final StringBuffer buf = new StringBuffer(64);
for (int i = 0; i < knownHostTasks.length; i++) {
if (i > 0) {
buf.append(",");
}
final KnownHostsTask task = knownHostTasks[i];
buf.append(task.ipaddr)
.append("::")
.append(task.interfaceName);
if (task.printName != null) {