[ppml] IPv6 flawed?

[Kevin Kargel]

Great to hear of a real-world use case.  Thank you!

Kevin

> -----Original Message-----
> From: ppml-bounces at arin.net [mailto:ppml-bounces at arin.net] On 
> Behalf Of Cort Buffington
> Sent: Monday, September 17, 2007 10:39 AM
> To: ppml at arin.net
> Subject: Re: [ppml] IPv6 flawed?
> 
> 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
> >
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> 
> --
> 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
> 
> 
> 
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