Connection time-out between RAN and mme's load balancer

[AlessioDiama]

Hi,
i installed version 2 of the EPC in a private Openstack deployment and i am facing problems with the control plane traffic simulation.
I checked all the instances components and each of them is correctly up and running. When i start the control plane traffic simulation, i checked with tcpdump that traffic is correctly flowing from mme's loadbalancer to the two instances of mme i have.
However, the control plane traffic simulation is hanging due to a socket time-out error:
i checked on sctp_client.ccp source code and it tries to open a socket with mme's loadbalancer on port 5000, which is the port mme instances are listening on. Actually mme's loadbalabncer is not listening on port 5000 so the socket can not be opened. If i try to force it opening a socket with first mme's instance, the socket is correctly opened.

Do you have any clues about how to solve this problem?

Thank you in advance.