[168463] in North American Network Operators' Group
Re: Will a single /27 get fully routed these days?
daemon@ATHENA.MIT.EDU (Owen DeLong)
Sun Jan 26 03:17:41 2014
From: Owen DeLong <owen@delong.com>
In-Reply-To: <25FB4102-C989-4C55-A883-46B5FDE52B4F@steffann.nl>
Date: Sun, 26 Jan 2014 00:12:10 -0800
To: Sander Steffann <sander@steffann.nl>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Jan 25, 2014, at 23:56 , Sander Steffann <sander@steffann.nl> wrote:
> Hi Owen,
>=20
> Op 26 jan. 2014, om 05:36 heeft Owen DeLong <owen@delong.com> het =
volgende geschreven:
>=20
>> On Jan 25, 2014, at 13:59 , Sander Steffann <sander@steffann.nl> =
wrote:
>>=20
>>> Hi,
>>>=20
>>>> [=85] But, when that happens ARIN will only have the 'Dedicated =
IPv4 block to facilitate IPv6 Deployment' [1] left, and it will use 'a =
minimum size allocation of /28 and a maximum size allocation of /24' for =
that block. The block is meant for things like dual stacked DNS servers, =
NAT64 and other IPv6 deployments where a bit of IPv4 is still necessary.
>>>=20
>>> I wonder how reachable those systems will be... Will people adjust =
their filters, or will most usage of this block (and thereby all new =
entrants in the ISP market in the ARIN region) just be doomed?
>>=20
>> That's actually may not be the best question. That block will come =
from within a specific prefix and I suspect that ISPs and the like will =
adjust their filters FOR THAT PREFIX.
>=20
> Same question=85 Will people adjust their filters, (even if only for =
that prefix)? All over the world? I think 'will adjust their filters for =
XYZ' is highly optimistic, but let's hope it will work, otherwise the =
ISPs in the ARIN region will have a problem. (Or maybe not: existing =
ISPs (for who a /2[4-8] is not a significant amount) might not mind if a =
new competitors only gets a /2[5-8] that they cannot route globally. But =
I really hope it doesn't come to that.)
>=20
Realistically, anyone depending on IPv4 is going to has a growing =
problem which will only continue to grow.
> But more important: which /10 is set aside for this? It is not listed =
on https://www.arin.net/knowledge/ip_blocks.html
I'm not sure it has been determined yet, let alone announced.
>=20
>> Consider the possibility of a policy change which allows the transfer =
of smaller blocks (current ARIN policy limits this to /24 minimum, but =
ARIN policy is not immutable, we have a policy development process so =
that anyone who wants to can start the process of changing it.)
>=20
> I=92m well aware of that, but I=92ll stick to RIPE policies for now =
:-)
I admit I'm not familiar with the details of the RIPE policy in this =
regard. Do they allow longer prefixes to be transferred and/or acquired?
I will point out that the NA in NANOG mostly refers to the ARIN region.
Owen
