Re: "Nobody uses it..."
Right. Friends don't let friends use IPv6.
Adding an octet to the address field alone won't do the trick, though, a 40-year-old IPv4 carries a lot of other baggage, none fixed by IPv6. Better to keep using NAT where it's suitable, use the secondary market to buy and sell IPv4 space, and migrate over time to RINA ( pouzinsociety.org )