Some time ago, we gave one of our AS/400s an outside IP address. One
that happens to be the same as one that's currently in use elsewhere.
We never got rid of the internal IP address.
But now, I need it to talk to the box that's the rightful owner of the
IP address it was given, and it's not letting me.
And when I try to get rid of the interface with the in-use address, it's
telling me that the default route is tied to that interface.