Virtual Server to Virtual IP

Hi,

I have a network interface (IPsec tunnel interface) with 10.212.135.1/32 address.

I created a Virtual IP object of type static NAT:

  External IP Address/Range: 10.212.135.1 - 10.212.135.1

  Mapped IP Address/Range: 10.0.15.201 - 10.0.15.201

  Port forwarding:

    Protocol: UDP

    External Service Port: 5514 - 5514

    Map to Port: 5514 - 5514

Now, from 172.19.119.100/32 via the IPsec tunnel to 10.212.135.1:5514 UDP works as this is forwarded to 10.0.15.201:5514. All good.

If I now try to change the Mapped IP Address/Range to 10.0.15.210 (which is a Virtual Server with three real servers of 10.0.15.201, 202, 203) this breaks.

I get "denied by policy 0 dropped".

Is this possible, a valid use case? I tried adding another policy to allow to the Virtual Server and destination All but no dice.

Please advise if any further info is required.

Thank you.