This went for really long. One of bad days in the West w.r.t internet outages.For now from their replies to their customers as reported on NANOG mailing list - issue was because of flowspec rule.More discussion on twitter about it: https://twitter.com/atoonk/status/1300124696839516160On Sun, Aug 30, 2020 at 6:13 PM Anurag Bhatia <firstname.lastname@example.org> wrote:Hello everyone,From the last couple of hours there is a high noise ongoing on the outage mailing list (which is a bit focused on outages within the US) about Century Link / Level3 AS3356 outage.As of now people are reporting of outage + fact that stale routes are still visible. Level3 is one of the upstreams of many Indian networks like Airtel AS9498, Jio AS64049, Sify AS9583 etc. Besides a lot of downstreams behind AS3356.Details about the outage are not very clear so far but likely limited to US and Europe. Expect issues in connectivity with content and eyeballs in those regions.https://status.ctl.io/
Thanks.---------- Forwarded message ---------
From: Lukas Tribus via Outages <email@example.com>
Date: Sun, Aug 30, 2020 at 6:03 PM
Subject: [outages] 3356 does not WITHDRAW bgp routes
As previously mentioned by Stephen Flynn, 3356 does not WITHDRAW stale
bgp routes, can be confirmed with AT&T's route server at (telnet
Stale routes from 1 hour + are still announced by 3356.
This is causing blackholing.
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