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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
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +000072# Add the IPs of all queries to yahoo.com, google.com, and their
73# subdomains to the vpn and search ipsets:
74#ipset=/yahoo.com/google.com/vpn,search
75
Simon Kelley28866e92011-02-14 20:19:14 +000076# You can control how dnsmasq talks to a server: this forces
Simon Kelley824af852008-02-12 20:43:05 +000077# queries to 10.1.2.3 to be routed via eth1
Simon Kelley8ef5ada2010-06-03 19:42:45 +010078# server=10.1.2.3@eth1
Simon Kelley824af852008-02-12 20:43:05 +000079
80# and this sets the source (ie local) address used to talk to
81# 10.1.2.3 to 192.168.1.1 port 55 (there must be a interface with that
82# IP on the machine, obviously).
Simon Kelley8ef5ada2010-06-03 19:42:45 +010083# server=10.1.2.3@192.168.1.1#55
Simon Kelley824af852008-02-12 20:43:05 +000084
Simon Kelleyf6b7dc42005-01-23 12:06:08 +000085# If you want dnsmasq to change uid and gid to something other
86# than the default, edit the following lines.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000087#user=
88#group=
89
Simon Kelleyb8187c82005-11-26 21:46:27 +000090# If you want dnsmasq to listen for DHCP and DNS requests only on
91# specified interfaces (and the loopback) give the name of the
92# interface (eg eth0) here.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000093# Repeat the line for more than one interface.
94#interface=
95# Or you can specify which interface _not_ to listen on
96#except-interface=
97# Or which to listen on by address (remember to include 127.0.0.1 if
98# you use this.)
99#listen-address=
Simon Kelley3d8df262005-08-29 12:19:27 +0100100# If you want dnsmasq to provide only DNS service on an interface,
101# configure it as shown above, and then use the following line to
Simon Kelley28866e92011-02-14 20:19:14 +0000102# disable DHCP and TFTP on it.
Simon Kelley3d8df262005-08-29 12:19:27 +0100103#no-dhcp-interface=
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000104
Simon Kelley44a2a312004-03-10 20:04:35 +0000105# On systems which support it, dnsmasq binds the wildcard address,
106# even when it is listening on only some interfaces. It then discards
Simon Kelleyb8187c82005-11-26 21:46:27 +0000107# requests that it shouldn't reply to. This has the advantage of
Simon Kelley44a2a312004-03-10 20:04:35 +0000108# working even when interfaces come and go and change address. If you
109# want dnsmasq to really bind only the interfaces it is listening on,
Simon Kelleyb8187c82005-11-26 21:46:27 +0000110# uncomment this option. About the only time you may need this is when
Simon Kelley44a2a312004-03-10 20:04:35 +0000111# running another nameserver on the same machine.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000112#bind-interfaces
Simon Kelley44a2a312004-03-10 20:04:35 +0000113
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000114# If you don't want dnsmasq to read /etc/hosts, uncomment the
115# following line.
116#no-hosts
117# or if you want it to read another file, as well as /etc/hosts, use
118# this.
119#addn-hosts=/etc/banner_add_hosts
120
121# Set this (and domain: see below) if you want to have a domain
122# automatically added to simple names in a hosts-file.
123#expand-hosts
124
Simon Kelley44a2a312004-03-10 20:04:35 +0000125# Set the domain for dnsmasq. this is optional, but if it is set, it
126# does the following things.
127# 1) Allows DHCP hosts to have fully qualified domain names, as long
128# as the domain part matches this setting.
129# 2) Sets the "domain" DHCP option thereby potentially setting the
130# domain of all systems configured by DHCP
131# 3) Provides the domain part for "expand-hosts"
132#domain=thekelleys.org.uk
Simon Kelleyb8187c82005-11-26 21:46:27 +0000133
Simon Kelley9009d742008-11-14 20:04:27 +0000134# Set a different domain for a particular subnet
135#domain=wireless.thekelleys.org.uk,192.168.2.0/24
136
137# Same idea, but range rather then subnet
138#domain=reserved.thekelleys.org.uk,192.68.3.100,192.168.3.200
139
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000140# Uncomment this to enable the integrated DHCP server, you need
Simon Kelleyb8187c82005-11-26 21:46:27 +0000141# to supply the range of addresses available for lease and optionally
Simon Kelley44a2a312004-03-10 20:04:35 +0000142# a lease time. If you have more than one network, you will need to
143# repeat this for each network on which you want to supply DHCP
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000144# service.
