We had an IPv4 network outage starting around 2021-03-09 21:15:00 UTC and lasting until 2021-03-10 00:45:00 UTC.
The outage was due to a bug in our router which caused flapping BGP sessions affecting both our primary and secondary transit. The mitigation we put in place, coordinated with HE, took an unusually long time to debug. HE understood what was happening and how to fix it, the delay was us.
All customers have been issued credit for the downtime.