Failure to load balance clustered SLSB

The following code points to an EJB which is specified as clustered via the jboss-ejb3.xml - however it always connects to the first node in remote.connections.

Properties properties = new Properties();

properties.put("endpoint.name", "farecompare-client-endpoint");
properties.put("remote.connectionprovider.create.options.org.xnio.Options.SSL_ENABLED", "false");

properties.put("remote.connections", "cmc5101,cmc5102");
properties.put("remote.connection.cmc5101.host", "cmc5-101");
properties.put("remote.connection.cmc5101.port", "4447");
properties.put("remote.connection.cmc5101.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS", "false");

properties.put("remote.connection.cmc5102.host", "cmc5-102");
properties.put("remote.connection.cmc5102.port", "4447");
properties.put("remote.connection.cmc5102.connect.options.org.xnio.Options.SASL_POLICY_NOANONYMOUS", "false");

PropertiesBasedEJBClientConfiguration configuration = new PropertiesBasedEJBClientConfiguration(properties);

final ContextSelector ejbClientContextSelector = new ConfigBasedEJBClientContextSelector(configuration);

final ContextSelector previousSelector = EJBClientContext.setSelector(ejbClientContextSelector);

final Hashtable jndiProperties = new Hashtable();
jndiProperties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");

final Context context = new InitialContext(jndiProperties);

LocationModuleAPI locationModule = (LocationModuleAPI) context.lookup(
"ejb:locationmodule/xxi-framework-location-finder-module-ejb//LocationModuleSessionBean!com.xxi.framework.locationfindermodule.api.LocationModuleAPI");