Two devices keep disconnecting each other
Each device needs its own configuration
What you see
- One device works until another connects.
- Each device works fine when the other is off.
Why it happens
A configuration holds one device's key, and WireGuard sends that key's traffic to wherever it last heard from it. Two devices using one configuration keep taking the traffic from each other.
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Add a device for each machine
In the console, add a separate device for every laptop and phone, and download or scan its own configuration.
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Remove the shared configuration
Delete the shared configuration from every device but one, then delete any device in the console nobody uses.