145#dhcp-range=192.168.0.50,192.168.0.150,12h
146
Simon Kelley44a2a312004-03-10 20:04:35 +0000147# This is an example of a DHCP range where the netmask is given. This
Simon Kelleyb8187c82005-11-26 21:46:27 +0000148# is needed for networks we reach the dnsmasq DHCP server via a relay
Simon Kelley44a2a312004-03-10 20:04:35 +0000149# agent. If you don't know what a DHCP relay agent is, you probably
150# don't need to worry about this.
151#dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,12h
152
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100153# This is an example of a DHCP range which sets a tag, so that
Simon Kelley44a2a312004-03-10 20:04:35 +0000154# some DHCP options may be set only for this network.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100155#dhcp-range=set:red,192.168.0.50,192.168.0.150
Simon Kelley44a2a312004-03-10 20:04:35 +0000156
Simon Kelley28866e92011-02-14 20:19:14 +0000157# Use this DHCP range only when the tag "green" is set.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100158#dhcp-range=tag:green,192.168.0.50,192.168.0.150,12h
159
160# Specify a subnet which can't be used for dynamic address allocation,
161# is available for hosts with matching --dhcp-host lines. Note that
162# dhcp-host declarations will be ignored unless there is a dhcp-range
163# of some type for the subnet in question.
164# In this case the netmask is implied (it comes from the network
Simon Kelley28866e92011-02-14 20:19:14 +0000165# configuration on the machine running dnsmasq) it is possible to give
166# an explicit netmask instead.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100167#dhcp-range=192.168.0.0,static
Simon Kelley28866e92011-02-14 20:19:14 +0000168
Simon Kelley843c96b2012-02-27 17:42:38 +0000169# Enable DHCPv6. Note that the prefix-length does not need to be specified
170# and defaults to 64 if missing/
171#dhcp-range=1234::2, 1234::500, 64, 12h
172
Simon Kelley0010b472012-02-29 12:18:30 +0000173# Do Router Advertisements, BUT NOT DHCP for this subnet.
Simon Kelley843c96b2012-02-27 17:42:38 +0000174#dhcp-range=1234::, ra-only
175
Simon Kelley7023e382012-03-09 12:05:49 +0000176# Do Router Advertisements, BUT NOT DHCP for this subnet, also try and
177# add names to the DNS for the IPv6 address of SLAAC-configured dual-stack
178# hosts. Use the DHCPv4 lease to derive the name, network segment and
179# MAC address and assume that the host will also have an
180# IPv6 address calculated using the SLAAC alogrithm.
Simon Kelley7023e382012-03-09 12:05:49 +0000181#dhcp-range=1234::, ra-names
182
Simon Kelley0010b472012-02-29 12:18:30 +0000183# Do Router Advertisements, BUT NOT DHCP for this subnet.
184# Set the lifetime to 46 hours. (Note: minimum lifetime is 2 hours.)
185#dhcp-range=1234::, ra-only, 48h
186
Simon Kelleye8ca69e2012-03-26 21:23:26 +0100187# Do DHCP and Router Advertisements for this subnet. Set the A bit in the RA
188# so that clients can use SLAAC addresses as well as DHCP ones.
189#dhcp-range=1234::2, 1234::500, slaac
190
191# Do Router Advertisements and stateless DHCP for this subnet. Clients will
192# not get addresses from DHCP, but they will get other configuration information.
193# They will use SLAAC for addresses.
194#dhcp-range=1234::, ra-stateless
195
196# Do stateless DHCP, SLAAC, and generate DNS names for SLAAC addresses
197# from DHCPv4 leases.
198#dhcp-range=1234::, ra-stateless, ra-names
199
200# Do router advertisements for all subnets where we're doing DHCPv6
201# Unless overriden by ra-stateless, ra-names, et al, the router
202# advertisements will have the M and O bits set, so that the clients
203# get addresses and configuration from DHCPv6, and the A bit reset, so the
204# clients don't use SLAAC addresses.
