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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
Simon Kelley854cf262014-02-06 12:07:10 +000023# Uncomment these to enable DNSSEC validation and caching:
24# (Requires dnsmasq to be built with DNSSEC option.)
25#conf-file=%%PREFIX%%/share/dnsmasq/trust-anchors.conf
26#dnssec
Simon Kelley9e4abcb2004-01-22 19:47:41 +000027
Simon Kelley56618c32014-03-24 21:13:49 +000028# Replies which are not DNSSEC signed may be legitimate, because the domain
29# is unsigned, or may be forgeries. Setting this option tells dnsmasq to
30# check that an unsigned reply is OK, by finding a secure proof that a DS
31# record somewhere between the root and the domain does not exist.
32# The cost of setting this is that even queries in unsigned domains will need
33# one or more extra DNS queries to verify.
34#dnssec-check-unsigned
35
Simon Kelleyc1bb8502004-08-11 18:40:17 +010036# Uncomment this to filter useless windows-originated DNS requests
37# which can trigger dial-on-demand links needlessly.
Simon Kelleyb8187c82005-11-26 21:46:27 +000038# Note that (amongst other things) this blocks all SRV requests,
Simon Kelley824af852008-02-12 20:43:05 +000039# so don't use it if you use eg Kerberos, SIP, XMMP or Google-talk.
Simon Kelleyf6b7dc42005-01-23 12:06:08 +000040# This option only affects forwarding, SRV records originating for
41# dnsmasq (via srv-host= lines) are not suppressed by it.
Simon Kelleyc1bb8502004-08-11 18:40:17 +010042#filterwin2k
43
Simon Kelley9e4abcb2004-01-22 19:47:41 +000044# Change this line if you want dns to get its upstream servers from
Simon Kelleyb8187c82005-11-26 21:46:27 +000045# somewhere other that /etc/resolv.conf
Simon Kelley9e4abcb2004-01-22 19:47:41 +000046#resolv-file=
47
Simon Kelley1ab84e22004-01-29 16:48:35 +000048# By default, dnsmasq will send queries to any of the upstream
49# servers it knows about and tries to favour servers to are known
50# to be up. Uncommenting this forces dnsmasq to try each query
51# with each server strictly in the order they appear in
52# /etc/resolv.conf
53#strict-order
54
Simon Kelley9e4abcb2004-01-22 19:47:41 +000055# If you don't want dnsmasq to read /etc/resolv.conf or any other
Simon Kelleyb8187c82005-11-26 21:46:27 +000056# file, getting its servers from this file instead (see below), then
Simon Kelley832af0b2007-01-21 20:01:28 +000057# uncomment this.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000058#no-resolv
59
60# If you don't want dnsmasq to poll /etc/resolv.conf or other resolv
61# files for changes and re-read them then uncomment this.
62#no-poll
63
Simon Kelleyb8187c82005-11-26 21:46:27 +000064# Add other name servers here, with domain specs if they are for
Simon Kelley9e4abcb2004-01-22 19:47:41 +000065# non-public domains.
66#server=/localnet/192.168.0.1
67
Simon Kelley28866e92011-02-14 20:19:14 +000068# Example of routing PTR queries to nameservers: this will send all
Simon Kelleyf2621c72007-04-29 19:47:21 +010069# address->name queries for 192.168.3/24 to nameserver 10.1.2.3
70#server=/3.168.192.in-addr.arpa/10.1.2.3
71
Simon Kelley9e4abcb2004-01-22 19:47:41 +000072# Add local-only domains here, queries in these domains are answered
73# from /etc/hosts or DHCP only.
74#local=/localnet/
75
76# Add domains which you want to force to an IP address here.
Simon Kelley28866e92011-02-14 20:19:14 +000077# The example below send any host in double-click.net to a local
78# web-server.
79#address=/double-click.net/127.0.0.1
Simon Kelley9e4abcb2004-01-22 19:47:41 +000080
Simon Kelley824af852008-02-12 20:43:05 +000081# --address (and --server) work with IPv6 addresses too.
