Routes and routing tables

Sometimes more-specifics are needed to compete against more-specifics being
incorrectly advertised by other people. Sometimes folks _insist_ on cutouts,
and you have to go route-to-route against them if you want to keep your block
intact. I hate this, it's bad business, I don't do it myself, I don't let my
customers do it, but I've seen it often enough to have it be worth mentioning.