Is that possible to implement RTP voice fail-over?

In case RTP node goes down - the call should not  be interrupted.
This is kinda strange - but client want to have super redundant system.
For example use 2 RTP nodes and simultaneously send 2 RTP stream over 2
nodes (yes - network traffic will increase)
Or maybe is a way to recover UDP connections after a crash and replace
node state.
Maybe use a Kubernetes tools for that purpose ?
Here what i found in mailing-list -
https://lists.kamailio.org//pipermail/sr-users/2015-December/091006.html

Many thanks for any hints to this topic.




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