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The logarithmic Increase in roundtrip times starting Mar 30, 2022 and continuing through Apr 1, 2022 corresponds to the fall of most of Mariupol to Russian forces (see https://en.wikipedia.org/wiki/Siege_of_Mariupol). The last ping response pinger was able to get from ewn.mdu.in.ua was from just before midnight May 20, 2022. This corresponds to the fall of Mariupol (https://en.wikipedia.org/wiki/Siege_of_Mariupol) to Russian forces.
www.znu.edu.ua3 (Zaporizhia National University, Zaporizhia, latitude longitude 47.189 35.1811)
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