> The only standard solution so far is to treat these networks as NBMA, > i.e. on the router for ND. This is not satisfactory, because it places a > lot of burden on the router and also because it leaves out ad hoc > networks.
There is a middle ground since ND can be configured to have the routers not advertise any on-link prefixes (while still advertising prefixes for stateless addrconf or not; that's orthogonal). In this mode the hosts would send all packets to a default router and the router has the option to redirect the host to the on-link link-layer address. Thus the only nodes multicasting NS messages would be the routers. I don't know how much this would improve the situation, and whether it would also be benefitial if the routers broadcast the NS messages. Erik -------------------------------------------------------------------- IETF IPv6 working group mailing list [EMAIL PROTECTED] Administrative Requests: https://www1.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
