[Dnsmasq-discuss] Problems with SRV Queries

[Simon Kelley]

Edson wrote:
>  
> 
>  
> 
>> -----Original Message-----
> 
>> From: Simon Kelley [mailto:simon at thekelleys.org.uk]
> 
>> Sent: quinta-feira, 1 de março de 2007 11:21
> 
>> To: Edson
> 
>> Cc: dnsmasq-discuss at lists.thekelleys.org.uk
> 
>> Subject: Re: [Dnsmasq-discuss] Problems with SRV Queries
> 
> 
>> Edson wrote:
> 
>>> Hi, All...
> 
> 
>>> I'm facing some really wierd situation here...
> 
>>> I have a Grandstream that depends on a SRV querie to resolve the SIP
> 
>> server
> 
>>> address. When I define a SRV clause in the DNSMasq config file, and
> 
>>> configure the Grandstream to use it as DNS server, it works smoothly,
> 
>> the
> 
>>> registration is successful. But if I don't, I see the querie being
> 
>> forwarded
> 
>>> to the DNS upstream server, but the answer never hits the Grandestream.
> 
> 
>> Small gotcha here: if you are relying on --log-queries for this data,
> 
>> then you won't see the reply logged, only replies to A and AAAA queries
> 
>> get logged.
> 
>  
> 
> I'm getting such logs:
> 
> Mar  1 12:53:27 repolho dnsmasq[25013]: query[SRV] _sip._udp.alta.com.br
> from 192.168.100.26
> 
> Mar  1 12:53:27 repolho dnsmasq[25013]: config _sip._udp.alta.com.br is
> <NODATA>
clue                                        ^^^

This says that the source of the reply is dnsmasq configuration, not a
reply from an upstream server.


You can see, the querie is present on the INTERNAL, but not on the
> EXTERNAL.
> 
>  
That's expected, given the log.

> 
> For simplicity I reduce the DNSmasq configuration to:
> 
> filterwin2k

and here's the culprit: from dnsmasq(8), "--filterwin2k .... The
requests  blocked  are  for records of types SOA and SRV"

Remove that, and it will all work. Apologies, I should have included
--filterwin2k in my list of options which could intercept queries.


Cheers,

Simon.