82#address=/www.thekelleys.org.uk/fe80::20d:60ff:fe36:f83
83
Jason A. Donenfeld13d86c72013-02-22 18:20:53 +000084# Add the IPs of all queries to yahoo.com, google.com, and their
85# subdomains to the vpn and search ipsets:
86#ipset=/yahoo.com/google.com/vpn,search
87
Simon Kelley28866e92011-02-14 20:19:14 +000088# You can control how dnsmasq talks to a server: this forces
Simon Kelley824af852008-02-12 20:43:05 +000089# queries to 10.1.2.3 to be routed via eth1
Simon Kelley8ef5ada2010-06-03 19:42:45 +010090# server=10.1.2.3@eth1
Simon Kelley824af852008-02-12 20:43:05 +000091
92# and this sets the source (ie local) address used to talk to
93# 10.1.2.3 to 192.168.1.1 port 55 (there must be a interface with that
94# IP on the machine, obviously).
Simon Kelley8ef5ada2010-06-03 19:42:45 +010095# server=10.1.2.3@192.168.1.1#55
Simon Kelley824af852008-02-12 20:43:05 +000096
Simon Kelleyf6b7dc42005-01-23 12:06:08 +000097# If you want dnsmasq to change uid and gid to something other
98# than the default, edit the following lines.
Simon Kelley9e4abcb2004-01-22 19:47:41 +000099#user=
100#group=
101
Simon Kelleyb8187c82005-11-26 21:46:27 +0000102# If you want dnsmasq to listen for DHCP and DNS requests only on
103# specified interfaces (and the loopback) give the name of the
104# interface (eg eth0) here.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000105# Repeat the line for more than one interface.
106#interface=
107# Or you can specify which interface _not_ to listen on
108#except-interface=
109# Or which to listen on by address (remember to include 127.0.0.1 if
110# you use this.)
111#listen-address=
Simon Kelley3d8df262005-08-29 12:19:27 +0100112# If you want dnsmasq to provide only DNS service on an interface,
113# configure it as shown above, and then use the following line to
Simon Kelley28866e92011-02-14 20:19:14 +0000114# disable DHCP and TFTP on it.
Simon Kelley3d8df262005-08-29 12:19:27 +0100115#no-dhcp-interface=
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000116
Simon Kelley44a2a312004-03-10 20:04:35 +0000117# On systems which support it, dnsmasq binds the wildcard address,
118# even when it is listening on only some interfaces. It then discards
Simon Kelleyb8187c82005-11-26 21:46:27 +0000119# requests that it shouldn't reply to. This has the advantage of
Simon Kelley44a2a312004-03-10 20:04:35 +0000120# working even when interfaces come and go and change address. If you
121# want dnsmasq to really bind only the interfaces it is listening on,
Simon Kelleyb8187c82005-11-26 21:46:27 +0000122# uncomment this option. About the only time you may need this is when
Simon Kelley44a2a312004-03-10 20:04:35 +0000123# running another nameserver on the same machine.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000124#bind-interfaces
Simon Kelley44a2a312004-03-10 20:04:35 +0000125
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000126# If you don't want dnsmasq to read /etc/hosts, uncomment the
127# following line.
128#no-hosts
129# or if you want it to read another file, as well as /etc/hosts, use
130# this.
131#addn-hosts=/etc/banner_add_hosts
132
133# Set this (and domain: see below) if you want to have a domain
134# automatically added to simple names in a hosts-file.
135#expand-hosts
136
Simon Kelley44a2a312004-03-10 20:04:35 +0000137# Set the domain for dnsmasq. this is optional, but if it is set, it
138# does the following things.
139# 1) Allows DHCP hosts to have fully qualified domain names, as long
140# as the domain part matches this setting.
141# 2) Sets the "domain" DHCP option thereby potentially setting the
142# domain of all systems configured by DHCP
143# 3) Provides the domain part for "expand-hosts"
144#domain=thekelleys.org.uk
Simon Kelleyb8187c82005-11-26 21:46:27 +0000145
Simon Kelley9009d742008-11-14 20:04:27 +0000146# Set a different domain for a particular subnet
147#domain=wireless.thekelleys.org.uk,192.168.2.0/24
148
149# Same idea, but range rather then subnet
150#domain=reserved.thekelleys.org.uk,192.68.3.100,192.168.3.200
151
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000152# Uncomment this to enable the integrated DHCP server, you need
Simon Kelleyb8187c82005-11-26 21:46:27 +0000153# to supply the range of addresses available for lease and optionally
Simon Kelley44a2a312004-03-10 20:04:35 +0000154# a lease time. If you have more than one network, you will need to
155# repeat this for each network on which you want to supply DHCP
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000156# service.
