Dear, I am facing a problem with a CORBA/Java application. My appication works well when the IP interface is Up. However, when the IP goes down, it doesn't start and shows the message that cannot connect with naming service. It is funny, because I think that when the interface goes down, it should be taken localhost(127.0.0.1) and start without problem. What can it be happening? Is it possible that loopback doesn't implement full TCP/IP stack? Personally, I think not. Any idea?. Thank you in advance. Canigia