Unexpected server port

[Obiwan-droid]

Hi,

I have a question about an open server port.

In our ACE+TAO-8.0.5 based CORBA-Service running on RHEL9, we observed that the IIOP profile leads to an open server port somewhere within the used reactor ... although we created the rootPOA with lifespanPolicy PortableServer::PERSISTENT and started the service with -ORBEndPoint iiop://<host>:<port> ...

As one can easily see ('ss -tulpn'), there is not only a tcp port opened at <host-ip>:<port> (given by ORBEndPoint) but additionally a further (dynamic?) tcp port listening on every local IP 0.0.0.0:<dynamic_port>.

What is this port used for?
Shouldn't the configured <host-ip>:<port> be enough?
Is there a way to deactivate the dynamic port or at least to configure this dynamic port somehow?

Much thanks,
Andreas

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