I have 2 Azpen tablets, one running 5.1.1, the other running 4.2.2. I have an OpenVPN server and I am able to connect and use it successfully with a variety of devices (Windows, Linux, and the 4.2.2 tablet).
On both tablets I use OpenVPN Connect.
However, with the 5.1.1 tablet, it connects, I receive 4.02 Mbytes of data, and then nothing else ever happens. Applications are unable to get any data from the network.
Something else is clearly wrong too, because when I hit Disconnect in OpenVPN Connect, it does not disconnect cleanly. It seems to hang for a few seconds, then I get a message about "threads", and the normal network connection does not come back until I power the tablet off and back on. If I try to connect again with OpenVPN before the power cycle, it hangs at the DNS step.
The OpenVPN config files on both devices are identical except for the device-specific items. I have to think there is a setting somewhere on the Lollipop tablet that I'm missing. (I'm much more familiar with the 4.2.2 tablet).
Comparing the logfiles does not shed any light. I keep coming back to a problem or setting on the tablet that I can't find.
Has anyone else had this problem and fixed it?
Note: apparently not a duplicate of Can't connect to OpenVPN properly on Lollipop