LAN not reachable after a time

[sadden3194]

Summary

Wireguard VPN connection active (Fritzbox router as Wireguard server), but no connection to LAN after unspecifc time.

Steps to reproduce

Import fritzbox wireguard config to the app.
My config looks like this:

[Interface]
PrivateKey = XXX
Address = 192.168.108.201/24
DNS = 192.168.108.250

[Peer]
PublicKey = XXX
PresharedKey = XXX
AllowedIPs = 192.168.108.0/24
Endpoint = vpn.myDomain.de:51888
PersistentKeepalive = 25

LAN: 192.168.108.0
DNS Server: 192.168.108.250 (Adguard)

What is the current bug behavior?

I am using your app on iphones and ipads. VPN connection works on demand and works without problems.
But after a while, I can't reach my local area network and dns resolution doesn't work anymore (because I cant reach my dns server 192.168.108.250):

For example: I can ping 8.8.8.8 with a response, but if I ping google.de I get no response.
If I try to ping the device IP (192.168.108.201) - I get no response.

Relevant logs and/or screenshots

I attached the logs
debug-20231106-131555 2.txt

[keeshux]

Uhm this seems out of the Passepartout scope, it's an inherent bug of WireGuard as I see it.

[sadden3194]

With the original wireguard app I had not this problem.
Are you sure that this is not a bug of your app?

[keeshux]

Then “sure” is not how I feel about it. 🤣 I keep this open.

[0xBF90E913]

I noticed that this problem occurs when there is a "PresharedKey" in the wg config. On other versions of WireGuard (or I don’t know what it depends on), where “PresharedKey” is missing in the config during generation, this error is not observed