205#enable-ra
206
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000207# Supply parameters for specified hosts using DHCP. There are lots
Simon Kelley1ab84e22004-01-29 16:48:35 +0000208# of valid alternatives, so we will give examples of each. Note that
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000209# IP addresses DO NOT have to be in the range given above, they just
Simon Kelley1ab84e22004-01-29 16:48:35 +0000210# need to be on the same network. The order of the parameters in these
Simon Kelley572b41e2011-02-18 18:11:18 +0000211# do not matter, it's permissible to give name, address and MAC in any
212# order.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000213
Simon Kelley28866e92011-02-14 20:19:14 +0000214# Always allocate the host with Ethernet address 11:22:33:44:55:66
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000215# The IP address 192.168.0.60
216#dhcp-host=11:22:33:44:55:66,192.168.0.60
217
218# Always set the name of the host with hardware address
219# 11:22:33:44:55:66 to be "fred"
220#dhcp-host=11:22:33:44:55:66,fred
221
Simon Kelley28866e92011-02-14 20:19:14 +0000222# Always give the host with Ethernet address 11:22:33:44:55:66
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000223# the name fred and IP address 192.168.0.60 and lease time 45 minutes
224#dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m
225
Simon Kelley28866e92011-02-14 20:19:14 +0000226# Give a host with Ethernet address 11:22:33:44:55:66 or
Simon Kelley9009d742008-11-14 20:04:27 +0000227# 12:34:56:78:90:12 the IP address 192.168.0.60. Dnsmasq will assume
Simon Kelley28866e92011-02-14 20:19:14 +0000228# that these two Ethernet interfaces will never be in use at the same
Simon Kelley9009d742008-11-14 20:04:27 +0000229# time, and give the IP address to the second, even if it is already
230# in use by the first. Useful for laptops with wired and wireless
231# addresses.
232#dhcp-host=11:22:33:44:55:66,12:34:56:78:90:12,192.168.0.60
233
Simon Kelley824af852008-02-12 20:43:05 +0000234# Give the machine which says its name is "bert" IP address
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000235# 192.168.0.70 and an infinite lease
236#dhcp-host=bert,192.168.0.70,infinite
237
Simon Kelleyb8187c82005-11-26 21:46:27 +0000238# Always give the host with client identifier 01:02:02:04
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000239# the IP address 192.168.0.60
240#dhcp-host=id:01:02:02:04,192.168.0.60
241
242# Always give the host with client identifier "marjorie"
243# the IP address 192.168.0.60
244#dhcp-host=id:marjorie,192.168.0.60
245
Simon Kelley1ab84e22004-01-29 16:48:35 +0000246# Enable the address given for "judge" in /etc/hosts
247# to be given to a machine presenting the name "judge" when
248# it asks for a DHCP lease.
249#dhcp-host=judge
250
Simon Kelley28866e92011-02-14 20:19:14 +0000251# Never offer DHCP service to a machine whose Ethernet
Simon Kelley33820b72004-04-03 21:10:00 +0100252# address is 11:22:33:44:55:66
253#dhcp-host=11:22:33:44:55:66,ignore
254
Simon Kelley28866e92011-02-14 20:19:14 +0000255# Ignore any client-id presented by the machine with Ethernet
Simon Kelleyb8187c82005-11-26 21:46:27 +0000256# address 11:22:33:44:55:66. This is useful to prevent a machine
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100257# being treated differently when running under different OS's or
258# between PXE boot and OS boot.
259#dhcp-host=11:22:33:44:55:66,id:*
260
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# the machine with Ethernet address 11:22:33:44:55:66
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100263#dhcp-host=11:22:33:44:55:66,set:red
Simon Kelley33820b72004-04-03 21:10:00 +0100264
Simon Kelleyb8187c82005-11-26 21:46:27 +0000265# Send extra options which are tagged as "red" to
Simon Kelley28866e92011-02-14 20:19:14 +0000266# any machine with Ethernet address starting 11:22:33:
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100267#dhcp-host=11:22:33:*:*:*,set:red
Simon Kelley0a852542005-03-23 20:28:59 +0000268
Simon Kelley843c96b2012-02-27 17:42:38 +0000269# Give a fixed IPv6 address and name to client with
270# DUID 00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2
271# Note the MAC addresses CANNOT be used to identify DHCPv6 clients.
272# Note also the they [] around the IPv6 address are obilgatory.
273#dhcp-host=id:00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2, fred, [1234::5]
274
Simon Kelley3862deb2012-01-06 20:16:07 +0000275# Ignore any clients which are not specified in dhcp-host lines
Simon Kelley28866e92011-02-14 20:19:14 +0000276# or /etc/ethers. Equivalent to ISC "deny unknown-clients".
