On Mon, Jun 16, 2003 at 21:39:03 -0400, Keith Moore wrote: > There isn't going to be a great transition to IPv6 in the sense that > you seem to mean. IPv4 and IPv6 will coexist for a long time. Yes, but I am afraid that underestimates the overhead of running dual stack. o address administration (dns, number plans, firewall rules, etc) has to be done twice o network management systems have to monitor both protocols o when there is a problem, you first have to figure out if it is v4 or v6 related o new services (software/hardware) have to be setup and tested for both protocols ... To be clear, I do think dual stack is the best strategy for the present early stage of _transition_. rvdp