157#dhcp-range=192.168.0.50,192.168.0.150,12h
158
Simon Kelley44a2a312004-03-10 20:04:35 +0000159# This is an example of a DHCP range where the netmask is given. This
Simon Kelleyb8187c82005-11-26 21:46:27 +0000160# is needed for networks we reach the dnsmasq DHCP server via a relay
Simon Kelley44a2a312004-03-10 20:04:35 +0000161# agent. If you don't know what a DHCP relay agent is, you probably
162# don't need to worry about this.
163#dhcp-range=192.168.0.50,192.168.0.150,255.255.255.0,12h
164
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100165# This is an example of a DHCP range which sets a tag, so that
Simon Kelley44a2a312004-03-10 20:04:35 +0000166# some DHCP options may be set only for this network.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100167#dhcp-range=set:red,192.168.0.50,192.168.0.150
Simon Kelley44a2a312004-03-10 20:04:35 +0000168
Simon Kelley28866e92011-02-14 20:19:14 +0000169# Use this DHCP range only when the tag "green" is set.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100170#dhcp-range=tag:green,192.168.0.50,192.168.0.150,12h
171
172# Specify a subnet which can't be used for dynamic address allocation,
173# is available for hosts with matching --dhcp-host lines. Note that
174# dhcp-host declarations will be ignored unless there is a dhcp-range
175# of some type for the subnet in question.
176# In this case the netmask is implied (it comes from the network
Simon Kelley28866e92011-02-14 20:19:14 +0000177# configuration on the machine running dnsmasq) it is possible to give
178# an explicit netmask instead.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100179#dhcp-range=192.168.0.0,static
Simon Kelley28866e92011-02-14 20:19:14 +0000180
Simon Kelley843c96b2012-02-27 17:42:38 +0000181# Enable DHCPv6. Note that the prefix-length does not need to be specified
182# and defaults to 64 if missing/
183#dhcp-range=1234::2, 1234::500, 64, 12h
184
Simon Kelley0010b472012-02-29 12:18:30 +0000185# Do Router Advertisements, BUT NOT DHCP for this subnet.
Simon Kelley843c96b2012-02-27 17:42:38 +0000186#dhcp-range=1234::, ra-only
187
Simon Kelley7023e382012-03-09 12:05:49 +0000188# Do Router Advertisements, BUT NOT DHCP for this subnet, also try and
189# add names to the DNS for the IPv6 address of SLAAC-configured dual-stack
190# hosts. Use the DHCPv4 lease to derive the name, network segment and
191# MAC address and assume that the host will also have an
192# IPv6 address calculated using the SLAAC alogrithm.
Simon Kelley7023e382012-03-09 12:05:49 +0000193#dhcp-range=1234::, ra-names
194
Simon Kelley0010b472012-02-29 12:18:30 +0000195# Do Router Advertisements, BUT NOT DHCP for this subnet.
196# Set the lifetime to 46 hours. (Note: minimum lifetime is 2 hours.)
197#dhcp-range=1234::, ra-only, 48h
198
Simon Kelleye8ca69e2012-03-26 21:23:26 +0100199# Do DHCP and Router Advertisements for this subnet. Set the A bit in the RA
200# so that clients can use SLAAC addresses as well as DHCP ones.
201#dhcp-range=1234::2, 1234::500, slaac
202
203# Do Router Advertisements and stateless DHCP for this subnet. Clients will
204# not get addresses from DHCP, but they will get other configuration information.
205# They will use SLAAC for addresses.
206#dhcp-range=1234::, ra-stateless
207
208# Do stateless DHCP, SLAAC, and generate DNS names for SLAAC addresses
209# from DHCPv4 leases.
210#dhcp-range=1234::, ra-stateless, ra-names
211
212# Do router advertisements for all subnets where we're doing DHCPv6
213# Unless overriden by ra-stateless, ra-names, et al, the router
214# advertisements will have the M and O bits set, so that the clients
215# get addresses and configuration from DHCPv6, and the A bit reset, so the
216# clients don't use SLAAC addresses.
