Hallo, yesterday at arund 18:00 UTC I noticed some strange IPv6 traffic waves on my pool server in Germany.
About every 10 Minutes (more or less) the request packet rates gone up by 3-4 times of the normal average packet rates. More than 99% of the requests were originating from the IPv6 space of one particular ISP in Germany. Not always the same one, but inside that "wave" all request IPs were belonging to one ISP. For example: - The first wave I noticed originated at the Deutsche Telekom (DTAG) network (2003::/23) - The second originated ad Unitymedia (2a02:908::/32) - The third wave originated at KabelBW (2a02:8070::/32) The Wireshark statistics graph attached might make it more clear (times shown are in UTC+2). The green line is IPv4 traffic, the red bars show IPv6 traffic. There were also some traffic waves before, some of them with over 1.000 Packets per second - which are kind of unusual for my server, but not a problem ;-) Did something happen with the pool servers? Or has anything changed in the DNS? Greetings from Wuppertal, DE Max
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