I would like to understand if it's possible to hide a cluster of servers
behind 1 public IP address.
Communication between my clients and my server is done over UDP.
Communication can be initiated by clients or by one cluster-node.
For client initiated use-case, if a client C1 with C1IP ip address send
an udp packet to the public VIP address. The loadbalancer receives the
packet, examines it and searches if there is a "rule" for it. If there
is one, it rewrites destination IP choosing a server (let's say R1 with
R1IP address) depending of loadbalancing algorithm and it adds in kind
of association table that C1IP is attached to R1IP. In UDP, this
association has a configurable lifetime.
Does it works for Server initiated use-case ?
If I send an udp packet from server-node R2 (R2IP) to C2 (there is no
association entry for this IP), does it create a new entry (C2IP<=>R2IP)
in the association table.
What happened when I send an udp packet from R3 (R3IP) to C1 although
C1IP is already associated to R1IP ? does it replace the previous
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