I am using Airtel sim. I am able to use my Home OpenVPN and OpenVPN (via Linode). OpenVPN only works when Airtel 4G has IPv4. Whenever Airtel 4G changes to IPv6, all my OpenVPN's stop working. Later, just to test, I disabled and enabled Airtel sim on my phone and then I got IPv4 and my OpenVPN's started working again. What is happening here? Anybody?