Routing problems to 2400:CB00::/32 CLOUDFLARE

Laurent GUERBY laurent at
Sat Jun 16 15:00:03 CEST 2012

On Fri, 2012-06-15 at 18:28 +0200, Chris Welti wrote:
> Hello Tom,
> Then you should have applied for /48 portable address space for all your different regions.
> APNIC has a separate address space for this in 2001:0C00:/23
> See
> We strictly filter by minimum allocation polices of the RIR and don't make exceptions.


Out of curiosity do you follow current RIPE PA filtering recommendation?
It is suggested that prefix filters allow for prudent subdivision of an
IPv6 allocation. The operator community will ultimately decide what
degree of subdivision is supportable, but the majority of ISPs accept
prefixes up to a length of /48 within PA space.

> The problem with just accepting all /48 is that you end up with a lot of unnecessary /48 deaggregations in the table, even if there
> would be a covering /32.
> Btw within your AS you should be able to route all your prefixes yourself, otherwise it wouldn't be an autonomous system :)
> Regards,
> Chris

Our experience operating a /40 PA from RIPE is that a very low number of
AS filter at /32 on RIPE PA space and thus do not follow RIPE-532: based
on our users feedback we found only 3, one of which has announced it
will try to follow RIPE-532 in the future.


AS197422 2a01:6600:8000::/40

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