[184331] in North American Network Operators' Group
Re: How to wish you hadn't forced ipv6 adoption (was "How to force
daemon@ATHENA.MIT.EDU (Rob McEwen)
Fri Oct 2 02:09:04 2015
X-Original-To: nanog@nanog.org
To: nanog group <nanog@nanog.org>
From: Rob McEwen <rob@invaluement.com>
Date: Fri, 2 Oct 2015 02:09:00 -0400
In-Reply-To: <20151002051010.911C43923631@rock.dv.isc.org>
Errors-To: nanog-bounces@nanog.org
On 10/2/2015 1:10 AM, Mark Andrews wrote:
> or working out how many addresses a
> site needs when handing out address blocks
At first, I'm with you on this.. but then when you got to the part I
quoted above...
it then seems like dividing lines can get really blurred here and this
statement might betray your premise. A site needing more than 1
address... subtly implies different usage case scenarios... for
different parts or different addresses on that block... which could slip
back into... "you blocked my whole /48... but the spam was only coming
from this tiny corner of the block over here (whether that be a one IP,
a /64, or a /56)... and now other parts of the block that were sending
out legit mail, are suffering".
Likewise, sub-allocations can come into play, where a hoster is
delegated a /48, but then subdivides it for various customers.
--
Rob McEwen
+1 478-475-9032
