the semantics of AS0 in ROAs

[Christoph]

>> As I understand it BIRD's ROA check as seen in the
>> documentation will return a RPKI validity state of VALID
>> if the last AS_PATH item was of type AS_SET and the
>> address holder created a ROA with AS0 for it.
> 
> That is a good point, but the ROA check verifies that ASN is non-zero
> in order to success:
> 
>   if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
>     return ROA_VALID;
> 
> So it should be correct.
> 

I assume 'asn' is the equivalent of 'bgp_path.last' there.

Thanks for getting back to me and verifying that there
is no issue so fast, really appreciated!