I'm trying to setup Networkmanager to use dnsmasq to do DNS cache on a single Slackware machine that gets its IP address from the router. The reason that I want to use Networkmanager for this is that I want to have this working on my laptop that needs to connect to different wireless networks. Although I get the network-connection and the logfile mentions dnsmasq working it doesn't seem to cache, which I attribute to /etc/resolv.conf not having the localhost address.

I've set the configuration of Networkmanager as
With this configuration /etc/resolv.conf remains
So there is no localhost in that file, which I would expect for dnsmasq to work. I've tried to fix this by adding a file /etc/resolv.conf.head containing "nameserver 127.0.0.1" as recommended on the corresponding archlinux wiki. However this file is ignored and the resolv.conf file remains as above.

Can somebody provide me with a suggestion on how to make NetworkManager work with dnsmasq as I'm stuck on this and I can't find much guidance on Google.

Sometimes I really forget to check the "obvious" things.

With the above Networkmanager.conf networkmanager becomes responsible for starting dnsmasq. It can only start dnsmasq if it isn't running, so /etc/rc.d/rc.dnsmasq should be set as not executable. That way dns caching works as expected. Solved!

edit) For those that find this post through searching as this was equally difficult to find. Configuring dnsmasq started by Networkmanager is done by adding files in a dnsmasq.d directory containing the required options. These do get picked up, although I'm not sure whether they override the hardcoded options that are used when calling dnsmasq, see: http://cgit.freedesktop.org/NetworkM...-dns-dnsmasq.c (lines 270-300)