[190963] in North American Network Operators' Group
Re: Advertising rented IPv4 prefix from a different ASN.
daemon@ATHENA.MIT.EDU (David Bass)
Fri Aug 5 10:10:48 2016
X-Original-To: nanog@nanog.org
From: David Bass <davidbass570@gmail.com>
In-Reply-To: <466f8b9b-8fbe-82be-f4fa-a1fd37896359@seacom.mu>
Date: Fri, 5 Aug 2016 10:10:41 -0400
To: Mark Tinka <mark.tinka@seacom.mu>
Cc: NANOG list <nanog@nanog.org>
Errors-To: nanog-bounces@nanog.org
> On Aug 5, 2016, at 9:52 AM, Mark Tinka <mark.tinka@seacom.mu> wrote:
>=20
>=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 obtain=
ed
>> 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.
I agree with you...not a great practice. Each AS should just announce the p=
refix that they actually use. The school could be used as a transit for the=
ISP, which may be undesirable.=20=