217#enable-ra
218
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000219# Supply parameters for specified hosts using DHCP. There are lots
Simon Kelley1ab84e22004-01-29 16:48:35 +0000220# of valid alternatives, so we will give examples of each. Note that
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000221# IP addresses DO NOT have to be in the range given above, they just
Simon Kelley1ab84e22004-01-29 16:48:35 +0000222# need to be on the same network. The order of the parameters in these
Simon Kelley572b41e2011-02-18 18:11:18 +0000223# do not matter, it's permissible to give name, address and MAC in any
224# order.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000225
Simon Kelley28866e92011-02-14 20:19:14 +0000226# Always allocate the host with Ethernet address 11:22:33:44:55:66
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000227# The IP address 192.168.0.60
228#dhcp-host=11:22:33:44:55:66,192.168.0.60
229
230# Always set the name of the host with hardware address
231# 11:22:33:44:55:66 to be "fred"
232#dhcp-host=11:22:33:44:55:66,fred
233
Simon Kelley28866e92011-02-14 20:19:14 +0000234# Always give the host with Ethernet address 11:22:33:44:55:66
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000235# the name fred and IP address 192.168.0.60 and lease time 45 minutes
236#dhcp-host=11:22:33:44:55:66,fred,192.168.0.60,45m
237
Simon Kelley28866e92011-02-14 20:19:14 +0000238# Give a host with Ethernet address 11:22:33:44:55:66 or
Simon Kelley9009d742008-11-14 20:04:27 +0000239# 12:34:56:78:90:12 the IP address 192.168.0.60. Dnsmasq will assume
Simon Kelley28866e92011-02-14 20:19:14 +0000240# that these two Ethernet interfaces will never be in use at the same
Simon Kelley9009d742008-11-14 20:04:27 +0000241# time, and give the IP address to the second, even if it is already
242# in use by the first. Useful for laptops with wired and wireless
243# addresses.
244#dhcp-host=11:22:33:44:55:66,12:34:56:78:90:12,192.168.0.60
245
Simon Kelley824af852008-02-12 20:43:05 +0000246# Give the machine which says its name is "bert" IP address
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000247# 192.168.0.70 and an infinite lease
248#dhcp-host=bert,192.168.0.70,infinite
249
Simon Kelleyb8187c82005-11-26 21:46:27 +0000250# Always give the host with client identifier 01:02:02:04
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000251# the IP address 192.168.0.60
252#dhcp-host=id:01:02:02:04,192.168.0.60
253
John Hanks46c89f22015-05-26 22:07:57 +0100254# Always give the Infiniband interface with hardware address
255# 80:00:00:48:fe:80:00:00:00:00:00:00:f4:52:14:03:00:28:05:81 the
256# ip address 192.168.0.61. The client id is derived from the prefix
257# ff:00:00:00:00:00:02:00:00:02:c9:00 and the last 8 pairs of
258# hex digits of the hardware address.
259#dhcp-host=id:ff:00:00:00:00:00:02:00:00:02:c9:00:f4:52:14:03:00:28:05:81,192.168.0.61
260
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000261# Always give the host with client identifier "marjorie"
262# the IP address 192.168.0.60
263#dhcp-host=id:marjorie,192.168.0.60
264
Simon Kelley1ab84e22004-01-29 16:48:35 +0000265# Enable the address given for "judge" in /etc/hosts
266# to be given to a machine presenting the name "judge" when
267# it asks for a DHCP lease.
268#dhcp-host=judge
269
Simon Kelley28866e92011-02-14 20:19:14 +0000270# Never offer DHCP service to a machine whose Ethernet
Simon Kelley33820b72004-04-03 21:10:00 +0100271# address is 11:22:33:44:55:66
272#dhcp-host=11:22:33:44:55:66,ignore
273
Simon Kelley28866e92011-02-14 20:19:14 +0000274# Ignore any client-id presented by the machine with Ethernet
Simon Kelleyb8187c82005-11-26 21:46:27 +0000275# address 11:22:33:44:55:66. This is useful to prevent a machine
Simon Kelleya84fa1d2004-04-23 22:21:21 +0100276# being treated differently when running under different OS's or
277# between PXE boot and OS boot.
