Why not simply steal a couple of unused /8's?
Such as,
001/8
002/8
005/8
007/8
037/8
.... see
http://www.iana.org/assignments/ipv4-address-space.
Pretty screwed if IANA decides to use them but.....
Now, I don't see why there's all this talk about joining to Auz - how exactly might we plan to do that???[/url]