[Dnsmasq-discuss] dnsmasq does not respond correctly on loopback(lo)

fred at damen.org fred at damen.org
Tue Oct 12 05:52:50 BST 2010


Greetings,

I have dnsmasq working using DHCP and DNS fine except that the dnsmasq
server responds incorrectly on the loopback address, i.e. other computers
that get ip address(s) (dhcp) and resolve names (DNS) works but resolving
dns names on the host on which dnsmasq is running indicates the configured
dns names are unresolvable.

/etc/resole.conf
nameserver 127.0.0.1
nameserver xx.xx.xx.xx

/etc/dnsmasq.conf
...
interface=lo
interface=eth0
listen-address=127.0.0.1
...

/var/log/messages
...
Oct 11 23:32:55 damen dnsmasq[17165]: started, version 2.52 cachesize 150
Oct 11 23:32:55 damen dnsmasq[17165]: compile time options: IPv6
GNU-getopt DBus no-I18N DHCP TFTP
Oct 11 23:32:55 damen dnsmasq-dhcp[17165]: DHCP, IP range 192.168.0.16 --
192.168.0.254, lease time 12h
Oct 11 23:32:55 damen dnsmasq[17165]: reading /etc/resolv.conf
Oct 11 23:32:55 damen dnsmasq[17165]: using nameserver xx.xx.xx.xx#53 Oct
11 23:32:55 damen dnsmasq[17165]: ignoring nameserver 127.0.0.1 - local
interface
Oct 11 23:32:55 damen dnsmasq[17165]: read /etc/hosts - 5 addresses ...

ping printer1
ping: unknown host printer1

dig @192.168.0.1 printer1
...
;; QUESTION SECTION:
;printer1.			IN	A


;; ANSWER SECTION:
printer1.		0	IN	A	192.168.0.101
...

dig @127.0.0.1 printer1
...
;; QUESTION SECTION:
;printer1.			IN	A

;; AUTHORITY SECTION:
.			6862	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2010101101
1800 900 604800 86400
...

uname -a
Linux damen.us 2.6.33.6-147.2.4.fc13.x86_64 #1 SMP Fri Jul 23 17:14:44 UTC
2010 x86_64 x86_64 x86_64 GNU/Linux


Any and all help appreciated,

Fred






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