[ppml] IPv6 flawed?

[Cort Buffington]

Yep, that's right. I really don't do enough meaningful networking to  
speak up here. I should have kept my mouth shut.

On Sep 17, 2007, at 10:58 AM, Owen DeLong wrote:

> Please expand on the following details of your ease of renumbering:
>
> 	1.	How many VPNs did you have terminating on devices in the
> 		space you renumbered at one end with the other end terminating
> 		on devices you did not control?
>
> 	2.	How many external organizations had firewalls you don't control
> 		with policies containing your addresses when you renumbered?
>
> If your answers to questions 1 and 2 are zero or near zero, then, I  
> would
> argue that you have not demonstrated a meaningful difference in the
> effort required to renumber IPv6 vs. IPv4.
>
> Owen
>
> On Sep 17, 2007, at 8:39 AM, Cort Buffington wrote:
>
>> My organization recently changed IPv6 numbers. We had used EUI64
>> addressing on servers and used a "subnetting" scheme that was logical
>> and sustainable. It did not require actually touching any servers to
>> change IPs. It was done as such: Add IP prefix to appropriate router
>> interfaces, run find-replace script to fix prefixes in DNS, wait,
>> remove old IP prefixes from router interfaces.
>>
>> While I  am not trying to diminish the valid conversation about
>> difficulties involved in renumbering, etc., I am actually doing, and
>> have done this. IPv6 is not IPv4, and there are some aspects of it
>> that change the ways things are/can be done. In our experience, the
>> largest hurdle involved in using IPv6 effectively is getting folks to
>> break out of the IPv4 way of thinking. With larger address spaces
>> come the ability to address interfaces, etc. in a more logical way,
>> that when added to some of the nice things like EUI64 addressing, can
>> make "re-numbering" considerably easier.
>>
>>
>> On Sep 17, 2007, at 10:26 AM, Azinger, Marla wrote:
>>
>>> Hmmm...Now...what was that long drawn out conversation....that
>>> addressed private space in a good way.....oh yeah!  ULA-C!
>>>
>>> Cheers!
>>> Marla
>>>
>>> -----Original Message-----
>>> From: ppml-bounces at arin.net [mailto:ppml-bounces at arin.net]On  
>>> Behalf Of
>>> Brian Johnson
>>> Sent: Monday, September 17, 2007 7:00 AM
>>> To: Ted Mittelstaedt; Kevin Kargel; ppml at arin.net
>>> Subject: Re: [ppml] IPv6 flawed?
>>>
>>>
>>> Ted wrote:
>>>>
>>>> You don't understand it because you are large enough to have your
>>>> own allocation.
>>>>
>>>> For the orgs too small to meet justification requirements to get
>>>> a direct allocation of IPv6 from an RIR, it is a big problem.
>>>>
>>>> They do not want to get IPv6 from an ISP AKA "local internet
>>>> registry"
>>>> and put time and money into numbering all their servers and
>>>> suchlike -
>>>> because if they find a better deal down the street from the ISP's
>>>> (I mean local internet registry's) competitor, they want to be free
>>>> to dump the existing ISP and go to the competitor without having to
>>>> renumber internally.
>>>>
>>>> This IMHO is the single largest reason so many orgs adopted NAT.
>>>>
>>>
>>> I agree with Ted that there is a noticeable benefit to having NAT
>>> capability, but not that it is the "single largest reason so many  
>>> orgs
>>> adopted NAT." It does act as a pseudo-security feature, and it does
>>> make
>>> a network "portable".
>>>
>>> I would have no problem with a say a /32 of IPv6 being set aside as
>>> "private space." This will only increase the longevity of IPv6 when
>>> used
>>> by companies who only need limited IP addresses and want to use
>>> private
>>> space and NAT. What arguments are there against this?
>>>
>>> - Brian
>>>
>>> _______________________________________________
>>> PPML
>>> You are receiving this message because you are subscribed to the
>>> ARIN Public Policy
>>> Mailing List (PPML at arin.net).
>>> Unsubscribe or manage your mailing list subscription at:
>>> http://lists.arin.net/mailman/listinfo/ppml Please contact the ARIN
>>> Member Services
>>> Help Desk at info at arin.net if you experience any issues.
>>> _______________________________________________
>>> PPML
>>> You are receiving this message because you are subscribed to the
>>> ARIN Public Policy
>>> Mailing List (PPML at arin.net).
>>> Unsubscribe or manage your mailing list subscription at:
>>> http://lists.arin.net/mailman/listinfo/ppml Please contact the ARIN
>>> Member Services
>>> Help Desk at info at arin.net if you experience any issues.
>>>
>>
>> --
>> Cort Buffington
>> Assistant Director for Technical Services
>> The Kansas Research and Education Network
>> cort at kanren.net
>> Office: +1-785-856-9800 x301
>> Mobile: +1-785-865-7206
>>
>>
>>
>> _______________________________________________
>> PPML
>> You are receiving this message because you are subscribed to the  
>> ARIN Public Policy
>> Mailing List (PPML at arin.net).
>> Unsubscribe or manage your mailing list subscription at:
>> http://lists.arin.net/mailman/listinfo/ppml Please contact the  
>> ARIN Member Services
>> Help Desk at info at arin.net if you experience any issues.
>
>

--
Cort Buffington
Assistant Director for Technical Services
The Kansas Research and Education Network
cort at kanren.net
Office: +1-785-856-9800 x301
Mobile: +1-785-865-7206