277# This relies on the special "known" tag which is set when
Simon Kelley5aabfc72007-08-29 11:24:47 +0100278# a host is matched.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100279#dhcp-ignore=tag:!known
Simon Kelley5aabfc72007-08-29 11:24:47 +0100280
Simon Kelleya2226412004-05-13 20:27:08 +0100281# Send extra options which are tagged as "red" to any machine whose
282# DHCP vendorclass string includes the substring "Linux"
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100283#dhcp-vendorclass=set:red,Linux
Simon Kelleya2226412004-05-13 20:27:08 +0100284
Simon Kelleyb8187c82005-11-26 21:46:27 +0000285# Send extra options which are tagged as "red" to any machine one
Simon Kelleya2226412004-05-13 20:27:08 +0100286# of whose DHCP userclass strings includes the substring "accounts"
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100287#dhcp-userclass=set:red,accounts
Simon Kelleya2226412004-05-13 20:27:08 +0100288
Simon Kelleycdeda282006-03-16 20:16:06 +0000289# Send extra options which are tagged as "red" to any machine whose
290# MAC address matches the pattern.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100291#dhcp-mac=set:red,00:60:8C:*:*:*
Simon Kelleycdeda282006-03-16 20:16:06 +0000292
Simon Kelley44a2a312004-03-10 20:04:35 +0000293# If this line is uncommented, dnsmasq will read /etc/ethers and act
294# on the ethernet-address/IP pairs found there just as if they had
295# been given as --dhcp-host options. Useful if you keep
296# MAC-address/host mappings there for other purposes.
297#read-ethers
298
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000299# Send options to hosts which ask for a DHCP lease.
300# See RFC 2132 for details of available options.
Simon Kelley28866e92011-02-14 20:19:14 +0000301# Common options can be given to dnsmasq by name:
Simon Kelleyf2621c72007-04-29 19:47:21 +0100302# run "dnsmasq --help dhcp" to get a list.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000303# Note that all the common settings, such as netmask and
304# broadcast address, DNS server and default route, are given
Simon Kelley28866e92011-02-14 20:19:14 +0000305# sane defaults by dnsmasq. You very likely will not need
Simon Kelley1ab84e22004-01-29 16:48:35 +0000306# any dhcp-options. If you use Windows clients and Samba, there
307# are some options which are recommended, they are detailed at the
308# end of this section.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000309
Simon Kelleycdeda282006-03-16 20:16:06 +0000310# Override the default route supplied by dnsmasq, which assumes the
311# router is the same machine as the one running dnsmasq.
312#dhcp-option=3,1.2.3.4
313
Simon Kelleyf2621c72007-04-29 19:47:21 +0100314# Do the same thing, but using the option name
315#dhcp-option=option:router,1.2.3.4
316
Simon Kelley832af0b2007-01-21 20:01:28 +0000317# Override the default route supplied by dnsmasq and send no default
318# route at all. Note that this only works for the options sent by
Simon Kelley28866e92011-02-14 20:19:14 +0000319# default (1, 3, 6, 12, 28) the same line will send a zero-length option
Simon Kelley832af0b2007-01-21 20:01:28 +0000320# for all other option numbers.
321#dhcp-option=3
322
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000323# Set the NTP time server addresses to 192.168.0.4 and 10.10.0.5
Simon Kelleyf2621c72007-04-29 19:47:21 +0100324#dhcp-option=option:ntp-server,192.168.0.4,10.10.0.5
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000325
Simon Kelley843c96b2012-02-27 17:42:38 +0000326# Send DHCPv6 option. Note [] around IPv6 addresses.
Simon Kelley0010b472012-02-29 12:18:30 +0000327#dhcp-option=option6:dns-server,[1234::77],[1234::88]
328
329# Send DHCPv6 option for namservers as the machine running
330# dnsmasq and another.
331#dhcp-option=option6:dns-server,[::],[1234::88]
Simon Kelley843c96b2012-02-27 17:42:38 +0000332
Simon Kelley23245c02012-07-18 16:21:11 +0100333# Ask client to poll for option changes every six hours. (RFC4242)
334#dhcp-option=option6:information-refresh-time,6h
335
Simon Kelleyb8187c82005-11-26 21:46:27 +0000336# Set the NTP time server address to be the same machine as
Simon Kelley1ab84e22004-01-29 16:48:35 +0000337# is running dnsmasq
338#dhcp-option=42,0.0.0.0
339
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000340# Set the NIS domain name to "welly"
341#dhcp-option=40,welly
342
Simon Kelley1ab84e22004-01-29 16:48:35 +0000343# Set the default time-to-live to 50
344#dhcp-option=23,50
345
346# Set the "all subnets are local" flag
347#dhcp-option=27,1
348
Simon Kelley33820b72004-04-03 21:10:00 +0100349# Send the etherboot magic flag and then etherboot options (a string).
