[131278] in North American Network Operators' Group
=?windows-1252?Q?Re=3A_Why_ULA=3A_low_collision_chance_=28Was=3A_IPv6_fc00=3A=3A=2F?=
daemon@ATHENA.MIT.EDU (William Herrin)
Thu Oct 21 20:09:47 2010
In-Reply-To: <4CC0BE69.8050207@bogus.com>
From: William Herrin <bill@herrin.us>
Date: Thu, 21 Oct 2010 20:09:16 -0400
To: Joel Jaeggli <joelja@bogus.com>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Thu, Oct 21, 2010 at 6:27 PM, Joel Jaeggli <joelja@bogus.com> wrote:
> On 10/21/10 6:02 AM, William Herrin wrote:
>> On Thu, Oct 21, 2010 at 8:14 AM, Ray Soucy <rps@maine.edu> wrote:
>>> That's assuming ULA would be the primary addressing scheme used. =A0If
>>> that became the norm, I agree, the extra uniqueness would be
>>> desirable, perhaps to the point that you should be asking an authority
>>> for FC00::/8 space to be assigned. =A0But then why wouldn't you just as=
k
>>> for a GUA at that point.
>>
>> Because you might want space that doesn't route on the Internet so
>> that if your routes accidentally leak external folks still can't reach
>> you?
>
> Announce your gua and then blackhole it and monitor your prefix. you can
> tell if you're leaking. it's generally pretty hard to tell if you're
> leaking rfc 1918 since your advertisement may well work depending on the
> filters of your peers but not very far.
Joel,
I have a condensate overflow pan under my computer room air
conditioner that collects water if it leaks. I also have an alarm that
alerts me if there's a leak and careful maintenance to prevent it from
leaking in the first place. But I still have the pan. Even though a
leak could fill the pan and overflow, I insist on having a pan there
to try to catch the water.
How many guesses do you need to figure out why?
Regards,
Bill Herrin
--=20
William D. Herrin ................ herrin@dirtside.com=A0 bill@herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004
