Anyone have any experience with dns and ipv6? I did a lookup on a host and it came back with only an ipv6 record. Also shows up in ident as a valid name. I was curious how an ipv6 only device would be able to hit my server. Details and more info off list, tonight if possible. -- steve
Hi Steve, An IPv6 only device can "hit" your server if all the DNS hierachy resolves through IPv6. It works the same way as in IPv4. Rui 2009/6/21 Steve Pirk <orion@pirk.com>:
Anyone have any experience with dns and ipv6? I did a lookup on a host and it came back with only an ipv6 record. Also shows up in ident as a valid name. I was curious how an ipv6 only device would be able to hit my server.
Details and more info off list, tonight if possible.
-- steve
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
Joe Abley wrote:
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.
At least for now, it's pretty well accepted that basic servers like DNS, SMTP, IMAP, HTTP proxies, etc. MUST be dual-stacked for the duration of the transition. Even if your clients are IPv6-only, they can still resolve hostnames, send mail, surf the web, etc. to sites that are IPv4-only via those few servers. Generic, scalable solutions would be better rather than protocol-specific proxies of course, and the IETF is working on that angle, but in the meantime it'll allow the most common client-server protocols to keep working and get some experience with IPv6. Also, keep in mind that the vast majority of folks out there still can't get native IPv6 transit from their upstreams and may not be willing to trust free tunnel brokers with production traffic to their servers. Even if they can, most eyeballs trying to hit them are still IPv4-only and the few IPv6 eyeballs can be assumed to have proxies since otherwise they couldn't see 99.9999% of the Internet. This is what it looks like before critical mass is achieved. S -- Stephen Sprunk "God does not play dice." --Albert Einstein CCIE #3723 "God is an inveterate gambler, and He throws the K5SSS dice at every possible opportunity." --Stephen Hawking
I would suggest to read RFC3901/BCP91: ³DNS IPv6 Transport Operational Guidelines² on this topic. - Alain. On 6/21/09 5:45 PM, "joel jaeggli" <joelja@bogus.com> wrote:
In pratice, most clients are not their own recursive resolvers.
Rui Ribeiro <racribeiro@gmail.com> wrote:
Hi Steve,
An IPv6 only device can "hit" your server if all the DNS hierachy resolves through IPv6. It works the same way as in IPv4.
Rui
2009/6/21 Steve Pirk <orion@pirk.com>:
Anyone have any experience with dns and ipv6? I did a lookup on a host and it came back with only an ipv6 record. Also shows up in ident as a valid name. I was curious how an ipv6 only device would be able to hit my server.
Details and more info off list, tonight if possible.
-- steve
participants (5)
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Durand, Alain -
Joe Abley -
Rui Ribeiro -
Stephen Sprunk -
Steve Pirk