Concerning the structure of ASPA tables and AS0

[Maria Matejka]

Hello Ralph,

> > 
> > I talked to Job.  It looks like they have no interest in easing the
> > transition for stragglers who are still announcing AS_SETs in their
> > AS_PATHs.
> > 
> > All AS_SETs should result in ASPA_INVALID.
> > 
> > I also just learned the Dutch have a saying... "soft doctors make wounds
> > stink".
> 
> At one point it seems like there was a helper function already written for
> this that has been lost in time.  It used to be right next to
> as_path_contains_confed() in the code.
> 
> Maybe its time to bring it back? :-)

Well, maybe as a method for an AS Path in filters, to allow people
reject and log these paths.

Definitely not to be used in the ASPA check. With that, we are on the same
page as Job. Also, there is an upcoming RFC draft banning AS_SETs
altogether, and we are very much looking forward to implementing it.

<https://datatracker.ietf.org/doc/draft-ietf-idr-deprecate-as-set-confed-set/>

Thank you for your understanding.

Maria

-- 
Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.
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