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DNS, multiple forwarders, and multiple paths
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Well at the least I'd say OSPF or anycast isn't something we'd do soon, because we're still building out redundancy in our core infrastructure and such, and we're not even at our own planned ideal point with DNS as we'd planned it out a couple of years ago. We do have redundant DNS of course (actually Infoblox).
I guess I was partly in amazement that BIND has an opaque forwarder logic and couldn't quite believe it, and also partly wondering if there were an easy way to improve the situation incrementally for the rare circumstance I mentioned. I still can hardly believe BIND has an internal operating logic that is apparently entirely opaque unless you use a sniffer on the dns server.
But in the less than near future we're always open to using anything that would help us build a more resilient core, internet, and dns infrastructure, and I do want to learn more about what it would take for anycast. But such comprehensive improvements would have to wait until some other things fall into place.