ubuntu - New host key while EC2 server is turned off -

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I have a server on EC2 which I was connecting via FileZilla SFTP. Suddenly this is telling me to trust a new host key even when the machine stops. Is it a man in middle attack? If the machine is off, then how does it send a new host key?

I think your example IP address has changed (such as due to restart) and your The original IP address was assigned to a different instance.

These two separate host keys and the way you can connect,

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