Qt application bluetooth error

Question

I am working on some Qt application, which communicates with Bluetooth hardware. Now, if I run this app as normal user:
[user@workstation]: /mnt/projects/btProjectBuild/debug>$ ./btClient
I get following warning/error:
qt.bluetooth.bluez: Missing CAP_NET_ADMIN permission. Cannot determine whether a found address is of random or public type.
However, If I run same app with sudo prefix (as root): [user@workstation]: /mnt/projects/btProjectBuild/debug>$ sudo ./btClient
I do not get this warning/error. I am using ArchLinux Linux workstation 4.12.8-2-ARCH #1 SMP PREEMPT Fri Aug 18 14:08:02 UTC 2017 x86_64 GNU/Linux. Where do I configure bluez to get rid of this warning/error?

Answer 1

This error comes from qt5 bluetooth library not from bluez directly and there is working solution, explained in "Bluetooth LE scan as non root?".