v6 & DSL / Cable modems [was: Private use of non-RFC1918 IP space (IPv6-MW)]

Seth Mattinen sethm at rollernet.us
Wed Feb 4 19:33:12 CST 2009


Matthew Moyle-Croft wrote:
> 
> 
> Anthony Roberts wrote:
>>
>>
>> I don't think there's any need for the ISP's routers to advertise all the
>> prefixes they delegate. They'll advertise the /48 or whatever it is, and
>> then delegate chunks out of that.
>>   
> My apologies for not being clear:
> 
> As I posted just before in reply to MarkA - I'm hoping that for the
> MAJORITY of customers that I can use PD and dynamic /64s (or whatever)
> local to a BRAS.
> My FEAR is that people ("customers") are going to start assuming that v6
> means their own static allocation (quite a number are assuming this).  
> This means that I have a problem with routing table size etc if I have
> to implement that.
> 

Well, it is static, but like most static IP services offerd by an ISP,
if you leave you can't take your addresses with you. Even with DSL from
AT&T if you move locations you get a different subnet.

~Seth




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