Re: ASN oddity in the routing

[Siyuan Miao <aveline () misaka io>]

The two networks are forging AS path and that's why you're seeing their IP
addresses announced under African ASNs.


On Tue, Jun 7, 2022 at 8:27 PM Ren C. via NANOG <nanog () nanog org> wrote:

> Hello, I am unsure if there is a better place to ask. I am learning
> working on the enabling RPKI and authoritative IRR validation in my day job.
> However, I find some very strange ASN grouped together. I understand
> several do not bother with RPKI or IRR, especially many large tier 1, which
> don't really care or need about other people's transit, but this is very
> small and I do not heard of it before.
>
> In my  logs to see which routes have the broken or malformed , frequently
> it is just omission and incorrect, but there are some very odd situations,
> but it also appears to be verified in other BGP glass.
> Can someone please tell me whether these invalid is a bug in the routing?
> Why are there so many Africa networks going through a small Virginia
> provider and more than half the IP is bogon, but has an IRR entry for the
> wrong provider or it is unrelated? It does not look like the AS is related
> at all, and they are not in the same country, but there is a relationship
> peering.
>
> https://bgp.he.net/AS208254#_peers6
> https://bgp.he.net/AS398481#_peers6
>
> Thank you
>
>
>
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