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. _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
