Re: IPv4 flag day

[Matthew Petach via NANOG <nanog () lists nanog org>]

On Wed, Jun 17, 2026, 00:32 Marco Moock via NANOG <nanog () lists nanog org>
wrote:

> Am 17.06.26 um 08:29 schrieb Vasilenko Eduard via NANOG:
> > Has any CPE vendor implemented the redundancy NPTv6 scheme (with all
> IPv6 features) that Matthew mentioned for NAT44?
>
> No, as normal CPE devices are used by home users. They don't need that.
> Business users buy professional devices and use BGP or other routing
> protocols for real redundancy.


*facepalm*

No, my small business with 15 people doesn't buy Juniper routers with two
BGP upstreams and pay ARIN for an ASN and provider independent IP space.

But it *does* still want to be able to get work done on the Internet when
ISP A goes down by using ISP B.

You seem to be denying the existence of all the small businesses in the
world.
Given that Google estimates there are 200 to 400 million enterprises with
less than 50 employees worldwide,  that's a pretty big chunk of the
business world to ignore.

Or are you suggesting that 400 million small businesses should get their
own ASNs and provider independent IPv6 space, and use BGP to gain
redundancy for their businesses?

(talk about driving a demand for more router RAM for the DFZ core!   ;-P )


> > Reminder: 6man WG makes all possible efforts to block NPTv6.
>
> It already exists, IIRC Cisco IOS supports that.


Too bad every small business using edgeOS or Vyatta or routerOS is left
out--no NPTv6 or NAT66 for them.  But that was some pretty good shilling
for Cisco there.  ;)

In all seriousness, I hope we're coming to the realization that there's a
big use case that is not currently well supported on the V6 world, and
telling hundreds of millions of small businesses to add to the BGP-speaking
core routing tables is probably *not* the right answer.  Unless of course
you want Geoff Huston to do a NANOG talk entitled "What The Hell Just
Happened?" with a hockey-stick shaped graph showing the number of ASNs in
the v6 routing tables.  :/

In summary: there are still technical hurdles to deploying IPv6 that we
created through our decisions long ago that need to be solved before we can
start talking about sunsetting IPv4.

Thanks!

Matt



> --
> Gruß
> Marco
> Muell und Spam bitte an abfalleimer2002 () stinkedores dorfdsl de
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