Re: IP4 Space - the lie

[Owen DeLong <owen () delong com>]

If I can try to re-rail the train of this discussion a bit...

1.      Yes, dual-stacking may require as many IPv4 addresses as IPv6
        addresses.  However, in this case, I was referring to dual-stacking
        as meaning adding IPv6 capabilities to your existing IPv4 hosts and
        infrastructure, thus, implying that the IPv4 addresses were already
        present on said hosts.

2.      If we dual-stack enough of the IPv4 network quickly (and it really
        isn't that hard, folks), then, adding IPv6-only hosts later really
        isn't nearly as bad as it is perceived today.  After all, the major
        drawback to adding an IPv6-only host today is that it can't
        reach all the IPv4-only servers it may want to get stuff from.
        If we dual-stack most or all of those servers (which already
        have IPv4 addresses on them now, so, no additional
        IPv4 depletion is required on that part), then, when we're
        out of IPv4 for new hosts, an IPv6-only host is not a
        uselessly crippled host.

Owen

On Mar 5, 2010, at 10:40 PM, Dan White wrote:

> On 05/03/10 12:39 +0000, bmanning () vacation karoshi com wrote:
> > > I *wholeheartedly* agree with Owen's assessment. Even spending time
> > > trying to calculate a rebuttal to his numbers is better spent moving
> > > toward dual-stack ;)
> > > Nice.
> > > Steve
> >
> >
> >      er... what part of dual-stack didn't you understand?
> >      dual-stack consumes exactly the same number of v4 and v6 addresses.
>
> I would expect the number of v6 addresses assigned to a host to be a
> multiple of the number of v4 addresses, depending on the type of host.
>
> >      if you expect to dual-stack everything - you need to look again.
> >      either you are going to need:
> >
> >      lots more IPv4 space
> >
> >      stealing ports to mux addresses
> >
> >      run straight-up native IPv6 - no IPv4 (unless you need to talk to       a v4-only host - then use IVI or 
> > similar..)
> >
> >      imho - the path through the woods is an IVI-like solution.
>
> Or, dual stack today. When you've run out of IPv4 addresses for new end
> users, set them up an IPv6 HTTP proxy, SMTP relay and DNS resolver and/or
> charge a premium for IPv4 addresses when you start to sweat.
>
> -- 
> Dan White