[Dnsmasq-discuss] dnsmasq not working as DNS server for client machines

[Chris Green]

On Thu, May 22, 2014 at 11:08:22PM +0100, Chris Green wrote:
> On Thu, May 22, 2014 at 10:46:46PM +0100, Chris Green wrote:
> > I seem to have spoken too soon with my transfer of dnsmasq to a
> > different machine.
> > 
> > It's running on my desktop machine which is also an always on server.
> > DNS is working fine for the desktop machine itself but it's not
> > working for client machines.
> > 
> > DHCP is working though, so clients get an IP address OK and can talk
> > to other machines on the LAN if I specify IP addresses rather than
> > names.  
> > 
> > So how do I diagnose this?  It's on xubuntu 14.04 so it's made a
> > little opaque by not being able view 'real' DNS servers anywhere 
> > 
> Sorry about that abrupt end.  Not much to add though.
> 
> As a general comment it would be very useful to be able easily to see
> what DNS servers are being used.
> 
... a little more information.  DHCP clients are getting all the right
information, e.g. the laptop I'm using at the moment has:-

    IP Address:         192.168.1.125
    Broadcast Address:  192.168.1.255
    Subnet Mask:        255.255.255.0
    Default Route:      192.168.1.1
    Primary DNS:        192.168.1.4

The default route is an ADSL router and the primary DNS is my desktop
server machine running dnsmasq.  So it would appear that dnsmasq isn't
answering DNS queries rather than it's not doing DHCP correctly.

It's almost certainly a trivial configuration problem but I can't see
it at the moment.

-- 
Chris Green