Use external URL when vpn active

**Is your feature request related to a problem? Please describe.**
When vpn is on, internal url is obviously not reachable, external URL should be used

**Describe the solution you'd like**
Detect if vpn is on, even if network SSID match one in database, use external URL anyways

**Describe alternatives you've considered, if any**
Wait 60 second until it time out and refresh external url

**Additional context**