[NANOG] Re: IPv6 Legacy IP Warning Stickers

[John Curran via NANOG <nanog () lists nanog org>]

Jim -

There’s a huge difference between "IPv6 is being deployed” versus “IPv4 is going away”…

IPv6 is necessary to solve a problem that most networks simply don’t have:  i.e., how to handle millions of new devices 
connecting to your network each and every year with no end in sight.  For folks making up the core of the Internet that 
experience such problems, IPv6 is pretty much essential – and its widespread deployment has taken an enormous burden 
off requirements that otherwise would have overburdened the IPv4 address space.

So yes, IPv4 continues to function, but that’s not really “in spite of IPv6” as “because of IPv6”.   There’s no reason 
that folks running IPv4 shouldn’t continue to do so unmolested – if the tool serves the purpose, then that’s perfectly 
fine – as long as the requirements that you face don’t change precipitously, you should be able to use IPv4 for all 
your needs.  (This is particularly the case because the cost burden to interoperate with IPv4-only devices continues to 
be borne by the IPv6 deployers, and that appears to be a reasonably safe assumption for the foreseeable future.)

Thanks,
/John

John Curran
President and CEO
American Registry for Internet Numbers


On Apr 1, 2025, at 4:47 PM, Jim Shankland via NANOG <nanog () lists nanog org> wrote:

I'm not a grumpy old man, but I'm going to play one for a minute.

The case for IPv6 was that the Internet was about to collapse, or at least stall out, unless everybody switched over 
from IPv4. I don't remember when I first heard that claim, but it was definitely in a year that started with a "1".

It may be true eventually, too -- who knows, maybe even soon. And yes, there's been plenty of pain and trouble "behind 
the curtain" along the way. But zoom out to the big picture, and things are still working in IPv4 land. IPv6 will take 
over (perhaps quickly) once that stops.

But until then, stickers and loaded language like "modern" and "legacy" are unlikely to have any effect at all.

I hope it's clear that I'm not arguing against IPv6. I've just been watching the "drop dead" date when the transition 
would be absolutely forced get pushed back for half my professional career: 30 years of "any day now".

Jim Shankland


On 3/27/25 10:07 AM, Lucien Hoydic via NANOG wrote:
Add RCN Chicago (Now Astound), to the list of companies that don't support IPV6.

I'm not "Astound"ed by their lack of support for modern technology


On Wednesday, March 26th, 2025 at 1:00 PM, Andrew Latham via NANOG <nanog () lists nanog org> wrote:


Today yet another ISP is running Fiber in the utility easement at the
street. I checked and they do not offer IPv6 or have ANY IPv6 peering.

I have offered the hard to find IPv6 Legacy Warning stickers on my
Redbubble profile. About a month before any meeting or event I see a bulk
order for Amish IPv6 stickers designed by Phil Benchoff and hard to find
post Google+. I have the markup/profit set to the lowest setting and have
made maybe $8 over 5+ years.

Linky:
https://www.redbubble.com/i/sticker/Legacy-IP-Warning-by-gringomalvado/38585698.EJUG5

Ranting a bit as I have four ISPs boxes at the street and two of them do
not have IPv6 in 2025. Converting my frustration into finding Phil and
sending him some coffee money.

--
- Andrew "lathama" Latham -
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