350#dhcp-option=128,e4:45:74:68:00:00
351#dhcp-option=129,NIC=eepro100
352
Simon Kelleyb8187c82005-11-26 21:46:27 +0000353# Specify an option which will only be sent to the "red" network
Simon Kelley44a2a312004-03-10 20:04:35 +0000354# (see dhcp-range for the declaration of the "red" network)
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100355# Note that the tag: part must precede the option: part.
356#dhcp-option = tag:red, option:ntp-server, 192.168.1.1
Simon Kelley44a2a312004-03-10 20:04:35 +0000357
Simon Kelley1ab84e22004-01-29 16:48:35 +0000358# The following DHCP options set up dnsmasq in the same way as is specified
Simon Kelleyb8187c82005-11-26 21:46:27 +0000359# for the ISC dhcpcd in
Simon Kelley1ab84e22004-01-29 16:48:35 +0000360# http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt
361# adapted for a typical dnsmasq installation where the host running
362# dnsmasq is also the host running samba.
Simon Kelley28866e92011-02-14 20:19:14 +0000363# you may want to uncomment some or all of them if you use
Simon Kelley9009d742008-11-14 20:04:27 +0000364# Windows clients and Samba.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000365#dhcp-option=19,0 # option ip-forwarding off
Simon Kelley1ab84e22004-01-29 16:48:35 +0000366#dhcp-option=44,0.0.0.0 # set netbios-over-TCP/IP nameserver(s) aka WINS server(s)
367#dhcp-option=45,0.0.0.0 # netbios datagram distribution server
368#dhcp-option=46,8 # netbios node type
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100369
Simon Kelley03bfcf62012-01-07 14:37:37 +0000370# Send an empty WPAD option. This may be REQUIRED to get windows 7 to behave.
371#dhcp-option=252,"\n"
372
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100373# Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
374# probably doesn't support this......
Simon Kelleyf2621c72007-04-29 19:47:21 +0100375#dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com
Simon Kelley1ab84e22004-01-29 16:48:35 +0000376
Simon Kelleycdeda282006-03-16 20:16:06 +0000377# Send RFC-3442 classless static routes (note the netmask encoding)
378#dhcp-option=121,192.168.1.0/24,1.2.3.4,10.0.0.0/8,5.6.7.8
379
Simon Kelley28866e92011-02-14 20:19:14 +0000380# Send vendor-class specific options encapsulated in DHCP option 43.
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000381# The meaning of the options is defined by the vendor-class so
382# options are sent only when the client supplied vendor class
Simon Kelley28866e92011-02-14 20:19:14 +0000383# matches the class given here. (A substring match is OK, so "MSFT"
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000384# matches "MSFT" and "MSFT 5.0"). This example sets the
385# mtftp address to 0.0.0.0 for PXEClients.
Simon Kelley91dccd02005-03-31 17:48:32 +0100386#dhcp-option=vendor:PXEClient,1,0.0.0.0
387
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000388# Send microsoft-specific option to tell windows to release the DHCP lease
389# when it shuts down. Note the "i" flag, to tell dnsmasq to send the
390# value as a four-byte integer - that's what microsoft wants. See
391# http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
392#dhcp-option=vendor:MSFT,2,1i
393
Simon Kelley6b010842007-02-12 20:32:07 +0000394# Send the Encapsulated-vendor-class ID needed by some configurations of
395# Etherboot to allow is to recognise the DHCP server.
396#dhcp-option=vendor:Etherboot,60,"Etherboot"
397
398# Send options to PXELinux. Note that we need to send the options even
399# though they don't appear in the parameter request list, so we need
Simon Kelley28866e92011-02-14 20:19:14 +0000400# to use dhcp-option-force here.
Simon Kelley6b010842007-02-12 20:32:07 +0000401# See http://syslinux.zytor.com/pxe.php#special for details.
402# Magic number - needed before anything else is recognised
403#dhcp-option-force=208,f1:00:74:7e
404# Configuration file name
405#dhcp-option-force=209,configs/common
406# Path prefix
407#dhcp-option-force=210,/tftpboot/pxelinux/files/
408# Reboot time. (Note 'i' to send 32-bit value)
409#dhcp-option-force=211,30i
410
Simon Kelley28866e92011-02-14 20:19:14 +0000411# Set the boot filename for netboot/PXE. You will only need
Simon Kelley832af0b2007-01-21 20:01:28 +0000412# this is you want to boot machines over the network and you will need
413# a TFTP server; either dnsmasq's built in TFTP server or an
414# external one. (See below for how to enable the TFTP server.)
