I'm not seeing return-path mtrs/traceroutes provided. You guys, thusly, are only providing half the picture. Initial post shows possible loss between Chicago and Newark, follow-up shows possible loss between Newark and New York. But we need to see the return path. You may want to try https://lg.twelve99.net/ (Arelion looking glass) if you do not have access to the destination. Where I got that from: https://www.peeringdb.com/net/10 Reading material in the meantime: https://www.nanog.org/meetings/nanog47/presentations/Sunday/RAS_Traceroute_N... -- | Jeremy Chadwick jdc@koitsu.org | | UNIX Systems Administrator PGP 0x2A389531 | | Making life hard for others since 1977. | On Thu, Jul 02, 2026 at 06:46:20PM +0900, Phineas Walton via Outages wrote:
a few others + us (AS400940) have been seeing the same since 06:04 UTC for many arelion paths - their noc is not acknowledging the incident over email comms. very frustrating
My traceroute [v0.95] production-hikari-dpjfk-1 (152.233.47.66) -> 162.220.232.255 (162.22026-07-02T06:13:31+0000 Keys: Help Display mode Restart statistics Order of fields quit Packets Pings Host Loss% Snt Last Avg Best Wrst StDev 1. unn-152-233-47-76.datapacket.com 38.9% 285 0.1 0.1 0.1 0.3 0.0 2. vl223.nyc-drt12-core-1.cdn77.com 0.0% 285 0.9 0.9 0.8 1.5 0.1 3. ewr-b6-link.ip.twelve99.net 0.0% 285 3.4 3.8 2.1 12.2 1.0 4. nyk-bb5-link.ip.twelve99.net 62.1% 285 1.5 1.6 1.5 4.1 0.3 5. rest-bb1-link.ip.twelve99.net 87.0% 285 8.2 8.3 8.1 11.1 0.5 6. atl-bb1-link.ip.twelve99.net 64.1% 284 23.8 23.9 23.8 25.5 0.2 7. atl-b24-link.ip.twelve99.net 96.5% 284 24.0 24.1 23.9 24.3 0.1 8. atl-bb2-link.ip.twelve99.net 57.0% 284 24.0 23.9 23.9 24.3 0.1 9. hou-bb4-link.ip.twelve99.net 84.5% 284 41.7 42.6 41.0 44.8 0.8 10. dls-b23-link.ip.twelve99.net 59.5% 284 52.2 52.2 52.0 59.0 0.6 11. lax-bb2-link.ip.twelve99.net 89.8% 284 99.8 99.2 98.1 99.9 0.4 12. palo-bb4-link.ip.twelve99.net 18.4% 284 116.5 120.3 111.8 135.3 3.8 13. sjo-b23-link.ip.twelve99.net 89.8% 284 125.5 122.6 116.7 127.3 3.7 14. railwaycorp-ic-390075.ip.twelve99-cust.net 9.2% 284 118.7 117.5 111.6 123.9 3.6 15. 162.220.232.255 5.7% 284 117.6 117.6 116.3 123.3 0.8
On Thu, Jul 2, 2026 at 6:43 PM Phil Lavin via Outages <outages@outages.org> wrote:
Hi folks,
Seeing major packet loss on 1299. Somewhere between Seattle and Chicago. mtr below between AWS usw2 and Hetzner Germany.
My traceroute [v0.95] ** (**) -> hc-ping.com (176.9.71.146) 2026-07-02T09:06:23+0000 Keys: Help Display mode Restart statistics Order of fields quit Packets Pings Host Loss% Snt Last Avg Best Wrst StDev 1. ip-**.us-west-2.compute.internal 0.0% 81 0.2 0.2 0.2 0.3 0.0 2. 242.11.42.7 0.0% 81 8.2 9.4 8.0 20.0 2.6 242.11.42.5 242.11.43.5 242.11.43.135 242.11.42.129 242.11.43.3 242.11.42.131 242.11.42.3 3. amazon-ic-341989.ip.twelve99-cust.net 0.0% 81 7.6 7.6 7.5 7.9 0.1 4. sea-b1-link.ip.twelve99.net 0.0% 80 9.4 9.1 8.3 14.5 1.1 5. chi-bb2-link.ip.twelve99.net 67.1% 80 175.5 174.2 171.2 176.8 1.8 6. ewr-bb2-link.ip.twelve99.net 56.2% 80 112.3 112.3 110.2 113.4 0.7 7. ldn-bb2-link.ip.twelve99.net 54.4% 80 205.7 205.6 204.7 207.3 0.6 8. hbg-bb2-link.ip.twelve99.net 60.8% 80 204.2 204.0 202.6 205.5 0.7 9. hbg-b2-link.ip.twelve99.net 62.0% 80 191.9 192.6 190.4 203.8 2.7 10. hetzner-ic-383976.ip.twelve99-cust.net 55.7% 80 201.4 201.3 198.8 203.0 0.8 11. core21.fsn1.hetzner.com 38.8% 80 201.1 200.8 199.6 202.0 0.6 12. ex9k2.dc6.fsn1.hetzner.com 55.7% 80 201.4 201.4 199.7 206.8 1.1 13. static.146.71.9.176.clients.your-server.de 41.2% 80 201.7 201.3 199.2 202.6 0.7
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