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

Matthew Moyle-Croft mmc at internode.com.au
Thu Feb 5 01:28:33 UTC 2009

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.

I'm still not convinced though that, given DHCPv6 is going to be a 
reality for DNS assignment etc, that stateless autoconfig is needed and 
thus /64 doesn't have to be the smallest we assign.


Matthew Moyle-Croft - Internode/Agile - Networks
Level 4, 150 Grenfell Street, Adelaide, SA 5000 Australia
Email: mmc at internode.com.au  Web: http://www.on.net
Direct: +61-8-8228-2909		    Mobile: +61-419-900-366
Reception: +61-8-8228-2999          Fax: +61-8-8235-6909

More information about the NANOG mailing list