415#dhcp-boot=pxelinux.0
416
Simon Kelley7de060b2011-08-26 17:24:52 +0100417# The same as above, but use custom tftp-server instead machine running dnsmasq
418#dhcp-boot=pxelinux,server.name,192.168.1.100
419
Simon Kelley824af852008-02-12 20:43:05 +0000420# Boot for Etherboot gPXE. The idea is to send two different
421# filenames, the first loads gPXE, and the second tells gPXE what to
422# load. The dhcp-match sets the gpxe tag for requests from gPXE.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100423#dhcp-match=set:gpxe,175 # gPXE sends a 175 option.
424#dhcp-boot=tag:!gpxe,undionly.kpxe
Simon Kelley824af852008-02-12 20:43:05 +0000425#dhcp-boot=mybootimage
Simon Kelley28866e92011-02-14 20:19:14 +0000426
Simon Kelley73a08a22009-02-05 20:28:08 +0000427# Encapsulated options for Etherboot gPXE. All the options are
428# encapsulated within option 175
429#dhcp-option=encap:175, 1, 5b # priority code
Simon Kelley28866e92011-02-14 20:19:14 +0000430#dhcp-option=encap:175, 176, 1b # no-proxydhcp
431#dhcp-option=encap:175, 177, string # bus-id
Simon Kelley73a08a22009-02-05 20:28:08 +0000432#dhcp-option=encap:175, 189, 1b # BIOS drive code
433#dhcp-option=encap:175, 190, user # iSCSI username
434#dhcp-option=encap:175, 191, pass # iSCSI password
435
436# Test for the architecture of a netboot client. PXE clients are
437# supposed to send their architecture as option 93. (See RFC 4578)
438#dhcp-match=peecees, option:client-arch, 0 #x86-32
439#dhcp-match=itanics, option:client-arch, 2 #IA64
440#dhcp-match=hammers, option:client-arch, 6 #x86-64
Simon Kelley28866e92011-02-14 20:19:14 +0000441#dhcp-match=mactels, option:client-arch, 7 #EFI x86-64
Simon Kelley73a08a22009-02-05 20:28:08 +0000442
Simon Kelley7622fc02009-06-04 20:32:05 +0100443# Do real PXE, rather than just booting a single file, this is an
444# alternative to dhcp-boot.
445#pxe-prompt="What system shall I netboot?"
446# or with timeout before first available action is taken:
447#pxe-prompt="Press F8 for menu.", 60
448
449# Available boot services. for PXE.
Simon Kelley316e2732010-01-22 20:16:09 +0000450#pxe-service=x86PC, "Boot from local disk"
Simon Kelley7622fc02009-06-04 20:32:05 +0100451
452# Loads <tftp-root>/pxelinux.0 from dnsmasq TFTP server.
Simon Kelley28866e92011-02-14 20:19:14 +0000453#pxe-service=x86PC, "Install Linux", pxelinux
Simon Kelley7622fc02009-06-04 20:32:05 +0100454
455# Loads <tftp-root>/pxelinux.0 from TFTP server at 1.2.3.4.
456# Beware this fails on old PXE ROMS.
Simon Kelley28866e92011-02-14 20:19:14 +0000457#pxe-service=x86PC, "Install Linux", pxelinux, 1.2.3.4
Simon Kelley7622fc02009-06-04 20:32:05 +0100458
459# Use bootserver on network, found my multicast or broadcast.
460#pxe-service=x86PC, "Install windows from RIS server", 1
461
462# Use bootserver at a known IP address.
463#pxe-service=x86PC, "Install windows from RIS server", 1, 1.2.3.4
464
465# If you have multicast-FTP available,
466# information for that can be passed in a similar way using options 1
467# to 5. See page 19 of
Simon Kelley28866e92011-02-14 20:19:14 +0000468# http://download.intel.com/design/archives/wfm/downloads/pxespec.pdf
Simon Kelley7622fc02009-06-04 20:32:05 +0100469
Simon Kelley28866e92011-02-14 20:19:14 +0000470
Simon Kelley832af0b2007-01-21 20:01:28 +0000471# Enable dnsmasq's built-in TFTP server
472#enable-tftp
473
Simon Kelley28866e92011-02-14 20:19:14 +0000474# Set the root directory for files available via FTP.
