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Simon Kelley9e4abcb2004-01-22 19:47:41 +00001# Configuration file for dnsmasq.
2#
3# Format is one option per line, legal options are the same
4# as the long options legal on the command line. See
5# "/usr/sbin/dnsmasq --help" or "man 8 dnsmasq" for details.
6
Simon Kelley2f777972012-04-16 14:58:53 +01007# Listen on this specific port instead of the standard DNS port
8# (53). Setting this to zero completely disables DNS function,
9# leaving only DHCP and/or TFTP.
10#port=5353
11
Simon Kelleyb8187c82005-11-26 21:46:27 +000012# The following two options make you a better netizen, since they
Simon Kelley9e4abcb2004-01-22 19:47:41 +000013# tell dnsmasq to filter out queries which the public DNS cannot
Simon Kelleyb8187c82005-11-26 21:46:27 +000014# answer, and which load the servers (especially the root servers)
Simon Kelley572b41e2011-02-18 18:11:18 +000015# unnecessarily. If you have a dial-on-demand link they also stop
16# these requests from bringing up the link unnecessarily.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000017
Simon Kelley3d8df262005-08-29 12:19:27 +010018# Never forward plain names (without a dot or domain part)
Simon Kelley16972692006-10-16 20:04:18 +010019#domain-needed
Simon Kelleyc1bb8502004-08-11 18:40:17 +010020# Never forward addresses in the non-routed address spaces.
Simon Kelley16972692006-10-16 20:04:18 +010021#bogus-priv
Simon Kelley9e4abcb2004-01-22 19:47:41 +000022
23
Simon Kelleyc1bb8502004-08-11 18:40:17 +010024# Uncomment this to filter useless windows-originated DNS requests
25# which can trigger dial-on-demand links needlessly.
Simon Kelleyb8187c82005-11-26 21:46:27 +000026# Note that (amongst other things) this blocks all SRV requests,
Simon Kelley824af852008-02-12 20:43:05 +000027# so don't use it if you use eg Kerberos, SIP, XMMP or Google-talk.
Simon Kelleyf6b7dc42005-01-23 12:06:08 +000028# This option only affects forwarding, SRV records originating for
29# dnsmasq (via srv-host= lines) are not suppressed by it.
Simon Kelleyc1bb8502004-08-11 18:40:17 +010030#filterwin2k
31
Simon Kelley9e4abcb2004-01-22 19:47:41 +000032# Change this line if you want dns to get its upstream servers from
Simon Kelleyb8187c82005-11-26 21:46:27 +000033# somewhere other that /etc/resolv.conf
Simon Kelley9e4abcb2004-01-22 19:47:41 +000034#resolv-file=
35
Simon Kelley1ab84e22004-01-29 16:48:35 +000036# By default, dnsmasq will send queries to any of the upstream
37# servers it knows about and tries to favour servers to are known
38# to be up. Uncommenting this forces dnsmasq to try each query
39# with each server strictly in the order they appear in
40# /etc/resolv.conf
41#strict-order
42
Simon Kelley9e4abcb2004-01-22 19:47:41 +000043# If you don't want dnsmasq to read /etc/resolv.conf or any other
Simon Kelleyb8187c82005-11-26 21:46:27 +000044# file, getting its servers from this file instead (see below), then
Simon Kelley832af0b2007-01-21 20:01:28 +000045# uncomment this.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000046#no-resolv
47
48# If you don't want dnsmasq to poll /etc/resolv.conf or other resolv
49# files for changes and re-read them then uncomment this.
50#no-poll
51
Simon Kelleyb8187c82005-11-26 21:46:27 +000052# Add other name servers here, with domain specs if they are for
Simon Kelley9e4abcb2004-01-22 19:47:41 +000053# non-public domains.
54#server=/localnet/192.168.0.1
55
Simon Kelley28866e92011-02-14 20:19:14 +000056# Example of routing PTR queries to nameservers: this will send all
Simon Kelleyf2621c72007-04-29 19:47:21 +010057# address->name queries for 192.168.3/24 to nameserver 10.1.2.3
58#server=/3.168.192.in-addr.arpa/10.1.2.3
59
Simon Kelley9e4abcb2004-01-22 19:47:41 +000060# Add local-only domains here, queries in these domains are answered
61# from /etc/hosts or DHCP only.
62#local=/localnet/
63
64# Add domains which you want to force to an IP address here.
Simon Kelley28866e92011-02-14 20:19:14 +000065# The example below send any host in double-click.net to a local
66# web-server.
67#address=/double-click.net/127.0.0.1
Simon Kelley9e4abcb2004-01-22 19:47:41 +000068
Simon Kelley824af852008-02-12 20:43:05 +000069# --address (and --server) work with IPv6 addresses too.
