On Mar 10, 2022 an incident occurred in the Frankfurt data center involving a subset of Block Storage volumes which prevented the volumes from mounting and stopped some Linodes with Block Storage volumes attached from booting. The root cause of this was an incorrect networking configuration on a host. During routine maintenance on that host, a reboot caused the incorrect configuration to be implemented which prevented access to a subset of Block Storage volumes. The issue was identified at ~12:15PM EST, and then confirmed resolved at ~12:50PM EST. We have taken steps to ensure more rigorous testing to prevent issues like this in the future. We are also implementing more in-depth monitoring to identify possible network configuration errors before they impact any services in the future.