Am Dienstag, 25. Juni 2019, 12:47:57 CEST schrieb Bjørn Mork:
Hmm.... I see at https://f-lga1.f.de.net.dtag.de/index.php?pageid=lg that AS3320 seems be missing all the Bytemark IPv6 routes. Looks like they don't have any connectivity to Bytemark's transit upstream, which is AS20860 according to the RIPE db. I believe this is a fault at AS3320. It's not just Bytemark they are filtering out here.
I used the looking glasses at both sites. They don't see each other. I already contacted the peering guy at AS3320. He wrote me that zayo doesn't maintain a "AS-set" anymore, so DTAG cannot filter on it. I have no much clue about bgp, as-sets, peeringdb, rpki and so on. It's not my business. I am just a user/customer of the DTAG and other ISPs. Of course there are discussions about security filtering and money, even if bigger ISPs are involved. In this case it seems to me it's a security thing. For me it is just one connectivity failure. ( I am part of the costumer trial ipv6-only at DTAG) Regards, Thomas