Re: [ipv6-wg@localhost] Re: [lir-wg] IXP networks routing

[Gert Doering <]

Hi,

On Tue, Mar 04, 2003 at 03:11:38PM +0100, Lars Erik Gullerud wrote:
> Let me put it this way, what services do the IXP operators run outside
> the mesh that absolutely requires IPv6 space and is considered
> "critical", from the perspective of requiring globally routable space? I
> would imagine that by the time the needs can no longer be solved through
> IPv4, a solution to the whole multihoming/PI problem has already been
> solved, otherwise I don't think that time WILL come.

I consider this approach ("the IPv6 rules have a problem here, so let's
do this with IPv4") flawed.

The issue is twofold:

 - address space for the peering mesh, which is unique, not tied to
   any of the members, and easy to get: available & solved.

 - address space for additional services (secondary name servers, web
   servers for members / global information, mail servers, etc.) - all 
   things that obviously *need* global connectivity.

As a solution for the second problem, I think that "using upstream space"
*is* a workable solution, at least to start with.  Right now I consider
it more important to actually get IPv6 services up and running than to
endlessly discuss why it's not possible to do IPv6.  When doing this, 
one needs to be prepared to renumber - which is pretty easy, when done
right (generate DNS zones, firewall rules, and whatever you need from
templates that contain $CURRENTPREFIX, possibly multiple of them).

In the long run, one of the multihoming solutions might "really" solve 
the problem, or we might end up needing "real IPv6 PI space" for the
exchange points.  (And big enterprises.  And universities.  And so on.)

But this "future plans" shouldn't stop people from deploying IPv6 for
infrastructure things *today*.

Gert Doering
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