Issue: Default Action Pattern

Gurus,

In the case of a WSDL 2.0 interface inheriting another interface, what wd be
the Default Action pattern for Faults that were inherited from the parent
interface ? Would it be still containing the targetNamespace of the parent
interface [the declaring interface], and the name of the target interface,
or would it be composed from the targetnamespace and the interface name of
the child interface ?

The semantics for this is Not clear in the document that describes the WSDL
2.0 Binding for WS-Addressing.

-Ram