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I admire the work of Paul Vixie over the years, been using postfix and bind since 2000. However, I'm a fan of geodns concept in general, and we have ECS standard as well to help with better answers. This allows small players or individuals to do what Big companies do, but without running anycast network, which is very expensive at every step of the journey: from getting ASN, then PI address space, paying yearly fees, then getting bgp peering and operating it efficiently. Thousands of $ per month and a required expertise. Instead of just spinning up 5 cheap vps and put a smart DNS in front, accepting all the tradeoffs, for $50 per month. I do agree however, that some of the operational cost (marginal) is shifted to other parties because of small TTL need for this to work sensibly. But still, majority of traffic goes to my authoritative DNS servers that I operate, as the higher zones have a big TTL anyway. You can't geodns a glue record, it is static and it is cached properly. So who bear this cost? End user pays for the bandwidth so an extra packets for lookup is not an issue. ISP resolvers? A bit yes, but they can enforce a policy on minimal TTL if this is too expensive for the ISP... Clearly it is not. At the end of the day, customer (ISP customer) will pay the bill if ISP needs to spin up more resolvers. |