[168451] in North American Network Operators' Group
Re: Will a single /27 get fully routed these days?
daemon@ATHENA.MIT.EDU (Sander Steffann)
Sat Jan 25 17:00:05 2014
From: Sander Steffann <sander@steffann.nl>
In-Reply-To: <CAO0o49Ed34gR4x9i2XmzVxoAMv5qA5UJTRHWtawsgp-k03he1A@mail.gmail.com>
Date: Sat, 25 Jan 2014 22:59:40 +0100
To: Drew Linsalata <drew.linsalata@gmail.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Hi,
> Yeah, its been a while since I had to get involved in this. We have a
> customer with their own IPv4 allocation that wants us to announce a =
/27 for
> them. Back in "the day", it was /24 or larger or all bets were off. =
Is
> that still the case now?
This is still the case today.
I wonder what will change (if anything) when ARIN runs out of IPv4 =
space. Geoff's current predictions say Feb 2015, but I wouldn't be =
surprised if it turns out to be sooner than that. 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.
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?
Cheers,
Sander
[1] https://www.arin.net/policy/nrpm.html#four10
