[190968] in North American Network Operators' Group
Re: Advertising rented IPv4 prefix from a different ASN.
daemon@ATHENA.MIT.EDU (Theodore Baschak)
Fri Aug 5 12:04:29 2016
X-Original-To: nanog@nanog.org
From: Theodore Baschak <theodore@ciscodude.net>
In-Reply-To: <466f8b9b-8fbe-82be-f4fa-a1fd37896359@seacom.mu>
Date: Fri, 5 Aug 2016 11:04:22 -0500
To: Mark Tinka <mark.tinka@seacom.mu>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> On Aug 5, 2016, at 8:52 AM, Mark Tinka <mark.tinka@seacom.mu> wrote:
>=20
>=20
> On 5/Aug/16 15:40, Soon Keat Neo wrote:
>=20
>> If you are just announcing more specific address space that you've =
obtained
>> legitimately off their assigned address space, it should be no =
problem,
>> just obtain an LoA and register it on the different databases and you
>> should be set to ask your upstreams to allow the announcements.
>=20
> Do people actually do this? A customer asked us to do this for them =
and
> we refused, because inconsistent AS has never been a thing.
>=20
> I'm apprehensive about a subnet and its aggregate appearing from
> multiple AS's at the same time. But, I'm old school, so...
>=20
> Mark.
Yes, this is quite prevalent. For example a popular resolver within =
prefix 8.8.8.0/24 (and also 8.8.4.0/24) has 8.0.0.0/9 advertised by =
3356.
Theodore Baschak - AS395089 - Hextet Systems
https://ciscodude.net/ - https://hextet.systems/
https://theodorebaschak.com/ - http://mbix.ca/
