A DESCRIPTION OF THE PROBLEM :
The J2SE 6 org.omg.IOP package API contains a description that points to a link that is dead (server may be down). Specifically:

Package org.omg.IOP Description

This package contains the IOP module specified in the OMG document The Common Object Request Broker: Architecture and Specification, http://cgi.omg.org/cgi-bin/doc?formal/99-10-07, section 13.6.

This URL appears to be unavailable.


URL OF FAULTY DOCUMENTATION :
http://java.sun.com/javase/6/docs/api/