"Distributed" proxies

Hello,
My friend and I each currently have a server setup, resulting in a total of two servers on two different IPs.

What I would not want to do is:

• Setup a hub server
• Setup a central proxy
• Use a round-robin DNS
• Enable "seamless/automatic" server teleportation
• Maintain the same set of plugins/plugin-related features across servers

What I would like to do is allow synchronization of a player's inventory (and health) as the user [manually] teleports between...

"Distributed" proxies