[Dnsmasq-discuss] dnsmasq nameserver order

[Simon Kelley]

kareemy wrote:
> I'm using dnsmasq provided with Tomato. My goal is to use my ISP
> supplied DNS servers but also have a backup dns server such as
> 8.8.8.8. Within Tomato, I set 8.8.8.8 as a static DNS. My
> /etc/resolv.dnsmasq is as follows:
> 
> nameserver 8.8.8.8
> nameserver 192.168.15.1
> 
> 192.168.15.1 is my ISP dns (its actually my Clear WiMax modem which
> then goes to my ISPs real dns). So I want to know which server dnsmasq
> will favor. I understand if strict-order is set then dnsmasq will
> always prefer the first nameserver (in this case 8.8.8.8). I do not
> have strict-order set. The man-page states "By default, dnsmasq will
> send queries to any of the upstream servers it knows about and tries
> to favour servers that are known to be up."
> 
> In my case, both servers are up and I assume dnsmasq knows about both
> of them. I would like it to prefer 192.168.15.1. How does it pick
> which server to use when all of them are up?

Every so often, it sends a query to all of them, and looks to see which
one answers first. For all practical purposes, which server is used for
a particular query is indeterminate.



Cheers,

Simon.

> 
> Thanks,
> Kareem
> 
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