if(corr != null) corr.receive(evt); else if(log.isErrorEnabled()) log.error("corr == null");
        public void up(Event evt) {            if(evt.getType() == Event.SET_LOCAL_ADDRESS) {                local_addr=(Address)evt.getArg(); // suggested by Yaron Rosenbaum                if(corr != null)                    corr.setLocalAddress(local_addr);            }            if(corr != null)                corr.receive(evt);            else                if(log.isErrorEnabled()) log.error("corr == null");        }