My idea is to have clients connected to two VPN servers (different public IP and different types of connections eg OpenVPN, SSTP, …). Therefore, I would not lose connection with clients if something happened to one VPN server. Clients and servers will be RouterOS. I need clients on servers to have the same internal (maybe virtual) IP no matter what server they are connected to. Do you have any idea how to solve this?
I know how to set up a client to connect to one VPN server and have a local IP there. Then route these IPs subnets between VPN servers using OSPF, for example. But how do I create one local IP that would access the client, no matter which VPN server is connected?