[118083] in North American Network Operators' Group
IPv6 filtering (was Re: IPv6 internet broken,
daemon@ATHENA.MIT.EDU (Marco Hogewoning)
Mon Oct 12 15:25:13 2009
From: Marco Hogewoning <marcoh@marcoh.net>
To: Jack Bates <jbates@brightok.net>
In-Reply-To: <4AD37FF8.2010303@brightok.net>
Date: Mon, 12 Oct 2009 21:24:15 +0200
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Oct 12, 2009, at 9:14 PM, Jack Bates wrote:
> Dan White wrote:
>> Reputation lists will just be on the /64, /56 and /48 boundaries,
>> rather
>> than IPv4 /32.
>
> And then people will scream because someone setup a layout that
> hands out /128 addresses within a /64 pool.
There is that chance yes especially from access networks which use RA.
As this thread has drifted off topic any way, would it for instance be
a good idea to simply not accept mail from hosts that clearly use
autoconfig ie reject all smtp from EUI-64 addresses. Of course not a
wise idea for your own outbound relays which should handle mail from
your customers but on the incoming side it might as well save a lot of
headache and there is no need to keep track of which /64 are access
networks.
Just a few cents,
MarcoH
