[Unbound-users] Parent Child Disagreement Redux
dmarquess at gmail.com
Tue Jul 20 21:12:00 UTC 2010
On Tue, Jul 20, 2010 at 4:01 PM, Robert Edmonds <edmonds at debian.org> wrote:
> Dustin Marquess wrote:
>> What's missing is the A records :).
>> $ host www.us.hsbc.com. 127.0.0.1
>> ;; connection timed out; no servers could be reached
> no, the nameservers respond fine to qtype=A, unless you are suggesting
> they intermittently fail?
> www.us.hsbc.com. 600 IN NS phprdgss01.hsbc.com.
> www.us.hsbc.com. 600 IN NS vhprdgss01.hsbc.com.
> ;; Received 83 bytes from 18.104.22.168#53(auth61.ns.uu.net) in 67 ms
> $ dig +short +norec @vhprdgss01.hsbc.com. a www.us.hsbc.com
> $ dig +short +norec @phprdgss01.hsbc.com. a www.us.hsbc.com
Yes, the NS servers for the domain return the A records. However a
client querying against the unbound cache never receives them:
$ dig @127.0.0.1 in a www.us.hsbc.com.
; <<>> DiG 9.6.2-P2 <<>> @127.0.0.1 in a www.us.hsbc.com.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 26467
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.us.hsbc.com. IN A
;; Query time: 3566 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Jul 20 16:09:33 2010
;; MSG SIZE rcvd: 33
> fwiw unbound 1.4.5 resolves www.us.hsbc.com/A for me, and i've never
> noticed a problem looking up that domain.
us.hsbc.com works fine in unbound, www.us.hsbc.com does not.
Both work fine using dnscache or MaraDNS as the recursive DNS server.
Using Unbound under both FreeBSD & NetBSD, however, causes the above
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