70#address=/www.thekelleys.org.uk/fe80::20d:60ff:fe36:f83
71
Simon Kelley28866e92011-02-14 20:19:14 +000072# You can control how dnsmasq talks to a server: this forces
Simon Kelley824af852008-02-12 20:43:05 +000073# queries to 10.1.2.3 to be routed via eth1
Simon Kelley8ef5ada2010-06-03 19:42:45 +010074# server=10.1.2.3@eth1
Simon Kelley824af852008-02-12 20:43:05 +000075
76# and this sets the source (ie local) address used to talk to
77# 10.1.2.3 to 192.168.1.1 port 55 (there must be a interface with that
78# IP on the machine, obviously).
Simon Kelley8ef5ada2010-06-03 19:42:45 +010079# server=10.1.2.3@192.168.1.1#55
Simon Kelley824af852008-02-12 20:43:05 +000080
Simon Kelleyf6b7dc42005-01-23 12:06:08 +000081# If you want dnsmasq to change uid and gid to something other
82# than the default, edit the following lines.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000083#user=
84#group=
85
Simon Kelleyb8187c82005-11-26 21:46:27 +000086# If you want dnsmasq to listen for DHCP and DNS requests only on
87# specified interfaces (and the loopback) give the name of the
88# interface (eg eth0) here.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000089# Repeat the line for more than one interface.
90#interface=
91# Or you can specify which interface _not_ to listen on
92#except-interface=
93# Or which to listen on by address (remember to include 127.0.0.1 if
94# you use this.)
95#listen-address=
Simon Kelley3d8df262005-08-29 12:19:27 +010096# If you want dnsmasq to provide only DNS service on an interface,
97# configure it as shown above, and then use the following line to
Simon Kelley28866e92011-02-14 20:19:14 +000098# disable DHCP and TFTP on it.
Simon Kelley3d8df262005-08-29 12:19:27 +010099#no-dhcp-interface=
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000100
Simon Kelley44a2a312004-03-10 20:04:35 +0000101# On systems which support it, dnsmasq binds the wildcard address,
102# even when it is listening on only some interfaces. It then discards
Simon Kelleyb8187c82005-11-26 21:46:27 +0000103# requests that it shouldn't reply to. This has the advantage of
Simon Kelley44a2a312004-03-10 20:04:35 +0000104# working even when interfaces come and go and change address. If you
105# want dnsmasq to really bind only the interfaces it is listening on,
Simon Kelleyb8187c82005-11-26 21:46:27 +0000106# uncomment this option. About the only time you may need this is when
Simon Kelley44a2a312004-03-10 20:04:35 +0000107# running another nameserver on the same machine.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000108#bind-interfaces
Simon Kelley44a2a312004-03-10 20:04:35 +0000109
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000110# If you don't want dnsmasq to read /etc/hosts, uncomment the
111# following line.
112#no-hosts
113# or if you want it to read another file, as well as /etc/hosts, use
114# this.
115#addn-hosts=/etc/banner_add_hosts
116
117# Set this (and domain: see below) if you want to have a domain
118# automatically added to simple names in a hosts-file.
119#expand-hosts
120
Simon Kelley44a2a312004-03-10 20:04:35 +0000121# Set the domain for dnsmasq. this is optional, but if it is set, it
122# does the following things.
123# 1) Allows DHCP hosts to have fully qualified domain names, as long
124# as the domain part matches this setting.
125# 2) Sets the "domain" DHCP option thereby potentially setting the
126# domain of all systems configured by DHCP
127# 3) Provides the domain part for "expand-hosts"
128#domain=thekelleys.org.uk
Simon Kelleyb8187c82005-11-26 21:46:27 +0000129
Simon Kelley9009d742008-11-14 20:04:27 +0000130# Set a different domain for a particular subnet
131#domain=wireless.thekelleys.org.uk,192.168.2.0/24
132
133# Same idea, but range rather then subnet
134#domain=reserved.thekelleys.org.uk,192.68.3.100,192.168.3.200
135
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000136# Uncomment this to enable the integrated DHCP server, you need
Simon Kelleyb8187c82005-11-26 21:46:27 +0000137# to supply the range of addresses available for lease and optionally
Simon Kelley44a2a312004-03-10 20:04:35 +0000138# a lease time. If you have more than one network, you will need to
139# repeat this for each network on which you want to supply DHCP
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000140# service.
141#dhcp-range=192.168.0.50,192.168.0.150,12h
142
Simon Kelley44a2a312004-03-10 20:04:35 +0000143# This is an example of a DHCP range where the netmask is given. This
Simon Kelleyb8187c82005-11-26 21:46:27 +0000144# is needed for networks we reach the dnsmasq DHCP server via a relay
Simon Kelley44a2a312004-03-10 20:04:35 +0000145# agent. If you don't know what a DHCP relay agent is, you probably
146# don't need to worry about this.
147#dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,12h
148
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100149# This is an example of a DHCP range which sets a tag, so that
Simon Kelley44a2a312004-03-10 20:04:35 +0000150# some DHCP options may be set only for this network.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100151#dhcp-range=set:red,192.168.0.50,192.168.0.150
Simon Kelley44a2a312004-03-10 20:04:35 +0000152
Simon Kelley28866e92011-02-14 20:19:14 +0000153# Use this DHCP range only when the tag "green" is set.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100154#dhcp-range=tag:green,192.168.0.50,192.168.0.150,12h
155
156# Specify a subnet which can't be used for dynamic address allocation,
157# is available for hosts with matching --dhcp-host lines. Note that
158# dhcp-host declarations will be ignored unless there is a dhcp-range
159# of some type for the subnet in question.
