
  13. Areas of < key > < / key >
  14. < table >
  15. < string > < /string > www.google.com
  16. < / array >
  17. < key > RequiredDNSServers < / key >
  18. < table >
  19. < string > 8.8.8.8 < / string >
  20. < / array >
  21. < key > DomainAction < / key >
  22. < string > ConnectIfNeeded < / string >
  23. < / dict >
  24. < / array >
  25. < / dict >
  26. < / array >

Please do not post the same question multiple times. It can be confusing and unnecessarily tedious for everyone. When anyone can reply to your message, they will.

See you soon,.

GB

Tags: iPhone

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