We were telling users that setting shutdown_network=YES would shut down
the network interfaces during shutdown, but this was exactly the
opposite of what we were doing. The default was YES, which was keeping
the interfaces active.
This keeps the default behavior, but renames the setting to keep_network
which more accurately describes its function, and instructs users to set
it to NO if they want the network interfaces to go down.
This simply assigns static addresses and an optional default route.
It's possible to add external commands as well, so to create a bonded interface.
Hopefully we can add a few examples to satisfy most of the old net.lo, which
is no longer installed into boot by default.
