The public IP address or hostname cannot be retrieved from the network interface when the server is not directly on a public network, but under NAT.

In this case, the server should follow the approach we already did with kubernates clusters: read the system variable HOSTNAME and use that for the server address.

Workaround until the fix is ready:

Set -Darcadedb.ha.k8s=true when the server start. This forces the HA component to use the HOSTNAME instead of the local address.