278#dhcp-host=11:22:33:44:55:66,id:*
279
Simon Kelleyb8187c82005-11-26 21:46:27 +0000280# Send extra options which are tagged as "red" to
Simon Kelley28866e92011-02-14 20:19:14 +0000281# the machine with Ethernet address 11:22:33:44:55:66
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100282#dhcp-host=11:22:33:44:55:66,set:red
Simon Kelley33820b72004-04-03 21:10:00 +0100283
Simon Kelleyb8187c82005-11-26 21:46:27 +0000284# Send extra options which are tagged as "red" to
Simon Kelley28866e92011-02-14 20:19:14 +0000285# any machine with Ethernet address starting 11:22:33:
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100286#dhcp-host=11:22:33:*:*:*,set:red
Simon Kelley0a852542005-03-23 20:28:59 +0000287
Simon Kelley843c96b2012-02-27 17:42:38 +0000288# Give a fixed IPv6 address and name to client with
289# DUID 00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2
290# Note the MAC addresses CANNOT be used to identify DHCPv6 clients.
291# Note also the they [] around the IPv6 address are obilgatory.
292#dhcp-host=id:00:01:00:01:16:d2:83:fc:92:d4:19:e2:d8:b2, fred, [1234::5]
293
Simon Kelley3862deb2012-01-06 20:16:07 +0000294# Ignore any clients which are not specified in dhcp-host lines
Simon Kelley28866e92011-02-14 20:19:14 +0000295# or /etc/ethers. Equivalent to ISC "deny unknown-clients".
296# This relies on the special "known" tag which is set when
Simon Kelley5aabfc72007-08-29 11:24:47 +0100297# a host is matched.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100298#dhcp-ignore=tag:!known
Simon Kelley5aabfc72007-08-29 11:24:47 +0100299
Simon Kelleya2226412004-05-13 20:27:08 +0100300# Send extra options which are tagged as "red" to any machine whose
301# DHCP vendorclass string includes the substring "Linux"
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100302#dhcp-vendorclass=set:red,Linux
Simon Kelleya2226412004-05-13 20:27:08 +0100303
Simon Kelleyb8187c82005-11-26 21:46:27 +0000304# Send extra options which are tagged as "red" to any machine one
Simon Kelleya2226412004-05-13 20:27:08 +0100305# of whose DHCP userclass strings includes the substring "accounts"
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100306#dhcp-userclass=set:red,accounts
Simon Kelleya2226412004-05-13 20:27:08 +0100307
Simon Kelleycdeda282006-03-16 20:16:06 +0000308# Send extra options which are tagged as "red" to any machine whose
309# MAC address matches the pattern.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100310#dhcp-mac=set:red,00:60:8C:*:*:*
Simon Kelleycdeda282006-03-16 20:16:06 +0000311
Simon Kelley44a2a312004-03-10 20:04:35 +0000312# If this line is uncommented, dnsmasq will read /etc/ethers and act
313# on the ethernet-address/IP pairs found there just as if they had
314# been given as --dhcp-host options. Useful if you keep
315# MAC-address/host mappings there for other purposes.
316#read-ethers
317
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000318# Send options to hosts which ask for a DHCP lease.
319# See RFC 2132 for details of available options.
Simon Kelley28866e92011-02-14 20:19:14 +0000320# Common options can be given to dnsmasq by name:
Simon Kelleyf2621c72007-04-29 19:47:21 +0100321# run "dnsmasq --help dhcp" to get a list.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000322# Note that all the common settings, such as netmask and
323# broadcast address, DNS server and default route, are given
Simon Kelley28866e92011-02-14 20:19:14 +0000324# sane defaults by dnsmasq. You very likely will not need
Simon Kelley1ab84e22004-01-29 16:48:35 +0000325# any dhcp-options. If you use Windows clients and Samba, there
326# are some options which are recommended, they are detailed at the
327# end of this section.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000328
Simon Kelleycdeda282006-03-16 20:16:06 +0000329# Override the default route supplied by dnsmasq, which assumes the
330# router is the same machine as the one running dnsmasq.
331#dhcp-option=3,1.2.3.4
332
Simon Kelleyf2621c72007-04-29 19:47:21 +0100333# Do the same thing, but using the option name
334#dhcp-option=option:router,1.2.3.4
335
Simon Kelley832af0b2007-01-21 20:01:28 +0000336# Override the default route supplied by dnsmasq and send no default
337# route at all. Note that this only works for the options sent by
Simon Kelley28866e92011-02-14 20:19:14 +0000338# default (1, 3, 6, 12, 28) the same line will send a zero-length option
Simon Kelley832af0b2007-01-21 20:01:28 +0000339# for all other option numbers.
