Our Dallas Path.net network started seeing disruption at 13:56 UTC, ending at 14:12 UTC. The issue was caused by Path.net suffering issues and still announcing our IP subnets. This meant any IPs with symmetric filters enabled would have found these ports became inaccessible for the duration of the issue. Path.net came back fully online at 14:12 UTC therefore restoring our full network functionality. We're talking to Path.net about how to avoid this specific scenario occurring in the future.