Bas, I understand this topic is already fairly long, but I would still suggest reading it from the beginning. He gets 250-300 Mbps of NTP traffic with the lowest 512 kbps setting. This is a problem for all of Russia at the moment. Many Russian servers are currently struggling under the extra load. Providing even some rate-limited service is better than entirely dropping the traffic, because it may ease the burden from some of the other Russian NTP servers in the pool.
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