Re: [v6ops] I-D Action: draft-ietf-v6ops-unique-ipv6-prefix-per-host-07.txt

[Gert Doering <[e-mail]>]

Hi,

On Thu, Aug 10, 2017 at 11:24:48AM +1000, Mark Smith wrote:
> > And yes, I think this is extremely wastive, well over the limits of what
> > is normal "do not care about wasting addresses!" level of IPv6 normal.
> 
> So it's worth considering what the word "waste" means. It means
> getting no value at all from some quantity of a resource. That
> quantity of resource isn't being used for anything of value to the
> resource's user.

Waste can also mean "I have used up something without actually needing
it, and now it's missing somewhere *else*".

[..]
> > Should this topic come up in RIPE policy discussion, I'll chair the
> > discussion and refrain from having an opinion, but will reserve the right
> > for a "told you so" later.
> 
> I assume RIPE give out /32s as the minimum to an ISP, or 4+ billion
> /64s? If an ISP isn't giving out at least /56s to customers, the
> problem isn't with the /64 boundary, it is the ISP carrying IPv4
> address scarcity management practices over to IPv6 where they aren't
> needed.

So how useful is a /56 to a customer if the customer wants to do
/64-per-host?

If it's /64-per-LAN, a /56 is a useful value, but for /64-per-Host it's
all of a sudden becoming tight for slightly larger customer sites.

> We are wasting our time (getting no value from it) trying to
> accommodate unneeded IPv4 practices carried over to IPv6. We end up
> trying to make things accommodate more and more perverse and
> unnecessarily conservative IPv4 carried over practices. If we
> accommodate them, we're also tacitly endorsing them.

I could point out that "a /64 everyhwere" is repeating the "Class A, B, C"
mistakes from IPv4.

Your turn.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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