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.ly Mess: The Wages of Obsessive Secrecy
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So, as I read it, the core of your concern is that DNS-over-TCP doesn't work with anycast servers.
Actually DNS-over-TCP does work with anycast servers except when there is a routing change in the middle of the TCP connection.
As a practical matter that is rather rare and easily cured by a software retry.
As for your DNS appliance - an alternative is to simply set up a local resolver on a box that runs for a long time (e.g. a typical Linux/Bsd platform) and let it build-up a cache.
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Re:Where is the coverage of the broken Root Server
by KarlAuerbach
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What about the case where there are 3 or 4 physical servers at the same site (from a routing point of view), with the same IPv4 address ?
The routing between your location and that other site can remain the same, but your TCP DNS session can end up thrashing between the various servers. The links at each end can fill with errors and retries as the two ends try to resynch in some random manner.
How rare this is, or the impact on the sites is not the point. The point is that root-server operators went forward with no discussion and just made up their own rules as they pleased. They of course profit from selling instances of those root-servers.
While the root-server operators were playing games, the ICANN Board and Staff were singing the praises of their security and stability track-record. This is one of many items in the large box of hypocrisies that ICANN hides in the closet.
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