160# In this case the netmask is implied (it comes from the network
Simon Kelley28866e92011-02-14 20:19:14 +0000161# configuration on the machine running dnsmasq) it is possible to give
162# an explicit netmask instead.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100163#dhcp-range=192.168.0.0,static
Simon Kelley28866e92011-02-14 20:19:14 +0000164
Simon Kelley843c96b2012-02-27 17:42:38 +0000165# Enable DHCPv6. Note that the prefix-length does not need to be specified
166# and defaults to 64 if missing/
167#dhcp-range=1234::2, 1234::500, 64, 12h
168
Simon Kelley0010b472012-02-29 12:18:30 +0000169# Do Router Advertisements, BUT NOT DHCP for this subnet.
Simon Kelley843c96b2012-02-27 17:42:38 +0000170#dhcp-range=1234::, ra-only
171
Simon Kelley7023e382012-03-09 12:05:49 +0000172# Do Router Advertisements, BUT NOT DHCP for this subnet, also try and
173# add names to the DNS for the IPv6 address of SLAAC-configured dual-stack
174# hosts. Use the DHCPv4 lease to derive the name, network segment and
175# MAC address and assume that the host will also have an
176# IPv6 address calculated using the SLAAC alogrithm.
Simon Kelley7023e382012-03-09 12:05:49 +0000177#dhcp-range=1234::, ra-names
178
Simon Kelley0010b472012-02-29 12:18:30 +0000179# Do Router Advertisements, BUT NOT DHCP for this subnet.
180# Set the lifetime to 46 hours. (Note: minimum lifetime is 2 hours.)
181#dhcp-range=1234::, ra-only, 48h
182
Simon Kelleye8ca69e2012-03-26 21:23:26 +0100183# Do DHCP and Router Advertisements for this subnet. Set the A bit in the RA
184# so that clients can use SLAAC addresses as well as DHCP ones.
185#dhcp-range=1234::2, 1234::500, slaac
186
187# Do Router Advertisements and stateless DHCP for this subnet. Clients will
188# not get addresses from DHCP, but they will get other configuration information.
189# They will use SLAAC for addresses.
190#dhcp-range=1234::, ra-stateless
191
192# Do stateless DHCP, SLAAC, and generate DNS names for SLAAC addresses
193# from DHCPv4 leases.
194#dhcp-range=1234::, ra-stateless, ra-names
195
196# Do router advertisements for all subnets where we're doing DHCPv6
197# Unless overriden by ra-stateless, ra-names, et al, the router
198# advertisements will have the M and O bits set, so that the clients
199# get addresses and configuration from DHCPv6, and the A bit reset, so the
200# clients don't use SLAAC addresses.
201#enable-ra
202
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000203# Supply parameters for specified hosts using DHCP. There are lots
Simon Kelley1ab84e22004-01-29 16:48:35 +0000204# of valid alternatives, so we will give examples of each. Note that
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000205# IP addresses DO NOT have to be in the range given above, they just
Simon Kelley1ab84e22004-01-29 16:48:35 +0000206# need to be on the same network. The order of the parameters in these
Simon Kelley572b41e2011-02-18 18:11:18 +0000207# do not matter, it's permissible to give name, address and MAC in any
208# order.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000209
Simon Kelley28866e92011-02-14 20:19:14 +0000210# Always allocate the host with Ethernet address 11:22:33:44:55:66
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000211# The IP address 192.168.0.60
212#dhcp-host=11:22:33:44:55:66,192.168.0.60
213
214# Always set the name of the host with hardware address
215# 11:22:33:44:55:66 to be "fred"
216#dhcp-host=11:22:33:44:55:66,fred
217
Simon Kelley28866e92011-02-14 20:19:14 +0000218# Always give the host with Ethernet address 11:22:33:44:55:66
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000219# the name fred and IP address 192.168.0.60 and lease time 45 minutes
220#dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m
221
Simon Kelley28866e92011-02-14 20:19:14 +0000222# Give a host with Ethernet address 11:22:33:44:55:66 or
Simon Kelley9009d742008-11-14 20:04:27 +0000223# 12:34:56:78:90:12 the IP address 192.168.0.60. Dnsmasq will assume
Simon Kelley28866e92011-02-14 20:19:14 +0000224# that these two Ethernet interfaces will never be in use at the same
Simon Kelley9009d742008-11-14 20:04:27 +0000225# time, and give the IP address to the second, even if it is already
226# in use by the first. Useful for laptops with wired and wireless
227# addresses.
