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IPv6 /20 allocated - update your BGP filters!
- From: Jeroen Massar
- Date: Mon May 10 12:03:43 2004
Here is a message forwarded for Gert Doering:
From: Gert Doering <firstname.lastname@example.org>
To: 6bone@ISI.EDU, email@example.com
Subject: /20 allocated - update your BGP filters!
Date: Mon, 10 May 2004 17:56:51 +0200
the first IPv6 /20 allocation ever has been made today:
descr: PROVIDER Local Registry
descr: TeliaSonera AB
and this means that "if you have been following my filtering
recommendations, this network will not be accepted right now" (the
current filters had a minimum accepted prefix length of a /24).
I have updated the prefix filter recommendation page:
and urge you to check whether your filters are prepared for these
large prefixes. (There is a /23 upcoming, and rumors speak of a
/19 being requested "real soon now").
TODO: the "strict" filter could do some grouping for different
IPv6 allocation ranges, but this is dangerous today, as we
don't know how future allocations will look like.
Note: ICANN just doesn't get it. They have not allocated a reasonable
prefix size to RIPE (like a /8), not even a /19, but "a big chunk of
14 sucessive /23s, summing up to a /20+/21+/22" - see the list at
-- RIPE Address Policy WG Co-Chair,
keeper of the IPv6 filter list
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