[Dnsmasq-discuss] server-side dynamic resolving

[Chris Wilson]

Hi Travis,

On Sat, 11 Aug 2012, Travis Hansen wrote:

> I'm attempting to integrate dnsmasq with mdns.  I'm not really sure
> how to go about it but I'll explain the scenario...
> 
> 1. My machine is known as '15z' and via mdns clients resolves as 15z.local
> 2. I have apache running mod_dnssd (not actually critical to the
> situation but gives context at least) with a virtual host
> 15z.foobar.dev
> 3. I'd like to make it so 15z.foobar.dev gets returned by dnsmasq as
> whatever the current value of 15z.local is (the server is running
> avahi).
> 
> Anyone have any great suggestions for me?  I've thought about
> combinations of entering cname records into dnsmasq and somehow trying
> to integrate that but ultimately

Do you control the DNS for the foobar.dev zone, and is it hosted by a full DNS
server (not dnsmasq)? If so, just put a CNAME in the zone file:

	15z IN CNAME 15z.local.

If not, and 15z registers itself with the dnsmasq DHCP server, then you can
bypass ahavi/mdns and just CNAME 15z.foobar.dev to the machine 15z in dnsmasq
config:

	cname=15z.foobar.dev,15z

> I couldn't get dnsmasq to return what the local *server* resolves a given name
> too (limited to just hosts/dhcp/upstream dns).

You probably can't do that without programming, so I suggest you find other ways
to achieve what you want first, such as CNAME.

> I'd rather not run stuff client side.

With a CNAME you don't need to run anything other than a standard resolver on
the client side, which most likely you already do.

Cheers, Chris.
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