228#dhcp-host=11:22:33:44:55:66,12:34:56:78:90:12,192.168.0.60
229
Simon Kelley824af852008-02-12 20:43:05 +0000230# Give the machine which says its name is "bert" IP address
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000231# 192.168.0.70 and an infinite lease
232#dhcp-host=bert,192.168.0.70,infinite
233
Simon Kelleyb8187c82005-11-26 21:46:27 +0000234# Always give the host with client identifier 01:02:02:04
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000235# the IP address 192.168.0.60
236#dhcp-host=id:01:02:02:04,192.168.0.60
237
238# Always give the host with client identifier "marjorie"
239# the IP address 192.168.0.60
240#dhcp-host=id:marjorie,192.168.0.60
241
Simon Kelley1ab84e22004-01-29 16:48:35 +0000242# Enable the address given for "judge" in /etc/hosts
243# to be given to a machine presenting the name "judge" when
244# it asks for a DHCP lease.
245#dhcp-host=judge
246
Simon Kelley28866e92011-02-14 20:19:14 +0000247# Never offer DHCP service to a machine whose Ethernet
Simon Kelley33820b72004-04-03 21:10:00 +0100248# address is 11:22:33:44:55:66
249#dhcp-host=11:22:33:44:55:66,ignore
250
Simon Kelley28866e92011-02-14 20:19:14 +0000251# Ignore any client-id presented by the machine with Ethernet
Simon Kelleyb8187c82005-11-26 21:46:27 +0000252# address 11:22:33:44:55:66. This is useful to prevent a machine
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100253# being treated differently when running under different OS's or
254# between PXE boot and OS boot.
255#dhcp-host=11:22:33:44:55:66,id:*
256
Simon Kelleyb8187c82005-11-26 21:46:27 +0000257# Send extra options which are tagged as "red" to
Simon Kelley28866e92011-02-14 20:19:14 +0000258# the machine with Ethernet address 11:22:33:44:55:66
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100259#dhcp-host=11:22:33:44:55:66,set:red
Simon Kelley33820b72004-04-03 21:10:00 +0100260
Simon Kelleyb8187c82005-11-26 21:46:27 +0000261# Send extra options which are tagged as "red" to
Simon Kelley28866e92011-02-14 20:19:14 +0000262# any machine with Ethernet address starting 11:22:33:
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100263#dhcp-host=11:22:33:*:*:*,set:red
Simon Kelley0a852542005-03-23 20:28:59 +0000264
Simon Kelley843c96b2012-02-27 17:42:38 +0000265# Give a fixed IPv6 address and name to client with
266# DUID 00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2
267# Note the MAC addresses CANNOT be used to identify DHCPv6 clients.
268# Note also the they [] around the IPv6 address are obilgatory.
269#dhcp-host=id:00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2, fred, [1234::5]
270
Simon Kelley3862deb2012-01-06 20:16:07 +0000271# Ignore any clients which are not specified in dhcp-host lines
Simon Kelley28866e92011-02-14 20:19:14 +0000272# or /etc/ethers. Equivalent to ISC "deny unknown-clients".
273# This relies on the special "known" tag which is set when
Simon Kelley5aabfc72007-08-29 11:24:47 +0100274# a host is matched.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100275#dhcp-ignore=tag:!known
Simon Kelley5aabfc72007-08-29 11:24:47 +0100276
Simon Kelleya2226412004-05-13 20:27:08 +0100277# Send extra options which are tagged as "red" to any machine whose
278# DHCP vendorclass string includes the substring "Linux"
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100279#dhcp-vendorclass=set:red,Linux
Simon Kelleya2226412004-05-13 20:27:08 +0100280
Simon Kelleyb8187c82005-11-26 21:46:27 +0000281# Send extra options which are tagged as "red" to any machine one
Simon Kelleya2226412004-05-13 20:27:08 +0100282# of whose DHCP userclass strings includes the substring "accounts"
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100283#dhcp-userclass=set:red,accounts
Simon Kelleya2226412004-05-13 20:27:08 +0100284
Simon Kelleycdeda282006-03-16 20:16:06 +0000285# Send extra options which are tagged as "red" to any machine whose
286# MAC address matches the pattern.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100287#dhcp-mac=set:red,00:60:8C:*:*:*
Simon Kelleycdeda282006-03-16 20:16:06 +0000288
Simon Kelley44a2a312004-03-10 20:04:35 +0000289# If this line is uncommented, dnsmasq will read /etc/ethers and act
290# on the ethernet-address/IP pairs found there just as if they had
291# been given as --dhcp-host options. Useful if you keep
292# MAC-address/host mappings there for other purposes.
293#read-ethers
294
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000295# Send options to hosts which ask for a DHCP lease.
296# See RFC 2132 for details of available options.
Simon Kelley28866e92011-02-14 20:19:14 +0000297# Common options can be given to dnsmasq by name:
Simon Kelleyf2621c72007-04-29 19:47:21 +0100298# run "dnsmasq --help dhcp" to get a list.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000299# Note that all the common settings, such as netmask and
300# broadcast address, DNS server and default route, are given
Simon Kelley28866e92011-02-14 20:19:14 +0000301# sane defaults by dnsmasq. You very likely will not need
Simon Kelley1ab84e22004-01-29 16:48:35 +0000302# any dhcp-options. If you use Windows clients and Samba, there
303# are some options which are recommended, they are detailed at the
304# end of this section.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000305
Simon Kelleycdeda282006-03-16 20:16:06 +0000306# Override the default route supplied by dnsmasq, which assumes the
307# router is the same machine as the one running dnsmasq.
