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

John Siu john.sd.siu at gmail.com
Tue Dec 10 05:47:32 GMT 2019


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

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.>
>
>
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