[Dnsmasq-discuss] can resolve 1 specific host

[Knud]

Hi Simon

I have opened a support ticket at my ISP (you right..)
Informed them about the strange behavoir of there NS
Let us see what happends

Otherwise they have been very stable...it's a fiberoptic connection 
25/25 Mbit.

Knud

Simon Kelley wrote:
> Knud wrote:
>> Hi Simon
>>
>> Just tested again...same issue again
>>
>> asking my upstream nameserver...
>> camping.dba.dk => unknown
>> www.dba.dk => ok
>> again camping.dba.dk => now ok !
> 
> Yes, I tried again and saw the same thing.
> 
> ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;camping.dba.dk.			IN	A
> 
> ;; ANSWER SECTION:
> camping.dba.dk.		600	IN	CNAME	www.dba.dk.
> 
> ;; Query time: 77 msec
> 
> 
> repeat:
> 
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 4, ADDITIONAL: 4
> 
> ;; QUESTION SECTION:
> ;camping.dba.dk.			IN	A
> 
> ;; ANSWER SECTION:
> camping.dba.dk.		585	IN	CNAME	www.dba.dk.
> www.dba.dk.		1787	IN	A	91.213.17.20
> 
> ;; AUTHORITY SECTION:
> dba.dk.			21587	IN	NS	ns6.netnames.net.
> dba.dk.			21587	IN	NS	ns1.netnames.net.
> dba.dk.			21587	IN	NS	ns5.netnames.net.
> dba.dk.			21587	IN	NS	ns2.netnames.net.
> 
> ;; ADDITIONAL SECTION:
> ns6.netnames.net.	168883	IN	A	199.7.69.253
> ns1.netnames.net.	21747	IN	A	204.74.108.253
> ns5.netnames.net.	168883	IN	A	199.7.68.253
> ns2.netnames.net.	168883	IN	A	62.128.146.40
> 
> ;; Query time: 46 msec
> 
> 
> Looks like once the upstream server has the CNAME cached, it works OK,
> but not before. There are more clues there, as it tells us the
> authoritative nameservers (Ie the ones that hold the configured data)
> are a netnames.net.
> 
> We can ask one of those direct:
> 
> srk at spike$ dig @ns6.netnames.net camping.dba.dk
> 
> ; <<>> DiG 9.5.1-P3 <<>> @ns6.netnames.net camping.dba.dk
> ; (1 server found)
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10510
> ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
> ;; WARNING: recursion requested but not available
> 
> ;; QUESTION SECTION:
> ;camping.dba.dk.			IN	A
> 
> ;; ANSWER SECTION:
> camping.dba.dk.		600	IN	CNAME	www.dba.dk.
> 
> ;; Query time: 22 msec
> ;; SERVER: 199.7.69.253#53(199.7.69.253)
> ;; WHEN: Sun Nov 15 15:20:05 2009
> ;; MSG SIZE  rcvd: 50
> 
> 
> Which probably shows a real problem. That nameserver always gives that
> data without the A record.
> 
> 
> But even more strange, the netnames.net nameservers are not the real
> authoritative ones for dba.dk
> 
> srk at spike:/mnt/onetouch/simon/torrents$ dig ns dba.dk
> 
> ; <<>> DiG 9.5.1-P3 <<>> ns dba.dk
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46594
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2
> 
> ;; QUESTION SECTION:
> ;dba.dk.				IN	NS
> 
> ;; ANSWER SECTION:
> dba.dk.			43888	IN	NS	ns1.danhost.dk.
> dba.dk.			43888	IN	NS	ns0.danhost.dk.
> 
> ;; ADDITIONAL SECTION:
> ns0.danhost.dk.		14276	IN	A	217.195.182.61
> ns1.danhost.dk.		13926	IN	A	195.140.132.26
> 
> ;; Query time: 9 msec
> ;; SERVER: 192.168.0.4#53(192.168.0.4)
> ;; WHEN: Sun Nov 15 15:27:37 2009
> ;; MSG SIZE  rcvd: 100
> 
> so the 89.184.128.193 nameserver you are using is very confused, I
> think. It's using the wrong authoritative nameservers for dba.dk and
> getting the wrong answers, which it is passing on. At this point it's
> probably best to pass the whole mess over to the admins of
> 89.184.128.193 (your ISP?) CC: me on the mail if you wish, in case I can
> provide more information.
> 
>> restart my dnsmasq makes it to known www.dba.dk and camping.dba.dk
>>
>> I am running another dnsmasq server (at a school) with another upstream
>> nameserver...there seems no problems
> 
> I see the same: there's something wrong with 89.184.128.193, for sure.
> 
>> It is another version of dnsmasq included in the FREESCO packged.
>> But it seems not to be a dnsmasq issue but further upstream problem
>>
>> Just strange that this specific host gives problems and not others (to
>> my knowlegde)
> 
> 
> Cheers,
> 
> Simon.
>