People will start overloading the numbers.
I do hope we'll have stopped using IPv4 by then... But well, a decade after address exhaustion we are still on it, so who knows?
I do hope we'll have stopped using IPv4 by then... But well, a decade after address exhaustion we are still on it, so who knows?
It uses them a little differently -- in IPv4, there is one protocol per packet, while in IPv6, "protocols" can be chained in a mechanism called extension headers -- but this actually makes the problem of number exhaustion more acute.