Wireguard on android w/o kernel module

[Maximilian Eschenbacher]

Good day to all of you,

I'm using wireguard version 0.0.20180601 from google play store on a
stock BQ Aquaris X with android version 8.1 without the wireguard kernel
module.

I am unable to start any tunnels. Every time I am trying to do so there
is a window which tells me: "Error brining up tunnel: VPN service not
authorized by user". I have been looking around the android settings
because this sounds like a configuration issue which I could be able to
solve as an end user, however, I didn't turn up anything useful.

Here's the `adb logcat` output:

06-01 18:27:03.518  6265  6906 D WireGuard/GoBackend: Changing tunnel test1 to state UP
06-01 18:27:03.519  6265  6906 I WireGuard/GoBackend: Bringing tunnel up
06-01 18:27:03.542  6265  6265 E WireGuard/b: Error bringing up tunnel: VPN service not authorized by user
06-01 18:27:03.542  6265  6265 E WireGuard/b: b.b.a.b: java.lang.Exception: VPN service not authorized by user
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at b.b.a.a.d(Unknown Source:19)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at b.b.a.a.e(Unknown Source:4)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at b.b.a.a$n.a(Unknown Source:18)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at b.b.a.a.b(Unknown Source:35)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at b.b.a.a.c(Unknown Source:15)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.e.a.a(Unknown Source:0)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.e.e.run(Unknown Source:4)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at android.os.Handler.handleCallback(Handler.java:790)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at android.os.Handler.dispatchMessage(Handler.java:99)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at android.os.Looper.loop(Looper.java:164)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at android.app.ActivityThread.main(ActivityThread.java:6518)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at java.lang.reflect.Method.invoke(Native Method)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
06-01 18:27:03.542  6265  6265 E WireGuard/b: Caused by: java.lang.Exception: VPN service not authorized by user
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.backend.GoBackend.a(Unknown Source:25)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.backend.GoBackend.a(Unknown Source:74)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.d.b.b(Unknown Source:2)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.d.w.a(Unknown Source:6)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.e.a.a(Unknown Source:0)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at com.wireguard.android.e.c.run(Unknown Source:6)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
06-01 18:27:03.542  6265  6265 E WireGuard/b: 	at java.lang.Thread.run(Thread.java:764)

Am I missing something obvious?

Best regards

Max
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