Hi, I figured out a problem with the BIRD routing daemon. It is not possible to route BGP via IPIP tunnels. As you can see below the packets will be routed through the wrong device. Normally it should choose "ASIX" as right device, but it does not. root@cr01:/etc/bird# ip -6 route | grep 2a06:8187:fe48::/48 2a06:8187:fe48::/48 via 2a06:8187:fe01:100::2 dev vlan1000 proto bird src 2a06:8187:fe01::2 metric 1024 pref medium The interface configuration is the following: iface ASIX inet manual pre-up ip -6 tunnel add ASIX mode any local 2a07:59c6:d007::1 remote 2a00:1ca8:2a::730 ttl 255 pre-up ip link set dev ASIX mtu 1476 pre-up ip link set dev ASIX up pre-up ip address add 89.46.125.149/30 dev ASIX pre-up ip address add 2a06:8187:fe01:100::1/56 dev ASIX post-down ip -6 tunnel del ASIX root@cr01:/etc/bird# birdc6 -v 0001 BIRD 1.6.3 ready. bird> Maybe you can help me here? Kind regards. Joey