[Dnsmasq-discuss] AAAA Records delivery?

[Nicholas Weaver]

An A query for an AAAA only name should return a 0 answer NOERROR (so
"there is an answer, but no value")

nweaver% dig ipv6.l.google.com

; <<>> DiG 9.6.0-APPLE-P2 <<>> ipv6.l.google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 59724
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;ipv6.l.google.com.             IN      A

;; Query time: 4 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Mon Apr 25 05:10:54 2011
;; MSG SIZE  rcvd: 35

> version.bind.           0       CH      TXT     "dnsmasq-2.51"


AAAA records are queried for SEPARATELY, as a separate rtype.  If a
computer wants both records, it needs to query for them both.


If you are indeed getting NXDOMAIN and not 0-answer NOERROR I suspect
its not DNSMASQ but the upstream resolver.




On Mon, Apr 25, 2011 at 3:17 AM, Modem Man <modem-man at gmx.net> wrote:
> Hi,
>
> didn't found anything at the Kellys Web Site, so I hope you have the
> same issue...
>
> - My hardware is a Linksys NSLU2
> - My OS is Linux "OpenSLUG 5.3/LE" + optware + dnsmasq (2.47-r0 via opkg)
> - So I have *no* IPv6 stack on the NSLU2
> - my (Windows XP as well as Debian Squeeze) PCs are querying a DNS name
> which only has IPv6 "AAAA" record (I know, it only has a IPv6 record, it
> is: "v6.testmyipv6.com" )
>
> => Problem: dnsmasq answers with NX record
>
> Is this intentional? The AAAA content of DNS record is - for my
> understanding - also included in IPv4 based queries. So I expect the
> NSLU2/dnsmasq will ask the ISP's DNS server, get an answer and deliver
> it to my PC, regardless of "A" or "AAAA" content. The PC then can decide
> if using AAAA or A record. So, there is no need to have IPv6 kernel
> module in NSLU2, or am I wrong?
> Or is my dnsmasq 2.47-r0 from optware feed somehow stripped down to only
> IPv4? Where can I see this?
>
> unsure,
> Modem Man
>
>
>
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