code: protected ArrayList<SIPNode> getReachableSIPNodeInfo(InetAddress balancerAddr, ArrayList<SIPNode> info) {
  		if (balancerAddr.isLoopbackAddress()) {
  			return info;
  		}
  
  		ArrayList<SIPNode> rv = new ArrayList<SIPNode>();
  		for(SIPNode node: info) {
  			if(logger.isLoggingEnabled(StackLogger.TRACE_TRACE)) {
  				logger.logTrace("Checking if " + node + " is reachable");
  			}
  			try {
  				NetworkInterface ni = NetworkInterface.getByInetAddress(InetAddress.getByName(node.getIp()));
  				// FIXME How can I determine the ttl?
  				boolean b = balancerAddr.isReachable(ni, 5, 900);
  				if(logger.isLoggingEnabled(StackLogger.TRACE_TRACE)) {
  					logger.logTrace(node + " is reachable ? " + b);
  				}
  				if(b) {
  					rv.add(node);
  				}
  			} catch (IOException e) {
  				logger.logError("IOException", e);
  			}
  		}
  		
  		if(logger.isLoggingEnabled(StackLogger.TRACE_TRACE)) {
  			logger.logTrace("Reachable SIP Node:[balancer=" + balancerAddr + "],[node info=" + rv + "]");
  		}
  		
  		return rv;
  	}
docs: Contribution from Naoki Nishihara from OKI for Issue 1806 (SIP LB can not forward when node is listening on 0.0.0.0)
  Useful for a multi homed address, tries to reach a given load balancer from the list of ip addresses given in param
  @param balancerAddr the load balancer to try to reach
  @param info the list of node info from which we try to access the load balancer
  @return the list stripped from the nodes not able to reach the load balancer