CORBA35 — new_callback

Summary: OMG document orbos/98-07-03, section 4.7.4 under new_callback page 4-16,
the first paragraph reads

When the client side object adapter creates the object reference for the
callback object, it may invoke the
new_callback operation on the outermost inbound GIOP Proxy on the server
side and pass the callback object as the argument.

Say, there are no client-side firewalls and there is only one
server-side GIOPproxy firewall.

1. how does the object adapter or the client orb get access to the IOR
of the GIOPProxy object ???
2. how does the object adpater know that the object that is being
created/instantiated will be used as a callback
object ??

Does POA provide any m