SUMMARY
Feature request: Ability to cancel secondary (VPN) connection.

When VPN is temporarily unavailable, it is not easy to skip VPN connection and just use a normal network connection without VPN.

STEPS TO REPRODUCE
1. Add Wi-Fi connection in plasma-nm.
2. Add VPN (e.g. openvpn) in plasma-nm.
3. In the Wi-Fi connection's settings, enable "Automatically connect to VPN" and choose the openvpn VPN connection.
4. Break/stop the openvpn server or wait until it goes offline by itself ;)
5. In the plasma-nm applet, click Connect to connect to Wi-Fi. (Or imagine that you have just turn on the computer and now NetworkManager tries to reconnect to Wi-Fi automatically.)
6. Assume you can't fix the VPN server and you want to go online immediately using plain Wi-Fi connection without VPN.

OBSERVED RESULT
To go offline, you have to open plasma-nm settings dialog, select the Wi-Fi connection, disable "Automatically connect to VPN", then click OK/Apply and finally manually reconnect to Wi-Fi in the plasma-nm applet.

This approach is complicated and time-consuming. I would like to avoid it, but there is no good alternative.

EXPECTED RESULT
There should be a button "Skip/Bypass VPN" in the plasma-nm applet on in a Plasma notification. This button appears when Wi-Fi connection is live, and at the same time the secondary VPN connection is being attempted but not ready yet. When you click on this button, plasma-nm should go online using just the Wi-Fi connection, like if you didn't enable "Automatically connect to VPN".

SOFTWARE/OS VERSIONS
Operating System: Fedora 31
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.61.0
Qt Version: 5.12.5
Kernel Version: 5.3.7-301.fc31.x86_64
OS Type: 64-bit
Processors: 2 × Intel® Celeron® CPU B800 @ 1.50GHz
Memory: 3,8 ГиБ

ADDITIONAL INFORMATION