CXF-8257 org.apache.cxf.ext.logging.LoggingInInterceptor will log a given message only once:
Filtering is done per message, not per Interceptor instance. We use a custom MyLoggingInInterceptor which subclasses the LoggingInInterceptor. (We Subclass in order to use different LogEventSender). So two distinct interceptor instances are applied to the Endpoint/Bus/Client but the message is logged only in the first invocation.