nanog mailing list archives

Re: Dual stack IPv6 for IPv4 depletion


From: Mike Lyon <mike.lyon () gmail com>
Date: Sun, 5 Jul 2015 09:59:51 -0700

I dont think my customers would see it that way. They would say, "we'll
just go with ATT or Comcast instead." Poof, there goes that MRR!

-The other WISP Mike
On Jul 5, 2015 9:54 AM, "Mel Beckman" <mel () beckman org> wrote:

Mike,

They certainly won't like it. But the situation is the same everywhere.
It's not like they're being gouged.

-mel via cell

On Jul 5, 2015, at 9:30 AM, Mike Hammett <nanog () ics-il net> wrote:

You don't work with end-users much, do you? The same types that follow
Free Press and what not about how their ISP breaks it off in their backside
(despite no concrete evidence - see the recent M-Labs, Free Press
incident)... they won't take too kindly to being told to pay more for IPv4
to make whatever game work properly. It has to be seamless and it has to be
free.




-----
Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com



Midwest Internet Exchange
http://www.midwest-ix.com


----- Original Message -----

From: "Mel Beckman" <mel () beckman org>
To: "Josh Moore" <jmoore () atcnetworks net>
Cc: nanog () nanog org
Sent: Sunday, July 5, 2015 10:52:36 AM
Subject: Re: Dual stack IPv6 for IPv4 depletion

Dual-stack doesn't require public IPv4 addresses. Since IPv4 is in short
supply, providers must still do what they can to conserve them. This means
NAT, with appropriate management to not overload any one IP, or CGN if you
want to keep public IPv4 (but no longer unique ones) on CPE. Not every
customer needs direct IPv4 connectivity without NAT; those that do must pay
for it. If those who have it aren't willing to pay, they must give up their
public IPv4 address.

That is the most efficient direct IPv4 provisioning concept we have
today. Given the history of IPv6 adoption, it's clear that people won't
move until they experience pain sticking with IPv4.

"On demand" IPv4 isn't currently being done anywhere AFAIK, and since
we're abandoning IPv4 it's not likely anyone has that on their priority
list. It's not a good policy to go out of your way to make IPv4 users
comfortable. IPv4 is going to go away, and the sooner customers get that
and go to IPv6, the sooner the pain will stop :)

-mel beckman

On Jul 4, 2015, at 6:02 PM, Josh Moore <jmoore () atcnetworks net> wrote:

Traditional dual stack deployments implement both IPv4 and IPv6 to the
CPE.
Consider the following:

An ISP is at 90% IPv4 utilization and would like to deploy dual stack
with the purpose of allowing their subscriber base to continue to grow
regardless of the depletion of the IPv4 space. Current dual stack best
practices seem to recommend deploying BOTH IPv4 and IPv6 to every CPE. If
this is the case, and BOTH are still required, then how does IPv6 help with
the v4 address depletion crisis? Many sites and services would still need
legacy IPv4 compatibility. Sure, CGN technology may be a solution but what
about applications that need direct IPv4 connectivity without NAT? It seems
that there should be a mechanism to enable on-demand and efficient IPv4
address consumption ONLY when needed. My question is this: What, if any,
solutions like this exist? If no solution exists then what is the next best
thing? What would the overall IPv6 migration strategy and goal be?

Sorry for the length of this email but these are legitimate concerns
and while I understand the need for IPv6 and the importance of getting
there; I don't understand exactly HOW that can be done considering the
immediate issue: IPv4 depletion.


Thanks

Joshua Moore
Network Engineer
ATC Broadband
912.632.3161




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