308#dhcp-option=3,1.2.3.4
309
Simon Kelleyf2621c72007-04-29 19:47:21 +0100310# Do the same thing, but using the option name
311#dhcp-option=option:router,1.2.3.4
312
Simon Kelley832af0b2007-01-21 20:01:28 +0000313# Override the default route supplied by dnsmasq and send no default
314# route at all. Note that this only works for the options sent by
Simon Kelley28866e92011-02-14 20:19:14 +0000315# default (1, 3, 6, 12, 28) the same line will send a zero-length option
Simon Kelley832af0b2007-01-21 20:01:28 +0000316# for all other option numbers.
317#dhcp-option=3
318
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000319# Set the NTP time server addresses to 192.168.0.4 and 10.10.0.5
Simon Kelleyf2621c72007-04-29 19:47:21 +0100320#dhcp-option=option:ntp-server,192.168.0.4,10.10.0.5
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000321
Simon Kelley843c96b2012-02-27 17:42:38 +0000322# Send DHCPv6 option. Note [] around IPv6 addresses.
Simon Kelley0010b472012-02-29 12:18:30 +0000323#dhcp-option=option6:dns-server,[1234::77],[1234::88]
324
325# Send DHCPv6 option for namservers as the machine running
326# dnsmasq and another.
327#dhcp-option=option6:dns-server,[::],[1234::88]
Simon Kelley843c96b2012-02-27 17:42:38 +0000328
Simon Kelleyb8187c82005-11-26 21:46:27 +0000329# Set the NTP time server address to be the same machine as
Simon Kelley1ab84e22004-01-29 16:48:35 +0000330# is running dnsmasq
331#dhcp-option=42,0.0.0.0
332
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000333# Set the NIS domain name to "welly"
334#dhcp-option=40,welly
335
Simon Kelley1ab84e22004-01-29 16:48:35 +0000336# Set the default time-to-live to 50
337#dhcp-option=23,50
338
339# Set the "all subnets are local" flag
340#dhcp-option=27,1
341
Simon Kelley33820b72004-04-03 21:10:00 +0100342# Send the etherboot magic flag and then etherboot options (a string).
343#dhcp-option=128,e4:45:74:68:00:00
344#dhcp-option=129,NIC=eepro100
345
Simon Kelleyb8187c82005-11-26 21:46:27 +0000346# Specify an option which will only be sent to the "red" network
Simon Kelley44a2a312004-03-10 20:04:35 +0000347# (see dhcp-range for the declaration of the "red" network)
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100348# Note that the tag: part must precede the option: part.
349#dhcp-option = tag:red, option:ntp-server, 192.168.1.1
Simon Kelley44a2a312004-03-10 20:04:35 +0000350
Simon Kelley1ab84e22004-01-29 16:48:35 +0000351# The following DHCP options set up dnsmasq in the same way as is specified
Simon Kelleyb8187c82005-11-26 21:46:27 +0000352# for the ISC dhcpcd in
Simon Kelley1ab84e22004-01-29 16:48:35 +0000353# http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt
354# adapted for a typical dnsmasq installation where the host running
355# dnsmasq is also the host running samba.
Simon Kelley28866e92011-02-14 20:19:14 +0000356# you may want to uncomment some or all of them if you use
Simon Kelley9009d742008-11-14 20:04:27 +0000357# Windows clients and Samba.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000358#dhcp-option=19,0 # option ip-forwarding off
Simon Kelley1ab84e22004-01-29 16:48:35 +0000359#dhcp-option=44,0.0.0.0 # set netbios-over-TCP/IP nameserver(s) aka WINS server(s)
360#dhcp-option=45,0.0.0.0 # netbios datagram distribution server
361#dhcp-option=46,8 # netbios node type
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100362
Simon Kelley03bfcf62012-01-07 14:37:37 +0000363# Send an empty WPAD option. This may be REQUIRED to get windows 7 to behave.
364#dhcp-option=252,"\n"
365
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100366# Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
367# probably doesn't support this......
Simon Kelleyf2621c72007-04-29 19:47:21 +0100368#dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com
Simon Kelley1ab84e22004-01-29 16:48:35 +0000369
Simon Kelleycdeda282006-03-16 20:16:06 +0000370# Send RFC-3442 classless static routes (note the netmask encoding)
371#dhcp-option=121,192.168.1.0/24,1.2.3.4,10.0.0.0/8,5.6.7.8
372
Simon Kelley28866e92011-02-14 20:19:14 +0000373# Send vendor-class specific options encapsulated in DHCP option 43.