Simon Kelley832af0b2007-01-21 20:01:28 +0000475#tftp-root=/var/ftpd
476
477# Make the TFTP server more secure: with this set, only files owned by
478# the user dnsmasq is running as will be send over the net.
479#tftp-secure
480
Simon Kelley28866e92011-02-14 20:19:14 +0000481# This option stops dnsmasq from negotiating a larger blocksize for TFTP
Simon Kelley1f15b812009-10-13 17:49:32 +0100482# transfers. It will slow things down, but may rescue some broken TFTP
483# clients.
484#tftp-no-blocksize
485
Simon Kelley832af0b2007-01-21 20:01:28 +0000486# Set the boot file name only when the "red" tag is set.
Simon Kelleycf568a32012-10-09 20:51:31 +0100487#dhcp-boot=tag:red,pxelinux.red-net
Simon Kelley832af0b2007-01-21 20:01:28 +0000488
Simon Kelley7622fc02009-06-04 20:32:05 +0100489# An example of dhcp-boot with an external TFTP server: the name and IP
Simon Kelley832af0b2007-01-21 20:01:28 +0000490# address of the server are given after the filename.
Simon Kelley7622fc02009-06-04 20:32:05 +0100491# Can fail with old PXE ROMS. Overridden by --pxe-service.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000492#dhcp-boot=/var/ftpd/pxelinux.0,boothost,192.168.0.3
493
Simon Kelley7de060b2011-08-26 17:24:52 +0100494# If there are multiple external tftp servers having a same name
495# (using /etc/hosts) then that name can be specified as the
496# tftp_servername (the third option to dhcp-boot) and in that
497# case dnsmasq resolves this name and returns the resultant IP
498# addresses in round robin fasion. This facility can be used to
499# load balance the tftp load among a set of servers.
500#dhcp-boot=/var/ftpd/pxelinux.0,boothost,tftp_server_name
501
Simon Kelley44a2a312004-03-10 20:04:35 +0000502# Set the limit on DHCP leases, the default is 150
503#dhcp-lease-max=150
504
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000505# The DHCP server needs somewhere on disk to keep its lease database.
506# This defaults to a sane location, but if you want to change it, use
507# the line below.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000508#dhcp-leasefile=/var/lib/misc/dnsmasq.leases
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000509
Simon Kelleyb8187c82005-11-26 21:46:27 +0000510# Set the DHCP server to authoritative mode. In this mode it will barge in
511# and take over the lease for any client which broadcasts on the network,
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100512# whether it has a record of the lease or not. This avoids long timeouts
Simon Kelleyb8187c82005-11-26 21:46:27 +0000513# when a machine wakes up on a new network. DO NOT enable this if there's
Simon Kelley28866e92011-02-14 20:19:14 +0000514# the slightest chance that you might end up accidentally configuring a DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +0100515# server for your campus/company accidentally. The ISC server uses
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100516# the same option, and this URL provides more information:
Simon Kelley28866e92011-02-14 20:19:14 +0000517# http://www.isc.org/files/auth.html
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100518#dhcp-authoritative
519
Simon Kelley7cebd202006-05-06 14:13:33 +0100520# Run an executable when a DHCP lease is created or destroyed.
Simon Kelley28866e92011-02-14 20:19:14 +0000521# The arguments sent to the script are "add" or "del",
Simon Kelley7cebd202006-05-06 14:13:33 +0100522# then the MAC address, the IP address and finally the hostname
Simon Kelley28866e92011-02-14 20:19:14 +0000523# if there is one.
Simon Kelley7cebd202006-05-06 14:13:33 +0100524#dhcp-script=/bin/echo
525
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000526# Set the cachesize here.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000527#cache-size=150
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000528
529# If you want to disable negative caching, uncomment this.
530#no-negcache
531
Simon Kelleybe0f45c2012-07-16 13:35:25 +0100532# Normally responses which come from /etc/hosts and the DHCP lease
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000533# file have Time-To-Live set as zero, which conventionally means
Simon Kelleyb8187c82005-11-26 21:46:27 +0000534# do not cache further. If you are happy to trade lower load on the
535# server for potentially stale date, you can set a time-to-live (in
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000536# seconds) here.
537#local-ttl=
538
539# If you want dnsmasq to detect attempts by Verisign to send queries
540# to unregistered .com and .net hosts to its sitefinder service and
541# have dnsmasq instead return the correct NXDOMAIN response, uncomment
542# this line. You can add similar lines to do the same for other
543# registries which have implemented wildcard A records.
