Floris Bruynooghe <floris.bruynooghe@gmail.com> wrote: > Yes, I double checked the routes. I checked the neighbour discovery > with wireshark, it just didn't respond. Once the router was in the > host's neighbour cache (showed up in "ip -6 neigh show because of a > ping or something else from the router to the host) communication did > work fine. Try setting the allmulticast flag. ip link set eth0 allmulticast on Regards, Bernhard