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000374# The meaning of the options is defined by the vendor-class so
375# options are sent only when the client supplied vendor class
Simon Kelley28866e92011-02-14 20:19:14 +0000376# matches the class given here. (A substring match is OK, so "MSFT"
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000377# matches "MSFT" and "MSFT 5.0"). This example sets the
378# mtftp address to 0.0.0.0 for PXEClients.
Simon Kelley91dccd02005-03-31 17:48:32 +0100379#dhcp-option=vendor:PXEClient,1,0.0.0.0
380
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000381# Send microsoft-specific option to tell windows to release the DHCP lease
382# when it shuts down. Note the "i" flag, to tell dnsmasq to send the
383# value as a four-byte integer - that's what microsoft wants. See
384# http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
385#dhcp-option=vendor:MSFT,2,1i
386
Simon Kelley6b010842007-02-12 20:32:07 +0000387# Send the Encapsulated-vendor-class ID needed by some configurations of
388# Etherboot to allow is to recognise the DHCP server.
389#dhcp-option=vendor:Etherboot,60,"Etherboot"
390
391# Send options to PXELinux. Note that we need to send the options even
392# though they don't appear in the parameter request list, so we need
Simon Kelley28866e92011-02-14 20:19:14 +0000393# to use dhcp-option-force here.
Simon Kelley6b010842007-02-12 20:32:07 +0000394# See http://syslinux.zytor.com/pxe.php#special for details.
395# Magic number - needed before anything else is recognised
396#dhcp-option-force=208,f1:00:74:7e
397# Configuration file name
398#dhcp-option-force=209,configs/common
399# Path prefix
400#dhcp-option-force=210,/tftpboot/pxelinux/files/
401# Reboot time. (Note 'i' to send 32-bit value)
402#dhcp-option-force=211,30i
403
Simon Kelley28866e92011-02-14 20:19:14 +0000404# Set the boot filename for netboot/PXE. You will only need
Simon Kelley832af0b2007-01-21 20:01:28 +0000405# this is you want to boot machines over the network and you will need
406# a TFTP server; either dnsmasq's built in TFTP server or an
407# external one. (See below for how to enable the TFTP server.)
408#dhcp-boot=pxelinux.0
409
Simon Kelley7de060b2011-08-26 17:24:52 +0100410# The same as above, but use custom tftp-server instead machine running dnsmasq
411#dhcp-boot=pxelinux,server.name,192.168.1.100
412
Simon Kelley824af852008-02-12 20:43:05 +0000413# Boot for Etherboot gPXE. The idea is to send two different
414# filenames, the first loads gPXE, and the second tells gPXE what to
415# load. The dhcp-match sets the gpxe tag for requests from gPXE.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100416#dhcp-match=set:gpxe,175 # gPXE sends a 175 option.
417#dhcp-boot=tag:!gpxe,undionly.kpxe
Simon Kelley824af852008-02-12 20:43:05 +0000418#dhcp-boot=mybootimage
Simon Kelley28866e92011-02-14 20:19:14 +0000419
Simon Kelley73a08a22009-02-05 20:28:08 +0000420# Encapsulated options for Etherboot gPXE. All the options are
421# encapsulated within option 175
422#dhcp-option=encap:175, 1, 5b # priority code
Simon Kelley28866e92011-02-14 20:19:14 +0000423#dhcp-option=encap:175, 176, 1b # no-proxydhcp
424#dhcp-option=encap:175, 177, string # bus-id
Simon Kelley73a08a22009-02-05 20:28:08 +0000425#dhcp-option=encap:175, 189, 1b # BIOS drive code
426#dhcp-option=encap:175, 190, user # iSCSI username
427#dhcp-option=encap:175, 191, pass # iSCSI password
428
429# Test for the architecture of a netboot client. PXE clients are
430# supposed to send their architecture as option 93. (See RFC 4578)
431#dhcp-match=peecees, option:client-arch, 0 #x86-32
432#dhcp-match=itanics, option:client-arch, 2 #IA64
433#dhcp-match=hammers, option:client-arch, 6 #x86-64
Simon Kelley28866e92011-02-14 20:19:14 +0000434#dhcp-match=mactels, option:client-arch, 7 #EFI x86-64
Simon Kelley73a08a22009-02-05 20:28:08 +0000435
Simon Kelley7622fc02009-06-04 20:32:05 +0100436# Do real PXE, rather than just booting a single file, this is an
437# alternative to dhcp-boot.
438#pxe-prompt="What system shall I netboot?"
439# or with timeout before first available action is taken:
440#pxe-prompt="Press F8 for menu.", 60
441
442# Available boot services. for PXE.
Simon Kelley316e2732010-01-22 20:16:09 +0000443#pxe-service=x86PC, "Boot from local disk"
Simon Kelley7622fc02009-06-04 20:32:05 +0100444
445# Loads <tftp-root>/pxelinux.0 from dnsmasq TFTP server.
Simon Kelley28866e92011-02-14 20:19:14 +0000446#pxe-service=x86PC, "Install Linux", pxelinux
Simon Kelley7622fc02009-06-04 20:32:05 +0100447
448# Loads <tftp-root>/pxelinux.0 from TFTP server at 1.2.3.4.
