On 12/11/2014 10:15 PM, Mark Andrews wrote: >> yawn. Much of the end-user equipment still does not support v6. > When was the last time you could actually buy a tablet, laptop, > desktop, cell phone that didn't support IPv6? You can get printers > that support IPv6. You can get This confuses 'devices' with 'end to end communications'. And end-to-end communication is limited to the least-capability component in the sequence. (And to the extent that operators choose to provide /different/ services over IPv4 than IPv6, the switching cost tends to be made higher.) It also appears to ignore use of all existing devices that do /not/ support IPv6, most of which won't convert to it. Lest the response be something like "they already work so they aren't a problem" please see above. d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net