Rob wrote: > Steve Kostecke <[email protected]> wrote: >> On 2009-03-05, Martin Burnicki <[email protected]> wrote: >> >>> The IPv4 address is used only after the IPv6 address has timed out, even >>> though (as far as I understand it) the DNS server first returns an IPv4 >>> address, then an IPv6 address: >>> >>> # host support.ntp.org >>> support.ntp.org has address 204.152.184.138 >>> support.ntp.org has IPv6 address 2001:4f8:0:2::23 >> >> On my LAN I see: >> >> $ host support.ntp.org >> support.ntp.org A 204.152.184.138 >> >> To resolve the IPv6 address: >> >> $ aaaa support.ntp.org >> support.ntp.org AAAA 2001:4F8:0:2:0:0:0:23 >> >> Both 'host' and 'aaaa' are a part of the Debian host package. The >> version I have installed is: >> >>||/ Name Version Description >> +++-============-=============-============================================ >> ii host 20000331-9 utility for querying DNS servers >> >> If it matters I run a local name-server and do have a 6-to-4 tunnel. > > That does not matter. The protocol you use to query the nameservers > (IPv4 or IPv6) has no influence whatsoever on the results returned from > the queries. Those results are only influenced by the queries being > made and the entries in the zone. > > So, your "host" program asks only for A records. Mine asks both A and > AAAA. (and MX as well) > Your "aaaa" program (which I don't have) asks for AAAA records. > > This is all not very relevant for the result in the webbrowser. > It depends on what queries the webbrowser makes, and what it does with > the results.
That's also what I understand how it works. Martin -- Martin Burnicki Meinberg Funkuhren Bad Pyrmont Germany _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
