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Devices & OS

Why does a VPN drop when switching from Wi-Fi to mobile data?

THE SMARTPHONE CHANGES ITS NETWORK INTERFACE AND RESETS THE ACTIVE TUNNEL SESSION.
When leaving your home router's range, the operating system switches its stack to the cellular network and assigns the device a new IP address. Older protocols cannot seamlessly migrate an open secure socket to a new connection.

Mechanics of Drops During Network Gateway Switches

Your connection is bound to a specific network adapter and the device's source IP address. When transitioning from a wireless router to a cellular tower, the old network route closes, and the tunnel server stops accepting packets from the new address until full re-authentication completes.

How to Configure Seamless Switching

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