[193420] in North American Network Operators' Group
Re: IPv6 BGP prefix filters
daemon@ATHENA.MIT.EDU (joel jaeggli)
Mon Jan 16 18:16:44 2017
X-Original-To: nanog@nanog.org
To: Alistair Mackenzie <magicsata@gmail.com>, NANOG <nanog@nanog.org>
From: joel jaeggli <joelja@bogus.com>
Date: Mon, 16 Jan 2017 14:21:06 -0800
In-Reply-To: <CA+bbMku0CvzTD+dhzipm-kmfLD7np_oAtSb8e1kGnBcZf7G15w@mail.gmail.com>
Errors-To: nanog-bounces@nanog.org
This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
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From: joel jaeggli <joelja@bogus.com>
To: Alistair Mackenzie <magicsata@gmail.com>, NANOG <nanog@nanog.org>
Message-ID: <1b2186ad-e84a-9a00-947c-aaafa9eceb6b@bogus.com>
Subject: Re: IPv6 BGP prefix filters
References: <CA+bbMku0CvzTD+dhzipm-kmfLD7np_oAtSb8e1kGnBcZf7G15w@mail.gmail.com>
In-Reply-To: <CA+bbMku0CvzTD+dhzipm-kmfLD7np_oAtSb8e1kGnBcZf7G15w@mail.gmail.com>
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On 1/16/17 2:01 PM, Alistair Mackenzie wrote:
> Hi,
>=20
> So recently I've come across an issue with a large ISP announcing a /22=
and
> /25 of IPv6 space. We are currently filtering <28 and >48 which until n=
ow
> has worked fine for us.
>=20
> What are others using as their prefix filters in the DFZ?
Currently the shortest prefix delegation to an RIR is a /12, the
assigned global uni-cast range at present all fits within 2000::/3.
I currently apply < 20, > /48 but I also have recourse to default.
> Thanks,
> Alistair
>=20
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