[Dnsmasq-discuss] Authoritative and regular DNS on same interface

[Simon Kelley]

On 10/05/13 00:01, Toke Høiland-Jørgensen wrote:
> Hi
>
> I'm setting up a network with a bit of an odd topology, in that it has
> IPv6 connectivity supplied through a wireless link that is attached to
> the network behind the main gateway (the latter of which is running
> dnsmasq). I.e. a setup something like this:
>
> Router ------- LAN
>            |
>            |
>        v6 gateway
>
> I would like to use the authoritative dns support in dnsmasq for
> resolving clients on the LAN (which get their addresses from DHCP and RA
>  From the router). However, the queries to the authoritative server come
> in on the same interface as the "regular" queries from the LAN, which
> means the auth-server configuration directive is causing me trouble.
>
> I've tried the following combinations:
>
> - Setting auth-server to be the internal interface; this makes outside
>    transfers and queries work, but local (recursive) ones fail.
>
> - Setting a separate IP on a dummy interface and specifying dummy0 as
>    parameter to auth-server. This has the same effect as not setting
>    auth-server.
>
> I guess what I'd like to be able to do is specify auth-server per IP
> address rather than per interface; doing so via a dummy interface is
> fine, however, as stated above that doesn't currently work.
>
> Any help would be greatly appreciated. I'm running dnsmasq v2.67test3 on
> cerowrt.
>

You _can_ specify auth-server per IP address

--auth-server=example.com,192.168.1.1

Is that the solution to your problem, or have I missed something?


Simon.