[AusNOG] IPv6 (was Happy Birthday .... AARnet)

[MILES DAVID]

In my view (and one I am pushing into the Broadband Forum) there is a
great risk of trying to solve everything before getting something out
the door. In Broadband Forum New Orleans meet we made good progress in
the area of CPE so there is indeed light at the end of the tunnel. One
key consideration for us all is that IPv4 (Dual Stack devices) are going
to be here for a while in a consumer home network - why not leverage
what is already there (in this case DHCPv4 name servers option). FYI are
planning on supporting both DHCPv6 stateless and RFC 5006 so whichever
one does succeed in making it into consumer OS will be supported. SLAAC
is going to be the method of choice in the home (lowest common
denominator I'm afraid)... and with IPv4 DNS via DHCPv4 (plus DHCPv6
stateless/RFC5006 for those that support it) I don't think many of us
will have a big problem with name resolution.

My view is simple - let's start with one ::/64 in the home and use IPv4
for DNS transport. Make a best guess at what we should support beyond
that (per above). It's a good start and very achievable with current
protocols. One area in which operators need to voice an opinion is "what
is good enough" for an initial consumer BB offering. Right now the voice
of operators in BBF has been to address an IPv6 architecture with an
eventual IPv4 sunset clause (ie, IPv6-only home networks/hosts!). It
will take operators to let industry forums (IETF and BBF) and vendors
(myself included) what you want to see, and when you want to see it.

If we solve everything today, tomorrow becomes very boring - Job
security and all ;)

And a quick disclaimer, yes I'm a vendor and editor of WT-187 IPv6 for
PPP DSL Access in the Broadband Forum.

Cheers,

-David Miles

-----Original Message-----
From: ausnog-bounces at lists.ausnog.net
[mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of David Hughes
Sent: Tuesday, March 17, 2009 10:57 PM
To: Matthew Moyle-Croft
Cc: iamems at lists.isoc-au.org.au; ausnog at ausnog.net; link at anu.edu.au
Subject: Re: [AusNOG] IPv6 (was Happy Birthday .... AARnet)


On 17/03/2009, at 5:42 PM, dasmo wrote:

>> Once this is fixed and people stop having pissing matches about who  
>> wins (AutoConf, DHCPv6 etc) we'll be sweet and the CPE vendors can  
>> finish their work.

 From your perspective (i.e. many thousands of broadband subscribers),  
if you can show me an autoconf setup that gives out DNS servers etc  
then I think you'll have your answer.  From my perspective (i.e. many  
thousands of content providing end systems), if I can show myself an  
autoconf setup that will populate the DNS so the servers are reachable  
via the Internet then I'll have my answer.

Hmmm, perhaps waiting for autoconf isn't the best option here ......

Looks like we'll be following what we do for v4.  Static v6 addresses  
and a pre-configured first hop (probably a link local to hsrp or vrrp  
in this case) looks like the winner.  But, as we've discussed many  
times before, the technicalities of getting a packet to traverse a  
path between 2 end-systems is nothing compared to the complexities of  
making the OSS and billing software v6 capable.

The important thing here is that we all need to have a crack at this  
thing.  The other option (i.e. not trying to deploy it) looks much,  
much worse in the long run.  If everyone on this list hasn't at least  
applied for a v6 allocation and run up an OSPFv3 / MPBGP config in  
dynamips then I think we might be in a spot of trouble.


David
...
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