Hello, I have problems with the setup of my IPv6 tunnel on my android (AYIYA configuration) concerning routing packets through the tunnel to a remote IPv6 host. I successfully have requested a tunnel and configured in the androiccu app. After starting the app I can see in my tunnel information page that my android phone successfully can be pinged and the tunnel exists. Also I can see (with network info II app) that there is a network interface using the IP of the tunnel. The same setup I installed on my Raspberry Pi (behind a NAT) with the linux version of aiccu and another tunnel. Additionally I use radvd with the given subnet for that tunnel. So a route is added for the subnet. Everything works fine with my RaPi. But on my phone I don't understand how to add an additional IP and route for the subnet of the tunnel and not with the IP of the tunnel. So it is clear that I cannot ping6 any remote host from my android. How to setup something like radvd on android? Is it necessary even if I dont want to do a router advertisment on my phone? What did I understand wrong? Thanks in advance, Best regards Michael