[FEATURE] Mobile - Ability of adding a backup IP

[skridofly]

Is your feature request related to a problem?

When the internet access for the server is cut, I can't connect to the original proxy IP entry. To connect to the stump instance again, one needs to create a second entry with the local IP address.

Describe the solution you'd like

Entering the local IP in the same entry and trying to use that IP if connecting to the primary fails.

Describe alternatives you've considered

two separate entries

Additional context

first mentioned in this message