[Dnsmasq-discuss] why sending to resolv-file server?

[richardvoigt at gmail.com]

On Mon, Dec 14, 2009 at 2:26 PM, B. Cook <bcook at poughkeepsieschools.org> wrote:
> Hello all,
>
> Dnsmasq version 2.50  Copyright (C) 2000-2009 Simon Kelley
> Compile time options no-IPv6 GNU-getopt no-DBus no-I18N DHCP TFTP
>
>
> I have a rather large setup (some 2500+ hosts) all getting dhcp from
> dnsmasq.
>
> I have 10 buildings all setup with dhcp-relay and such to get them back
> to the main one.
>
> My question is:
>
> I do not understand why requests are getting sent to the recursor when
> they do not exist..
>
> so say for example I have the internal domain name .pcsd and each
> building has a subdomain bldg1.pcsd, bldg2.pcsd..
>
> (each building has its own config) and we block unknowns from requesting
> dhcp so we have a large file with all the dhcp-host entries in it that
> each building config includes..
>
> Here is a basic entry from one of the files..
>
> domain=war.pcsd,10.20.24.0/22
> dhcp-range=war,10.20.24.33,10.20.25.128,255.255.252.0,4h
> dhcp-option=war,option:router,10.20.24.1
>
> and if dnsmasq serves the domain war.pcsd I do not need to put in an
> entry like this:
>
> server=/war.pcsd/10.20.0.16
> server=/24.20.10.in-addr.arpa/10.20.0.16
>
> yet, with the entry in or out if I do this:
>
> host totallyfakename.war.pcsd
>
> and then check the query.log for the recursor (bind in this case) it
> will show me that bind was asked for the entry.  Even though I directly
> asked dnsmasq.