544#bogus-nxdomain=64.94.110.11
545
Simon Kelley1cff1662004-03-12 08:12:58 +0000546# If you want to fix up DNS results from upstream servers, use the
547# alias option. This only works for IPv4.
548# This alias makes a result of 1.2.3.4 appear as 5.6.7.8
549#alias=1.2.3.4,5.6.7.8
550# and this maps 1.2.3.x to 5.6.7.x
551#alias=1.2.3.0,5.6.7.0,255.255.255.0
Simon Kelley73a08a22009-02-05 20:28:08 +0000552# and this maps 192.168.0.10->192.168.0.40 to 10.0.0.10->10.0.0.40
553#alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000554
555# Change these lines if you want dnsmasq to serve MX records.
556
557# Return an MX record named "maildomain.com" with target
558# servermachine.com and preference 50
559#mx-host=maildomain.com,servermachine.com,50
560
561# Set the default target for MX records created using the localmx option.
562#mx-target=servermachine.com
563
564# Return an MX record pointing to the mx-target for all local
565# machines.
566#localmx
567
568# Return an MX record pointing to itself for all local machines.
569#selfmx
570
Simon Kelleyb8187c82005-11-26 21:46:27 +0000571# Change the following lines if you want dnsmasq to serve SRV
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000572# records. These are useful if you want to serve ldap requests for
573# Active Directory and other windows-originated DNS requests.
574# See RFC 2782.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000575# You may add multiple srv-host lines.
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000576# The fields are <name>,<target>,<port>,<priority>,<weight>
577# If the domain part if missing from the name (so that is just has the
578# service and protocol sections) then the domain given by the domain=
Simon Kelley0a852542005-03-23 20:28:59 +0000579# config option is used. (Note that expand-hosts does not need to be
580# set for this to work.)
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000581
582# A SRV record sending LDAP for the example.com domain to
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100583# ldapserver.example.com port 389
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000584#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389
585
586# A SRV record sending LDAP for the example.com domain to
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100587# ldapserver.example.com port 389 (using domain=)
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000588#domain=example.com
589#srv-host=_ldap._tcp,ldapserver.example.com,389
590
591# Two SRV records for LDAP, each with different priorities
592#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,1
593#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,2
594
595# A SRV record indicating that there is no LDAP server for the domain
Simon Kelleyb8187c82005-11-26 21:46:27 +0000596# example.com
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000597#srv-host=_ldap._tcp.example.com
598
Simon Kelley832af0b2007-01-21 20:01:28 +0000599# The following line shows how to make dnsmasq serve an arbitrary PTR
600# record. This is useful for DNS-SD. (Note that the
601# domain-name expansion done for SRV records _does_not
602# occur for PTR records.)
603#ptr-record=_http._tcp.dns-sd-services,"New Employee Page._http._tcp.dns-sd-services"
Simon Kelley0a852542005-03-23 20:28:59 +0000604
605# Change the following lines to enable dnsmasq to serve TXT records.
606# These are used for things like SPF and zeroconf. (Note that the
Simon Kelleyb8187c82005-11-26 21:46:27 +0000607# domain-name expansion done for SRV records _does_not
Simon Kelley0a852542005-03-23 20:28:59 +0000608# occur for TXT records.)
609
610#Example SPF.
Simon Kelley832af0b2007-01-21 20:01:28 +0000611#txt-record=example.com,"v=spf1 a -all"
Simon Kelley0a852542005-03-23 20:28:59 +0000612
613#Example zeroconf
614#txt-record=_http._tcp.example.com,name=value,paper=A4
615
Simon Kelley9009d742008-11-14 20:04:27 +0000616# Provide an alias for a "local" DNS name. Note that this _only_ works
617# for targets which are names from DHCP or /etc/hosts. Give host
618# "bert" another name, bertrand
619#cname=bertand,bert
Simon Kelley0a852542005-03-23 20:28:59 +0000620
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000621# For debugging purposes, log each DNS query as it passes through
622# dnsmasq.
623#log-queries
624
Simon Kelleyf2621c72007-04-29 19:47:21 +0100625# Log lots of extra information about DHCP transactions.
626#log-dhcp
627
Simon Kelleycf568a32012-10-09 20:51:31 +0100628# Include another lot of configuration options.
Simon Kelley33820b72004-04-03 21:10:00 +0100629#conf-file=/etc/dnsmasq.more.conf
Simon Kelley16972692006-10-16 20:04:18 +0100630#conf-dir=/etc/dnsmasq.d