Hi, since 07:48:58, as reported in my statistics, I don't receive any ping from the POP's endpoint (2001:1418:100:1cf::1) but it replies to mine and I still have IPv6 connectivity. I have captured 1 hour of traffic through the tunnel interface and there is no sign of ICMPv6 echo requests from it. I can ping my endpoint from outside, hearthbeat is OK, no clock sync problems, I can reach any IPv6 destination but the graph about my tunnel looks like it's down, even if it's actually working. Thanks.