[Dnsmasq-discuss] "--all-servers" always on?

Siji Sunny siji.sunny at sugarboxnetworks.com
Tue Dec 10 06:03:05 GMT 2019


> It should be off, base on manpage. And I don't know how to set a "off" to
> it.
>

Adding "default" inside the config file, may help you. With reference to
man page, default option will send queries to just one server.


> On Tue, Dec 10, 2019 at 12:45 AM Siji Sunny <
> siji.sunny at sugarboxnetworks.com> wrote:
>
>>
>> Base on my understanding of the manpage, "all-servers" means dnsmasq will
>>> send query to all servers at once and use the 1st response.
>>>
>>> I am seeing all my queries, if not already in cache, are sent to all
>>> servers configured. But I don't have "all-servers" set. I want to turn off
>>> this behavior.
>>>
>>
>> Interesting, we used to enable it by adding the entry all-servers @
>> dnsmasq.conf file. And by default its turned-off.
>>
>>
>>>
>>> On Tue, Dec 10, 2019 at 12:29 AM Siji Sunny <
>>> siji.sunny at sugarboxnetworks.com> wrote:
>>>
>>>>
>>>> OS: Ubuntu 18.04 with all updates
>>>>> dnsmasq version: 2.79-1
>>>>>
>>>>> According to man page:
>>>>>
>>>>> --all-servers
>>>>>     By default, when dnsmasq has more than one upstream server
>>>>> available, it will send queries to just one server. Setting this flag
>>>>> forces dnsmasq to send all queries to all available servers. The reply
>>>>>  from  the  server  which  answers first will be returned to the original
>>>>> requester.
>>>>>
>>>>> I don't have that flag in command line or in the config file. However
>>>>> with "log-queries=extra" in config file, I am seeing following:
>>>>>
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 query[A]
>>>>> news.com from 10.10.10.101
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 2001:1998:f00:2::1
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 2001:1998:f00:1::1
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 2606:4700:4700::1001
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 2606:4700:4700::1111
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 2001:4860:4860::8844
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 2001:4860:4860::8888
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 209.18.47.63
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 209.18.47.62
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 209.18.47.61
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 1.0.0.1
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 1.1.1.1
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 8.8.4.4
>>>>> Dec 09 11:29:24 door dnsmasq[9403]: 3640 10.10.10.101/49351 forwarded
>>>>> news.com to 8.8.8.8
>>>>> Dec 09 11:29:25 door dnsmasq[9403]: 3640 10.10.10.101/49351 reply
>>>>> news.com is 35.190.79.82
>>>>>
>>>>> Is --all-servers behavior changed to default on? Is there a way to
>>>>> revert it?
>>>>>
>>>>
>>>> Dear John,
>>>> If I understood correctly, option all-servers will enable dnsmasq to
>>>> send the resolve query to the secondary dns server defined, if its failed
>>>> to resolve from the first one.
>>>>
>>>>
>>>>>
>>>>> Thank you!
>>>>>
>>>>> John Siu
>>>>> _______________________________________________
>>>>> Dnsmasq-discuss mailing list
>>>>> Dnsmasq-discuss at lists.thekelleys.org.uk
>>>>> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
>>>>>
>>>>
>>>>
>>>> --
>>>> Siji
>>>>
>>>> <https://www.facebook.com/SugarBoxNetworks/>  |
>>>> <https://www.instagram.com/sugarboxnetworks/> |
>>>> <https://in.linkedin.com/company/margo-networks-pvt.-ltd.>
>>>>
>>>>
>>
>> --
>> Siji
>>
>> <https://www.facebook.com/SugarBoxNetworks/>  |
>> <https://www.instagram.com/sugarboxnetworks/> |
>> <https://in.linkedin.com/company/margo-networks-pvt.-ltd.>
>>
>>

-- 
Siji

-- 
 <https://www.facebook.com/SugarBoxNetworks/>  |  
<https://www.instagram.com/sugarboxnetworks/> |  
<https://in.linkedin.com/company/margo-networks-pvt.-ltd.>



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