[81915] in North American Network Operators' Group
Re: OMB: IPv6 by June 2008
daemon@ATHENA.MIT.EDU (David Conrad)
Sun Jul 3 15:04:07 2005
In-Reply-To: <42C81D88.9080207@peter-dambier.de>
Cc: nanog@merit.edu
From: David Conrad <david.conrad@nominum.com>
Date: Sun, 3 Jul 2005 12:00:57 -0700
To: peter@peter-dambier.de
Errors-To: owner-nanog@merit.edu
On Jul 3, 2005, at 10:16 AM, Peter Dambier wrote:
> The good thing with IPv6 is autoconfiguration. There is no need to
> renumber.
I wasn't aware IPv6 auto-configuration:
- updated AAAAs and PTRs for all possible entries DNS associated with
the old address, including the glue records maintained by other folks.
- updated filters, firewalls, and security credentials bound to the
old address.
- updated router configurations, network management, and monitoring
systems.
- updated node locked software licenses (should they exist).
- updated configuration files that include IP addresses.
- provided a mechanism to transfer long running TCP sessions to the
new address.
etc.
Of course, if you talk to many large enterprise IT folks about IPv6
stateless auto-configuration, they look at you in horror and ask "why
in the world would I want to let simply anyone attach to my network
and get a valid address?!?".
Auto-configuration (stateless or statefull) helps in renumbering. It
doesn't remove the requirement however. And since there will be the
requirement, someone will address it in the obvious (if arguably
stupid) way: NATv6.
> I have given up writing a new peace of software every now and then to
> fix a new protocol broken on my NAT-router.
I'm well aware of the many problems NAT creates, particularly when
folks come up with protocols that (perhaps even purposefully) don't
recognize the simple fact that NAT exists. However, pretending that
IPv6 is a panacea is silly. IPv6 dealt with the address space
limitations found in IPv4 (although there are those who believe the
way IPv6 is being allocated results in the IPv6 truck trying to drive
into the IPv4 swamp yelling "me too! me too!" (paraphrasing and with
apologies to Dave Clark)). IPv6 didn't deal with routing scalability
or insuring packets are coming from and/or going to where they
should. However, I'm sure something will be hacked together if IPv6
takes off. Necessity is a mother and all that...
Rgds,
-drc
