Author here. The weaknesses are known (see for example http://www.netdevconf.org/1.1/proceedings/slides/kubecek-ipv6-route-lookup-performance-scaling.pdf http:/

Author here. The weaknesses are known (see for example http://www.netdevconf.org/1.1/proceedings/slides/kubecek-ipv6-route-lookup-performance-scaling.pdf http://www.netdevconf.org/1.1/proceedings/slides/kubecek-ipv...). IPv6 doesn't have the same features as IPv4 (notably, IPv6 can do a route lookup using both source and destination addresses). Therefore, it's not just a matter of reusing what is done with IPv4.