I'm currently trying to get a second tunnel and subnet flying. My first tunnel (endpoint deham01, heartbeat, aiccu under Opensuse) and subnet work flawlessy on my DSL at home since 2009. Tunnel #2 to deham02 (also heartbeat) on a different DSL comes up ok but doesn't carry traffic. v4 connectivity is there. While ping6ing the remote endpoint ICMP requests go out but nothing comes back. aiccu test and wireshark confirm this. Tried this with a v6-capable DSL router (Fritz!Box 3370) and aiccu under Ubuntu 10.10 (behind NAT as well as directly on DSL). Interestingly both machines work correctly with tunnel #1 to deham01. Both PoPs are up according to the status page. Has anyone of you experienced a similar problem and eventually solved it?