This is the blog of Ronald Bartels that wanders on and off the subject of problem management (that is how it started). Like the best music is from the Eighties and a wee dram helps in solving most inconveniences.
Fat Fingers Strike Again…
According to messages circulating on mailing lists
it was all caused by a fumbled configuration attempt. My wild guess:
someone deleting the wrong route map, causing routes that should have
been tagged with no-export escape into the wider Internet.