legacy /8

Robert Brockway robert at timetraveller.org
Sat Apr 3 11:17:17 CDT 2010

On Fri, 2 Apr 2010, jim deleskie wrote:

> Just like 640k or memory :)

But what if I said "640 petabytes will be more than anyone will ever 
need".  The future might prove me wrong but it probably won't happen for a 
long time.   That's a better analogy for IPv6.

IPv6 could have included a larger address space, or it could have been 
allocated differently[1] but the reality is we have no way of knowing how 
future generations will use the network.

I full expect that advances in computing will render IPv6 obsolete well 
before the address space is exhausted.  Perhaps this may occur in 100 
years or more.

Future generations may well have to go back to the drawing board to 
develop new protocols to best utilise the technology that they have 
available at the time.

[1] 48bit host identifier rather than 64bit, for example


> On Fri, Apr 2, 2010 at 9:25 PM, Randy Bush <randy at psg.com> wrote:
>>> IPv6 as effectively reindroduced classful addressing.
>> but it's not gonna be a problem this time, right?  after all,
>> 32^h^h128^h^h^h64 bits is more than we will ever need, right?
>> randy

Email: robert at timetraveller.org
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