449# Beware this fails on old PXE ROMS.
Simon Kelley28866e92011-02-14 20:19:14 +0000450#pxe-service=x86PC, "Install Linux", pxelinux, 1.2.3.4
Simon Kelley7622fc02009-06-04 20:32:05 +0100451
452# Use bootserver on network, found my multicast or broadcast.
453#pxe-service=x86PC, "Install windows from RIS server", 1
454
455# Use bootserver at a known IP address.
456#pxe-service=x86PC, "Install windows from RIS server", 1, 1.2.3.4
457
458# If you have multicast-FTP available,
459# information for that can be passed in a similar way using options 1
460# to 5. See page 19 of
Simon Kelley28866e92011-02-14 20:19:14 +0000461# http://download.intel.com/design/archives/wfm/downloads/pxespec.pdf
Simon Kelley7622fc02009-06-04 20:32:05 +0100462
Simon Kelley28866e92011-02-14 20:19:14 +0000463
Simon Kelley832af0b2007-01-21 20:01:28 +0000464# Enable dnsmasq's built-in TFTP server
465#enable-tftp
466
Simon Kelley28866e92011-02-14 20:19:14 +0000467# Set the root directory for files available via FTP.
Simon Kelley832af0b2007-01-21 20:01:28 +0000468#tftp-root=/var/ftpd
469
470# Make the TFTP server more secure: with this set, only files owned by
471# the user dnsmasq is running as will be send over the net.
472#tftp-secure
473
Simon Kelley28866e92011-02-14 20:19:14 +0000474# This option stops dnsmasq from negotiating a larger blocksize for TFTP
Simon Kelley1f15b812009-10-13 17:49:32 +0100475# transfers. It will slow things down, but may rescue some broken TFTP
476# clients.
477#tftp-no-blocksize
478
Simon Kelley832af0b2007-01-21 20:01:28 +0000479# Set the boot file name only when the "red" tag is set.
480#dhcp-boot=net:red,pxelinux.red-net
481
Simon Kelley7622fc02009-06-04 20:32:05 +0100482# An example of dhcp-boot with an external TFTP server: the name and IP
Simon Kelley832af0b2007-01-21 20:01:28 +0000483# address of the server are given after the filename.
Simon Kelley7622fc02009-06-04 20:32:05 +0100484# Can fail with old PXE ROMS. Overridden by --pxe-service.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000485#dhcp-boot=/var/ftpd/pxelinux.0,boothost,192.168.0.3
486
Simon Kelley7de060b2011-08-26 17:24:52 +0100487# If there are multiple external tftp servers having a same name
488# (using /etc/hosts) then that name can be specified as the
489# tftp_servername (the third option to dhcp-boot) and in that
490# case dnsmasq resolves this name and returns the resultant IP
491# addresses in round robin fasion. This facility can be used to
492# load balance the tftp load among a set of servers.
493#dhcp-boot=/var/ftpd/pxelinux.0,boothost,tftp_server_name
494
Simon Kelley44a2a312004-03-10 20:04:35 +0000495# Set the limit on DHCP leases, the default is 150
496#dhcp-lease-max=150
497
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000498# The DHCP server needs somewhere on disk to keep its lease database.
499# This defaults to a sane location, but if you want to change it, use
500# the line below.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000501#dhcp-leasefile=/var/lib/misc/dnsmasq.leases
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000502
Simon Kelleyb8187c82005-11-26 21:46:27 +0000503# Set the DHCP server to authoritative mode. In this mode it will barge in
504# and take over the lease for any client which broadcasts on the network,
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100505# whether it has a record of the lease or not. This avoids long timeouts
Simon Kelleyb8187c82005-11-26 21:46:27 +0000506# when a machine wakes up on a new network. DO NOT enable this if there's
Simon Kelley28866e92011-02-14 20:19:14 +0000507# the slightest chance that you might end up accidentally configuring a DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +0100508# server for your campus/company accidentally. The ISC server uses
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100509# the same option, and this URL provides more information:
Simon Kelley28866e92011-02-14 20:19:14 +0000510# http://www.isc.org/files/auth.html
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100511#dhcp-authoritative
512
Simon Kelley7cebd202006-05-06 14:13:33 +0100513# Run an executable when a DHCP lease is created or destroyed.
Simon Kelley28866e92011-02-14 20:19:14 +0000514# The arguments sent to the script are "add" or "del",
Simon Kelley7cebd202006-05-06 14:13:33 +0100515# then the MAC address, the IP address and finally the hostname
Simon Kelley28866e92011-02-14 20:19:14 +0000516# if there is one.
Simon Kelley7cebd202006-05-06 14:13:33 +0100517#dhcp-script=/bin/echo
518
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000519# Set the cachesize here.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000520#cache-size=150
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000521
522# If you want to disable negative caching, uncomment this.
