[Dnsmasq-discuss] expand-hosts

[richardvoigt at gmail.com]

On Tue, Dec 28, 2010 at 5:18 PM, Jean-Pierre van Melis <
fraterdnsmasq at hetemail.com> wrote:

>  Hi Richard,
>
>  I own the the domain mirmana.com which points with most of its records
> including a wildcard to my private DSL-connection on which I have a DD-WRT
> router.
>
>  DD-WRT is running DNSMasq for its DHCP & DNS.
>  I have set my local domain also to mirmana.com.
>  I know this should really be mirmana.local, but I'm doing this so my
> portable devices will access the LAN-side of the services when they are used
> local and will get forwarded by the router when they access these same
> services from WAN.
>  This is the config generated by DD-WRT according to its webif:
>
>  :~# cat /tmp/dnsmasq.conf
> interface=br0
> resolv-file=/tmp/resolv.dnsmasq
> all-servers
> domain=mirmana.com
> dhcp-leasefile=/tmp/dnsmasq.leases
> dhcp-lease-max=21
> dhcp-option=lan,3,192.168.10.1
> dhcp-option=44,192.168.10.120
> dhcp-authoritative
> dhcp-range=lan,192.168.10.248,192.168.10.254,255.255.255.0,1440m
> dhcp-host=00:13:D3:08:CC:81,win32,192.168.10.120,144m
> .
> .
>  ptr-record=254.0.191.85.in-addr.arpa,cj1616-gateway.mirmana.com
> addn-hosts=/opt/etc/pixelserv/blacks
>
> dhcp-option=option:ntp-server,194.171.167.130,81.171.44.131,87.251.35.240,213.239.154.12,131.211.84.189
>
>  This is what happens when I resolve www.google.com and when I resolve the
> non-existing wwww-google.com
>
>  # host www.google.com
> www.google.com is an alias for www.l.google.com.
> www.l.google.com has address 74.125.77.104
> www.l.google.com has address 74.125.77.99
> www.l.google.com has address 74.125.77.147
> root at WAN:~# host wwww.google.com
> wwww.google.com.mirmana.com is an alias for jpmarion.dyndns.org.
> jpmarion.dyndns.org has address 85.191.0.241
>
>  I'm afraid I will now get a lecture about wildcards I should not be using
> or WAN-domains that are used on a LAN, but the point is really that I never
> asked for a 2nd query. There's even an option called 'expand-hosts', but I
> that's not turned on.
>  If a foreign DNS-server is a bit slow, my DNSMasq suddenly decides to
> return my WAN-IP.
>  I don't want this!
>
>  I want it to just query the record I asked it to and just give NXDOMAIN
> if it can't deliver.
>

It isn't dnsmasq performing the second query, it's your OS resolver service.
 Check your /etc/resolv.conf configuration, remove any "search-suffix" or
similar directive that might be in there.  Also note that this is a
per-client setting, it can't be centrally controlled with dnsmasq.


>
>  I understand the default behaviour can't suddenly be changed, so an
> optional variable called 'expand-never' could be given to achieve this.
>
>  Cheers all
>
>
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