On Apr 11, 2018, at 4:26 PM, Mark Boolootian <boo...@ucsc.edu> wrote:
>>> As far as I know, a host with on an IPv6 address is only ever
>>> going to perform AAAA lookups. I'd be very interested to know
>>> if there are cases where that isn't true.
>>
>> Well, if you run nslookup or dig -t a, you're asking for A records
>> explicitly.
>
> Ah, true that. Does nslookup do that by default?
Yes, nslookup has A as the default type. Here is nslookup handling a AAAA
query:
% nslookup -type=aaaa ipv4.l.google.com
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
*** Can't find ipv4.l.google.com: No answer
Authoritative answers can be found from:
l.google.com
origin = ns1.google.com
mail addr = dns-admin.google.com
serial = 192521433
refresh = 900
retry = 900
expire = 1800
minimum = 60
(If DNS64 was in place, I ought to see 74.125.24.x mapped to an IPv6 address
instead-- something like 64:ff9b::74.125.24.x.)
Regards,
--
-Chuck
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