And we have put into a lot of 1000-65535 ports range,but the message is the same:That portxxxxis currently in use, please select again.
As you know,in fact,the port of 8042 have no program used it.we had use netstat,lsof found the port,but no program used it.
#ls -i :8042
#netstat -anp|grep 8042
and output is nothing.