On Fri, Aug 26, 2022 at 5:49 AM Bjoern Franke via NANOG <nanog@nanog.org> wrote:
Hi, while investigating an issue I was wondering a german IP was only 1-2 hops away from some RIPE Atlas Probes connected via AS701.
It seems at least probe #50235 and #54508 see any IP directly as next hop, as an example here with the IP of mailop.org:
the 2 probes are in boston, mass vs new york, new york. The endpoint appears to be closer to the boston probe (54508).
From virginia/wdc the endpoint is ~100ms away and in ~germany. (the last hop I see says anx84, which might be norway... 'not boston' though)
Is it possible that 701's seeing a local copy of the /24? looking at their lookingglass for ping/bgp data from billerica, ma (boston adjacent): 91.132.144.0/22 (2 entries, 1 announced) *BGP Preference: 170/-96 Age: 2w2d 6:44:09 Metric: 10 Metric2: 500502 Announcement bits (4): 0-KRT 3-RT 10-BGP_RT_Background 11-Resolve tree 5 AS path: 1299 47147 197540 I (Originator) PING 91.132.147.157 (91.132.147.157): 56 data bytes 64 bytes from 91.132.147.157: icmp_seq=0 ttl=55 time=102.899 ms curious results though :)
https://atlas.ripe.net/measurements/44133927/
Regards Bjoern