On Thu, Mar 26, 2015 at 9:31 PM, Roman Mamedov <rm@romanrm.net> wrote:
NAT66 is not (and should not be) common, however there is no harm in doing an
inobtrusive check to see if it's deployed, or to collect stats on the scale of
such deployments.
I am part of a team deploying IPv6 in S E Asia, for enterprises in their offices. As we do not have clarity on who the ISP will be, and this will change frequently till v6 availability stabilises, use of ULA is common. A NAT66 device is used much a normal IPv4 NAT gateway; the NAT66 means that if the upstream IPv6 prefix address changes, all the PCs do ot end up with new addresses.