vpn troubleshooting app armor

Author: vankovap

apps/docs/content/references/networking/vpn.mdx

@@ -115,6 +115,15 @@ zcli vpn up --mtu 1350
 
 This resolves packet size conflicts that can occur when multiple VPN connections are active simultaneously.
 
+#### 5. wg-quick Issues on Ubuntu 25.*
+**Problem**: VPN fails to start due to wg-quick errors on Ubuntu 25.* systems.
+
+**Solution**: Install and configure AppArmor utilities:
+```bash
+sudo apt install apparmor-utils
+sudo aa-complain wg-quick
+```
+
 ## Enhanced Security with WireGuard
 
 Zerops uses **WireGuard** to create secure VPN tunnel connections to your project's private network. This provides enhanced security compared to traditional **SSH** connections.