IPv6 Interview Questions and critic

Wed Aug 28 00:54:29 UTC 2002

On Tuesday, August 27, 2002, at 05:33  PM, Iljitsch van Beijnum wrote:

>
> On Tue, 27 Aug 2002, Kurtis Lindqvist wrote:
>
>>> <censored> fears abuse as a hardware ID wired into the ipv6 protocol 
>>> can
>>> be used to determine the manufacturer, make and model number, and 
>>> value
>>> of the hardware equipment being used by the end user.
>
>> ...uhm, and? What is the real difference with a IPv4 address and 
>> privacy?
>
> The difference is that someone using a dynamic IP address is still
> recognizable by the lower 64 bits of their dynamic address because this
> part is always the same. (But cookies do the same thing.)

What is interesting is that people can identify a EUI-64 unicast 
address no matter where you are. For example, i use my laptop at work 
and at home (assuming I had an ipv6 connection at home). I could be 
identified as the same computer, without using cookies, since my base 
64 address would be the same, despite the network prefix.