Re: What is BCP re De-Aggregation: strict filtering /48s out of /32 RIR minimums.

[William Herrin <bill () herrin us>]

On Wed, Nov 14, 2012 at 8:10 AM, Ben S. Butler
<Ben.Butler () c2internet net> wrote:
> So what is the "best" answer.
>
>
> 1>     Don't advertise islands of space under assignment minimum, without providing a covering aggregate route?
>
> 2>     Don't use strict filters, they don't work well and de-agragegation with IPv6 is going to be a problem?
>
> 3>     Don't use filters, generate it from an IRR?
>
> Given there is no "right" answer what is considered to be the best fit one?

IMHO:

4) Use mild filters (e.g. allow a /32 to be disaggregated to /36's)
and send a polite email to the POC to the effect of, "Please beware
that because you have not offered a covering route matching your
allocation, your IPv6 network is not reachable from ours. IPv6 is not
IPv4: end users requiring /48s for multihoming should get them
directly from the RIR. For complete Internet connectivity, we strongly
encourage you to offer a covering route."

Regards,
Bill Herrin


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