[87815] in North American Network Operators' Group
Re: do bogon filters still help?
daemon@ATHENA.MIT.EDU (william(at)elan.net)
Wed Jan 11 16:47:32 2006
Date: Wed, 11 Jan 2006 13:47:00 -0800 (PST)
From: "william(at)elan.net" <william@elan.net>
To: Florian Weimer <fw@deneb.enyo.de>
Cc: nanog@nanog.org
In-Reply-To: <87mzi2h57u.fsf@mid.deneb.enyo.de>
Errors-To: owner-nanog@merit.edu
On Wed, 11 Jan 2006, Florian Weimer wrote:
>>> You should move 192.88.99.0/24 from SPECIAL to YES (although you
>>> shouldn't see source addresses from that prefix, no matter what the
>>> folks at bit.nl think). 169.254.0.0/16 should be NO (otherwise it
>>> wouldn't be link-local).
>>
>> I think you just explained it yourself why this is "SPECIAL", i.e.
>> routing of it depends on local policies and setup. Anything where it
>> is not clear from RFCs if it should be routable or not and where it
>> depends on local decisions & policy is what I called SPECIAL.
>
> Uhm, no. 6to4 anycast only works without hickups when the prefix is
> NOT treated in any special way. 8-) That's part of its charm. If
> operators start to install special filters, they break this
> functionality for no real gain.
I think this is still quite a bit of a special case as opposed to for
example 24/8 block which is ultimately used same as regular RIR blocks.
Nevertheless I changed routing to "YES" and leave explanation for future.
I also did update and listed comment for reserved blocks with explanation
that either regularly updated filters should be used or blocks should be
left fully routable.
--
William Leibzon
Elan Networks
william@elan.net
