[Dnsmasq-discuss] Debugging dnsmasq on Ubuntu

[Albert ARIBAUD]

Hi Joel,

Le Wed, 29 Mar 2017 09:43:33 -0500
Joel Whitehouse <code at joelwhitehouse.com> a écrit:

> I'm running ubuntu 14, which uses dnsmasq as a local resolver on 
> 127.0.1.1.  When I issue a dig query, dig informs me it's using 
> 127.0.1.1 as its resolver:
> 
> ;; Query time: 3 msec
> ;; SERVER: 127.0.1.1#53(127.0.1.1)
> ;; WHEN: Wed Mar 29 09:36:06 CDT 2017
> ;; MSG SIZE  rcvd: 63
> 
> 
> However, I would like to know what host dnsmasq is using as its 
> resolver.  On my system, `ps ax' shows that dnsmasq is started with
> the command:
> 
> /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts 
> --bind-interfaces 
> --pid-file=/run/sendsigs.omit.d/network-manager.dnsmasq.pid 
> --listen-address=127.0.1.1 
> --conf-file=/var/run/NetworkManager/dnsmasq.conf --cache-size=0 
> --proxy-dnssec --enable-dbus=org.freedesktop.NetworkManager.dnsmasq 
> –conf-dir=/etc/NetworkManager/dnsmasq.d
> 
> 
> Both the file /var/run/NetworkManager/dnsmasq.conf and the directory 
> /etc/NetworkManager/dnsmasq.d/ are empty, so it's likely that dnsmasq
> is receiving its resovlers from Network Manager over the dbus
> interface.
> 
> 
> Is there any way to get dnsmasq to log when it issues a new query to
> a resolver?

You can spy on DBus -- I think that's what Network Manager uses to
configure dnsmasq on the fly.

> -Joel

Amicalement,
-- 
Albert.