On Jul 22, 2010, at 5:37 PM, Matthew Kaufman wrote:

> valdis.kletni...@vt.edu wrote:
>> On Fri, 23 Jul 2010 00:33:45 BST, Matthew Walster said:
>> 
>>  
>>> I never saw the point of assigning a /48 to a DSL customer. Surely the
>>> better idea would be to assign your bog standard residential DSL
>>> customer a /64 and assign them a /56 or /48 if they request it, routed
>>> to an IP of their choosing.
>>>    
>> 
>> If they're using autoconfigure for IPv6 addresses, what happens if they want 
>> to
>> share that connection?  Giving them a /64 off the bat means that a very 
>> sizable
>> fraction of your users are going to call.
>> 
>> Phrased differently - how screwed would you be if you engineered your IPv4
>> network so the default was "one device only", and the customer had to call 
>> you
>> and ask for a network config change because they wanted to hook up a $50 home
>> wifi router?
>> 
>> If it doesn't make sense for IPv4, why would you want to do it for IPv6?
>>  
> "Home wifi router" vendors will do whatever it takes to make this work, so of 
> course in your scenario they simply implement NAT66 (whether or not IETF 
> folks think it is a good idea) however they see fit and nobody calls.
> 
> Matthew Kaufman

Well, wouldn't it be better if the provider simply issued enough space to
make NAT66 unnecessary?

Owen


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