[solotronics]

I don't see how you can hide destination IP. Each router has to know the destination IP to determine where to send the packet, yes there are some cases such as MPLS/VXLAN/v4VPN where the packet is encapsulated inside more routing info but for it to get to its destination the routers have to have an IP.

[keepmesmall]

If the routers have public keys it's possible, then the client has to determine (some or all points on) the route. I think future protocols will track use and payment via client-provided keys which are somehow linked to their ISP.