Re: [Re: http://tools.ietf.org/search/draft-hain-ipv6-ulac-01]

[Mark Smith <nanog () 85d5b20a518b8f6864949bd940457dc124746ddc nosense org>]

On Sun, 25 Apr 2010 13:21:16 -0400
Richard Barnes <richard.barnes () gmail com> wrote:

> Moreover, the general point stands that Mark's problem is one of bad
> ISP decisions, not anything different between IPv4/RFC1918 and IPv6.

My example, although a bit convoluted to demonstrate a point, is about
robustness against Internet link failure. I don't think people's
internal connectivity should be dependent on their Internet link being
available and being assigned global address space. That's what the
global only people are saying.

(how is the customer going to access the CPE webserver to enter ISP
login details when they get the CPE out of the box, if hasn't got
address space because it hasn't connected to the ISP ...)
> On Sun, Apr 25, 2010 at 11:48 AM, Owen DeLong <owen () delong com> wrote:
> > On Apr 25, 2010, at 8:17 AM, Tony Hoyle wrote:
> >
> > > -----BEGIN PGP SIGNED MESSAGE-----
> > > Hash: SHA1
> > >
> > > On 25/04/2010 03:01, Mark Smith wrote:
> > > > I'm a typical, fairly near future residential customer. I have a NAS
> > > > that I have movies stored on. My ISP delegates an IPv6 prefix to me with
> > > > a preferred lifetime of 60 minutes, and a valid lifetime of 90 minutes
> > >
> > > What ISP would put a 'lifetime' on your ipv6 prefix?  That seems insane
> > > to me... they should give you a /48 and be done with it.  Even the free
> > > tunnel brokers do that.
> > >
> > > But then I never understood dynamic ipv4 either....
> > If they are using DHCP-PD, then, it comes with a lifetime whether it is
> > static or not.
> >
> > The reality is that unless they need to renumber you, you'll probably get
> > a new RA with the 60/90 minute lifetimes specified each time RAs are
> > sent and your counters will all get reset to 60/90 for the foreseeable
> > future.  The preferred and valid lifetimes aren't limitations, they're
> > minimums.  The prefix should be yours and should be functional for
> > you for AT LEAST the valid lifetime.
> >
> > Owen