dnsmasq sends out its own ip as dns-server dhcp option

Dieter@be · 2011-02-12 17:17:33

Hi,
i have a gateway / dns server on 192.168.1.1
I have a dhcp server on 192.168.1.2 (dnsmasq)
I configured dnsmasq to look into /etc/resolv.conf (well, that's actually default behavior) and use that to specify dns server when replying to client dhcp requests.
However, it sends out its own ip instead, which is *not cool*.

# cat /etc/resolv.conf
nameserver 192.168.1.1
#nameserver 127.0.0.1
#nameserver 212.71.0.33
# edpnet
nameserver 212.71.0.33

# grep -v ^# /etc/dnsmasq.conf | grep -v '^$'
domain-needed
bogus-priv
dhcp-range=192.168.1.5,192.168.1.255,12h
dhcp-host=q700
dhcp-host=dieter-ws
dhcp-host=dieter-dellD620-arch
dhcp-host=gibran
dhcp-host=hilde-compaq-arch
dhcp-host=hilde-vbox-win
dhcp-host=BRN_0441B3
dhcp-option=option:router,192.168.1.1
log-dhcp
# cat /etc/hosts
#
# /etc/hosts: static lookup table for host names
#

#<ip-address>    <hostname.domain.org>    <hostname>
127.0.0.1        localhost.localdomain    localhost 
192.168.1.2 dieter-p4sci-arch server
192.168.1.3 q700
192.168.1.5 dieter-ws
192.168.1.6 dieter-dellD620-arch
192.168.1.7 dieter-delle5410-arch gibran
192.168.1.8 hilde-compaq-arch
192.168.1.9 hilde-vbox-win
192.168.1.10 BRN_0441B3 hl5250
178.79.146.162 dieter-linode1
# End of file

here's what I see in /var/log/daemon.log, when I start dnsmasq and do a dhcp request.
Note the discrepancy between what it says as "using nameserver" and what it actually tells clients.

Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: started, version 2.55 cachesize 150
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: compile time options: IPv6 GNU-getopt no-DBus no-I18N DHCP TFTP
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq-dhcp[2168]: DHCP, IP range 192.168.1.5 -- 192.168.1.255, lease time 12h
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: reading /etc/resolv.conf
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: using nameserver 212.71.0.33#53
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: using nameserver 192.168.1.1#53
Feb 12 18:10:50 dieter-p4sci-arch dnsmasq[2168]: read /etc/hosts - 10 addresses
Feb 12 18:10:56 dieter-p4sci-arch dnsmasq-dhcp[2168]: 2764941049 available DHCP range: 192.168.1.5 -- 192.168.1.255
Feb 12 18:10:56 dieter-p4sci-arch dnsmasq-dhcp[2168]: 2764941049 DHCPRELEASE(eth0) 192.168.1.5 80:ee:73:09:fa:94 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 available DHCP range: 192.168.1.5 -- 192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 client provides name: dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 vendor class: dhcpcd-5.2.10:Linux-2.6.37-ARCH:i686:GenuineIntel
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPDISCOVER(eth0) 80:ee:73:09:fa:94 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPOFFER(eth0) 192.168.1.5 80:ee:73:09:fa:94 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 1:netmask, 121:classless-static-route, 33:static-route, 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 3:router, 6:dns-server, 12:hostname, 15:domain-name, 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 26:mtu, 28:broadcast, 42:ntp-server, 51:lease-time, 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 54:server-identifier, 58:T1, 59:T2, 119:domain-search
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 tags: known, eth0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 next server: 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  1 option: 53:message-type  02
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 54:server-identifier  192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 51:lease-time  00:00:a8:c0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 58:T1  00:00:54:60
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 59:T2  00:00:93:a8
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option:  1:netmask  255.255.255.0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 28:broadcast  192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option:  6:dns-server  192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option:  3:router  192.168.1.1
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 available DHCP range: 192.168.1.5 -- 192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 client provides name: dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 vendor class: dhcpcd-5.2.10:Linux-2.6.37-ARCH:i686:GenuineIntel
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPREQUEST(eth0) 192.168.1.5 80:ee:73:09:fa:94 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 DHCPACK(eth0) 192.168.1.5 80:ee:73:09:fa:94 dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 1:netmask, 121:classless-static-route, 33:static-route, 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 3:router, 6:dns-server, 12:hostname, 15:domain-name, 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 26:mtu, 28:broadcast, 42:ntp-server, 51:lease-time, 
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 requested options: 54:server-identifier, 58:T1, 59:T2, 119:domain-search
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 tags: known, eth0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 next server: 192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  1 option: 53:message-type  05
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 54:server-identifier  192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 51:lease-time  00:00:a8:c0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 58:T1  00:00:54:60
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 59:T2  00:00:93:a8
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option:  1:netmask  255.255.255.0
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option: 28:broadcast  192.168.1.255
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option:  6:dns-server  192.168.1.2
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  9 option: 12:hostname  dieter-ws
Feb 12 18:11:00 dieter-p4sci-arch dnsmasq-dhcp[2168]: 3497735943 sent size:  4 option:  3:router  192.168.1.1

Arch Linux

#1 2011-02-12 17:17:33

dnsmasq sends out its own ip as dns-server dhcp option

Board footer