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As part of the planned reboot on homeserver greenblatt to upgrade memory and upgrade the kernel I also disabled the last remains of my endpoint of the old IPv6 tunnel, which was my way of getting IPv6 at home from 27 September 2001 until 13 August 2010. I haven't disabled the tunnel at xs4all yet, so there is still some of that icmp6 ping traffic showing up:tcpdump -pni ppp0 proto 41 13:54:43.835071 IP xxx.xxx.xxx.xxx > mm.nn.oo.pp: IP6 2001:418:2007::c611:f352 > 2001:888:1011::694: ICMP6, echo request, seq 25869, length 64 13:54:46.401613 IP xxx.xxx.xxx.xxx > mm.nn.oo.pp: IP6 2001:559:0:300::6011:9026 > 2001:888:1011::694: ICMP6, echo request, seq 31125, length 64Let's see what happens now I don't respond anymore.