[ppml] Policy Proposal 2006-7: Changes to IPv6initialallocation criteria - revised text

JORDI PALET MARTINEZ jordi.palet at consulintel.es
Tue Feb 27 02:46:07 EST 2007

Agree with the point on the expired draft, but my question is precisely to
see if there is interest in rescuing it, as it also seems useful for other
cases, as it was made clear in the last ARIN meeting.

In fact, it can be seen as a new way for doing the same as RFC1918 in IPv4.
The main difference is that in IPv6 you don't need to NAT, because you can
use both addressing spaces in the same interface, the "private one" (ULA or
ULA-central, depending on the case) and global unicast (for "non-private"


> De: <michael.dillon at bt.com>
> Responder a: <ppml-bounces at arin.net>
> Fecha: Thu, 22 Feb 2007 10:22:47 -0000
> Para: <ppml at arin.net>
> Conversación: [ppml] Policy Proposal 2006-7: Changes to IPv6initialallocation
> criteria - revised text
> Asunto: Re: [ppml] Policy Proposal 2006-7: Changes to IPv6initialallocation
> criteria - revised text
>> Quick question. Are those addresses being advertised to
>> Internet ? If not,
>> you could use ULA-central ?
> There is no such thing. Google shows me that ULA-central is something
> that was described in an IETF draft which has since expired. Expired
> draft documents are meaningless as far as ARIN policy is concerned.
> On the other hand, RFC 2050 is an IETF Best Practice document that is
> the foundation of the entire RIR system. In section 3 "Assignment
> Framework" it explicitly states:
>  In order for the Internet to scale using existing technologies, use
>  of regional registry services should be limited to the assignment of
>  IP addresses for organizations meeting one or more of the following
>  conditions:
>  a)  the organization has no intention of connecting to
>      the Internet-either now or in the future-but it still
>      requires a globally unique IP address.  The organization
>      should consider using reserved addresses from RFC1918.
>      If it is determined this is not possible, they can be
>      issued unique (if not Internet routable) IP addresses.
> The reference to RFC 1918 is for private networks, i.e. networks that
> are under one single administrative control and will never interconnect
> with another network. It is also an IPv4 specific concept so it does not
> apply to IPv6.
> --Michael Dillon
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