On the control of the Internet.

I meant to ask in my original posting:

    What happens when the US shuts down part of its part?
    Depends on what part it shut down, of course.
    But what are the available boundaries for the parts in question?

If we don't know what will be ordered shutdown and what the boundaries
of the shutdown area will be are there engineering concerns that can not
be foreseen and economically provided-for?