On 21-Jun-2009, at 10:36, Rui Ribeiro wrote:
An IPv6 only device can "hit" your server if all the DNS hierachy resolves through IPv6. It works the same way as in IPv4.
"Resolves through IPv6" implies a mixture of IPv6 transport and RRSet availability. To add some more details, you need: - AAAA records in your hints file, so you can complete a useful priming query - AAAA glue in the zones being followed to answer your questions, from the root down - all NS sets above every zone cut to include at least one reachable nameserver that can be queried using IPv6 transport - the resources you're ultimately looking for to have AAAA records (assuming your goal is to find an address) Some time ago I checked the ORG and INFO registries and discovered that the number of host objects there with IPv6 address attributes was very small. I presumed at the time that it was either hard to find a registrar that would support IPv6 addresses for hosts, or that people were just not paying much attention to v6-only resolution. Joe