It's a nice idea, but to implement would be quite complex/involved. Firstly, there
would likely need to be the concept of a master node along with some mechanism for
voting/election. Also, there would need to be changes across all 4 modules (dmq,
dmq_usrloc, usrloc and nathelper) to make it work. On top of that, we'd need to
consider what happens when a node is restored and takes back its IP.
In any case, to select the correct node to take over keepalives, we'd need to know
where the IP had been (re)assigned. In your current setup, how do you decide which host
takes over the IP (if at all) in the event of a failure?
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