Hello.
Has anyone set up tunnels using only IPv6 + route + mangle for v6 addresses? So that addresses from the v6 address list are routed through the v6 tunnel (or manually defined subnets / BGP to a different gateway)? Not 6to4, but specifically IPIP6 / GRE6? It seems like the tunnel is up, but I don’t understand how to route traffic through it... I tried assigning ULA addresses to the tunnel interface on both sides—pings work, but if I manually route a specific path, it doesn’t work.
I have /56 (64), /47 (64), /64 prefixes, and single v6 addresses (ISP + various VPS).