[db-wg] IPv6 transition mechanism prefixes (Was: Bogon cleanup -- Current anomalies)

oops, I replied about this to the previous thread, didn't realize it had
split.
https://www.ripe.net/ripe/mail/archives/db-wg/2021-July/007118.html

-Cynthia

On Wed, Jul 21, 2021 at 12:08 AM Job Snijders via db-wg <db-wg at ripe.net>
wrote:

> Hello db group,
>
> On Tue, Jul 20, 2021 at 10:11:46PM +0200, Edward Shryane via db-wg wrote:
> > According to the implementation plan:
> > https://www.ripe.net/ripe/mail/archives/db-wg/2021-March/006876.html
> >
> > if these ranges are not marked as "available" or "reserved" in an
> > RIR's delegated stats, then it will be skipped, and I didn't find
> > 192.88.99.0/24 in any RIR's delegated stats.
> >
> > (To Ronald and the list) Should we add other sources of bogon prefixes
> > (e.g. RFC 3068) to the implementation?
>
> RFC 3068 was obsoleted by RFC 7526, a document that 'deprecates'
> 192.88.99.0/24. The whole thing is here:
> https://www.rfc-editor.org/rfc/rfc7526.html
>
> Unfortuntaly, RFC 7526 is not entirely clear on what 'deprecation' means
> in context of for example the 'Forwardable' and 'Globally Reachable'
> colums of the "IANA IPv4 Special-Purpose Address Registry" table at:
>
> https://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
>
> The goal of RFC 7526 seems to be to discourage further growth of the
> 6to4 anycast network, but doesn't specify what should happen with
> existing 6to4 deployments (other than needing to be 'reviewed').
>
> I personally probably wouldn't object to the removal of
> 'route: 192.88.99.0/24' objects from the RIPE-NONAUTH database, but some
> quick testing on my personal Internet connection shows 6to4 instances
> still ping and forwarding paths to 192.88.99.1 still exist. I know of
> some corporate ISPs that block 192.88.99.0/24, but clearly not every
> operator filters. What does this mean?
>
> Perhaps the topic of what to do IPv4/IPv6 transition prefixes in the
> RIPE-NONAUTH DB should be brought up in the RIPE IPv6 WG?
>
> Kind regards,
>
> Job
> (speaking as db-wg enthusiast)
>
>
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