Talk:Dnsmasq

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Revision as of 12:24, 30 August 2012 by Mrpsbrk (Talk | contribs) (Easier way to work with NetworkManager)

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Testing without "http://"

In the test section it is recommended that the reader tries

dig http://archlinux.org | grep "Query time"

However, on both my systems running dnsmasq-2.50, querying anything prefixed with a "http://" causes dnsmasq to automatically forward the query and not to cache the reply:

% dig "http://archlinux.org" | grep "Query time"; !#
;; Query time: 493 msec
;; Query time: 485 msec

The daemon logs

dnsmasq: forwarded query to 208.67.220.220
dnsmasq: forwarded query to 208.67.220.220

This might lead the reader to think dnsmasq is not working, when it actually works fine with:

% dig "archlinux.org" | grep "Query time"; !#
;; Query time: 508 msec
;; Query time: 0 msec

The daemon logs

dnsmasq: query[A] archlinux.org from 127.0.0.1
dnsmasq: forwarded archlinux.org to 208.67.222.222
dnsmasq: forwarded archlinux.org to 208.67.220.220
dnsmasq: reply archlinux.org is 66.211.214.131
dnsmasq: query[A] archlinux.org from 127.0.0.1
dnsmasq: cached archlinux.org is 66.211.214.131

So, I'm removing the "http://" prefix. -- Tresende 11:39, 12 November 2009 (EST)

need information for fixed IPs

when this is set in rc.conf I think that require :

{ echo "nameserver 127.0.0.1"; grep -v "^#" /etc/resolv.conf | head -2; } > /tmp/resolv.conf

then backup /etc/resolv.conf and last :

mv /tmp/resolv.conf /etc/resolv.conf

--Sputnick 17:59, 1 August 2011 (EDT)

Easier way to work with NetworkManager

If you add a line like

     dns=dnsmasq

to /etc/NetworkManager/NetworkManager.conf then not only will NetworkManager do the right thing about resolv.conf, it will also start up dnsmasq for us, which seems way easier. I just did it in my machine and it works OK. It uses a temp conf file for dnsmasq at /var/run/nm-dns-dnsmasq.conf, and resolv.conf has only 127.0.0.1. This is not OK if dnsmasq is used for DHCP server, but is very good for caching. As it seems to me this will be the most common pattern for people using NetworkManager, i added this at the start of the NetworkManager section, instead of at the end.

Also, i feel that calling "DHCP config" the section about adding 127.0.0.1 to resolv.conf is very easy to confuse with configuring the DHCP functionality of dnsmasq itself. So i just changed the name to "resolv.conf".

Mrpsbrk (talk) 03:35, 30 August 2012 (UTC)