private Set<Real> realsOf(NodeList nodes, CloudAccount cloudAccount) {
        Set<Real> reals = new LinkedHashSet<>();
        for (var node : nodes) {
            for (var ip : reachableIpAddresses(node, cloudAccount)) {
                reals.add(new Real(HostName.of(node.hostname()), ip));
            }
        }
        return reals;
    }
Returns real servers for given nodes
node-repository/src/main/java/com/yahoo/vespa/hosted/provision/provisioning/LoadBalancerProvisioner.java