IPv6 filtering (was Re: IPv6 internet broken, cogent/telia/hurricane not peering)
marcoh at marcoh.net
Mon Oct 12 19:24:15 UTC 2009
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,
>> 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
Just a few cents,
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