[arin-ppml] Encouraging IPv6 Transition (was: Clarify /29 assignment identification requirement)
Jimmy Hess
mysidia at gmail.com
Mon May 14 22:39:01 EDT 2012
Telephone number is also not the only option, btw. The longest IPv4
prefix ARIN allocates is a /24.
Another option is set aside a /8, under which
every ARIN /24 IPv4 allocation is automatically mapped to a unique global
unicast /32 IPv6 allocation; that is... under the /8, the
assigned /24 IPv4 prefix bits are used to populate 24 bits in the IPv6 prefix.
And if the ARIN IPv4 allocation happened to be a /20 instead, that
would mean
that the mapped space has an address size of /28.
The disadvantage is it requires a prior address assignment from ARIN.
And extra work to make sure an org id with multiple IPv4 allocations can only
have one of them mapped at a time to an IPv6 allocation.
On 5/14/12, Jimmy Hess <mysidia at gmail.com> wrote:
> On 5/14/12, Owen DeLong <owen at delong.com> wrote:
> [snip]
>> Ick! I really don't want to have to renumber my IP network every time my
>> telephone number changes. I don't know where you live, but, in the US,
>> there
>> is virtually no such thing as a "permanent" telephone number.
>
> Huh? Phone numbers are actually owned by the end customer, not the
> telco, as long as they maintain phone service, and they are therefore
> much more permanent than IP addresses. You actually own your phone
> number, you don't actually own IP addresses that you are assigned.
> A key difference: Phone numbers are even portable between providers
> and to/from local cell phone providers, as long as the end user org
> maintains phone service, you can't do the same with PA address
> assignments in IPv4 or IPv6.
>
> The ability to maintain permanent ownership is what makes the phone
> number a perfect identifier to leverage for IP address automatic
> assignment. The organization just needs to use some care, and make
> sure to pick a phone number, such as their 800#, they already have to
> indefinitely maintain for other business purposes.
>
> Businesses spend large amounts of advertising dollars publishing their
> phone numbers which are used by their customers, in advert material,
> directories, etc; it would be a pretty big disaster if their number
> "changed", as they would now be losing business.
>
> Organizations' contact numbers are not like your home phone number
> that you can change all the time without a big disadvantage.
>
>
> --
> -JH
>
--
-Mysid
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