523#no-negcache
524
Simon Kelleybe0f45c2012-07-16 13:35:25 +0100525# Normally responses which come from /etc/hosts and the DHCP lease
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000526# file have Time-To-Live set as zero, which conventionally means
Simon Kelleyb8187c82005-11-26 21:46:27 +0000527# do not cache further. If you are happy to trade lower load on the
528# server for potentially stale date, you can set a time-to-live (in
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000529# seconds) here.
530#local-ttl=
531
532# If you want dnsmasq to detect attempts by Verisign to send queries
533# to unregistered .com and .net hosts to its sitefinder service and
534# have dnsmasq instead return the correct NXDOMAIN response, uncomment
535# this line. You can add similar lines to do the same for other
536# registries which have implemented wildcard A records.
537#bogus-nxdomain=64.94.110.11
538
Simon Kelley1cff1662004-03-12 08:12:58 +0000539# If you want to fix up DNS results from upstream servers, use the
540# alias option. This only works for IPv4.
541# This alias makes a result of 1.2.3.4 appear as 5.6.7.8
542#alias=1.2.3.4,5.6.7.8
543# and this maps 1.2.3.x to 5.6.7.x
544#alias=1.2.3.0,5.6.7.0,255.255.255.0
Simon Kelley73a08a22009-02-05 20:28:08 +0000545# and this maps 192.168.0.10->192.168.0.40 to 10.0.0.10->10.0.0.40
546#alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000547
548# Change these lines if you want dnsmasq to serve MX records.
549
550# Return an MX record named "maildomain.com" with target
551# servermachine.com and preference 50
552#mx-host=maildomain.com,servermachine.com,50
553
554# Set the default target for MX records created using the localmx option.
555#mx-target=servermachine.com
556
557# Return an MX record pointing to the mx-target for all local
558# machines.
559#localmx
560
561# Return an MX record pointing to itself for all local machines.
562#selfmx
563
Simon Kelleyb8187c82005-11-26 21:46:27 +0000564# Change the following lines if you want dnsmasq to serve SRV
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000565# records. These are useful if you want to serve ldap requests for
566# Active Directory and other windows-originated DNS requests.
567# See RFC 2782.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000568# You may add multiple srv-host lines.
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000569# The fields are <name>,<target>,<port>,<priority>,<weight>
570# If the domain part if missing from the name (so that is just has the
571# service and protocol sections) then the domain given by the domain=
Simon Kelley0a852542005-03-23 20:28:59 +0000572# config option is used. (Note that expand-hosts does not need to be
573# set for this to work.)
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000574
575# A SRV record sending LDAP for the example.com domain to
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100576# ldapserver.example.com port 389
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000577#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389
578
579# A SRV record sending LDAP for the example.com domain to
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100580# ldapserver.example.com port 389 (using domain=)
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000581#domain=example.com
582#srv-host=_ldap._tcp,ldapserver.example.com,389
583
584# Two SRV records for LDAP, each with different priorities
585#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,1
586#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,2
587
588# A SRV record indicating that there is no LDAP server for the domain
Simon Kelleyb8187c82005-11-26 21:46:27 +0000589# example.com
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000590#srv-host=_ldap._tcp.example.com
591
Simon Kelley832af0b2007-01-21 20:01:28 +0000592# The following line shows how to make dnsmasq serve an arbitrary PTR
593# record. This is useful for DNS-SD. (Note that the
594# domain-name expansion done for SRV records _does_not
595# occur for PTR records.)
596#ptr-record=_http._tcp.dns-sd-services,"New Employee Page._http._tcp.dns-sd-services"
Simon Kelley0a852542005-03-23 20:28:59 +0000597
598# Change the following lines to enable dnsmasq to serve TXT records.
599# These are used for things like SPF and zeroconf. (Note that the
Simon Kelleyb8187c82005-11-26 21:46:27 +0000600# domain-name expansion done for SRV records _does_not
Simon Kelley0a852542005-03-23 20:28:59 +0000601# occur for TXT records.)
602
603#Example SPF.
Simon Kelley832af0b2007-01-21 20:01:28 +0000604#txt-record=example.com,"v=spf1 a -all"
Simon Kelley0a852542005-03-23 20:28:59 +0000605
606#Example zeroconf
607#txt-record=_http._tcp.example.com,name=value,paper=A4
608
Simon Kelley9009d742008-11-14 20:04:27 +0000609# Provide an alias for a "local" DNS name. Note that this _only_ works
610# for targets which are names from DHCP or /etc/hosts. Give host
611# "bert" another name, bertrand
612#cname=bertand,bert
Simon Kelley0a852542005-03-23 20:28:59 +0000613
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000614# For debugging purposes, log each DNS query as it passes through
615# dnsmasq.
616#log-queries
617
Simon Kelleyf2621c72007-04-29 19:47:21 +0100618# Log lots of extra information about DHCP transactions.
619#log-dhcp
620
Simon Kelley33820b72004-04-03 21:10:00 +0100621# Include a another lot of configuration options.
622#conf-file=/etc/dnsmasq.more.conf
Simon Kelley16972692006-10-16 20:04:18 +0100623#conf-dir=/etc/dnsmasq.d