DNS in iOS 5.1.1 not appearing in Kodi 15.2

I had 14 running on my old iPad 1 – has been working absolutely fantastic for several years. Then the iPad crashed and I had to start over by re-installing iOS 5.1.1 and then jailbreak again.

No problems there. And I could even update to 15.1, which I believe is the last version of Kodi to run on iOS 5.1.1?

But my chosen DNS servers on the iPad – open DNS and google DNS – do not appear in Kodi.

It was never a problem before: Just change the auto-fetched DNS IPs to IPs of your own choice and Kodi would automatically pick the up.

Any solutions?