340#dhcp-option=3
341
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000342# Set the NTP time server addresses to 192.168.0.4 and 10.10.0.5
Simon Kelleyf2621c72007-04-29 19:47:21 +0100343#dhcp-option=option:ntp-server,192.168.0.4,10.10.0.5
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000344
Simon Kelley843c96b2012-02-27 17:42:38 +0000345# Send DHCPv6 option. Note [] around IPv6 addresses.
Simon Kelley0010b472012-02-29 12:18:30 +0000346#dhcp-option=option6:dns-server,[1234::77],[1234::88]
347
348# Send DHCPv6 option for namservers as the machine running
349# dnsmasq and another.
350#dhcp-option=option6:dns-server,[::],[1234::88]
Simon Kelley843c96b2012-02-27 17:42:38 +0000351
Simon Kelley23245c02012-07-18 16:21:11 +0100352# Ask client to poll for option changes every six hours. (RFC4242)
353#dhcp-option=option6:information-refresh-time,6h
354
Simon Kelleyb8187c82005-11-26 21:46:27 +0000355# Set the NTP time server address to be the same machine as
Simon Kelley1ab84e22004-01-29 16:48:35 +0000356# is running dnsmasq
357#dhcp-option=42,0.0.0.0
358
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000359# Set the NIS domain name to "welly"
360#dhcp-option=40,welly
361
Simon Kelley1ab84e22004-01-29 16:48:35 +0000362# Set the default time-to-live to 50
363#dhcp-option=23,50
364
365# Set the "all subnets are local" flag
366#dhcp-option=27,1
367
Simon Kelley33820b72004-04-03 21:10:00 +0100368# Send the etherboot magic flag and then etherboot options (a string).
369#dhcp-option=128,e4:45:74:68:00:00
370#dhcp-option=129,NIC=eepro100
371
Simon Kelleyb8187c82005-11-26 21:46:27 +0000372# Specify an option which will only be sent to the "red" network
Simon Kelley44a2a312004-03-10 20:04:35 +0000373# (see dhcp-range for the declaration of the "red" network)
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100374# Note that the tag: part must precede the option: part.
375#dhcp-option = tag:red, option:ntp-server, 192.168.1.1
Simon Kelley44a2a312004-03-10 20:04:35 +0000376
Simon Kelley1ab84e22004-01-29 16:48:35 +0000377# The following DHCP options set up dnsmasq in the same way as is specified
Simon Kelleyb8187c82005-11-26 21:46:27 +0000378# for the ISC dhcpcd in
Simon Kelley1ab84e22004-01-29 16:48:35 +0000379# http://www.samba.org/samba/ftp/docs/textdocs/DHCP-Server-Configuration.txt
380# adapted for a typical dnsmasq installation where the host running
381# dnsmasq is also the host running samba.
Simon Kelley28866e92011-02-14 20:19:14 +0000382# you may want to uncomment some or all of them if you use
Simon Kelley9009d742008-11-14 20:04:27 +0000383# Windows clients and Samba.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000384#dhcp-option=19,0 # option ip-forwarding off
Simon Kelley1ab84e22004-01-29 16:48:35 +0000385#dhcp-option=44,0.0.0.0 # set netbios-over-TCP/IP nameserver(s) aka WINS server(s)
386#dhcp-option=45,0.0.0.0 # netbios datagram distribution server
387#dhcp-option=46,8 # netbios node type
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100388
Simon Kelley03bfcf62012-01-07 14:37:37 +0000389# Send an empty WPAD option. This may be REQUIRED to get windows 7 to behave.
390#dhcp-option=252,"\n"
391
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100392# Send RFC-3397 DNS domain search DHCP option. WARNING: Your DHCP client
393# probably doesn't support this......
Simon Kelleyf2621c72007-04-29 19:47:21 +0100394#dhcp-option=option:domain-search,eng.apple.com,marketing.apple.com
Simon Kelley1ab84e22004-01-29 16:48:35 +0000395
Simon Kelleycdeda282006-03-16 20:16:06 +0000396# Send RFC-3442 classless static routes (note the netmask encoding)
397#dhcp-option=121,192.168.1.0/24,1.2.3.4,10.0.0.0/8,5.6.7.8
398
Simon Kelley28866e92011-02-14 20:19:14 +0000399# Send vendor-class specific options encapsulated in DHCP option 43.
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000400# The meaning of the options is defined by the vendor-class so
401# options are sent only when the client supplied vendor class
Simon Kelley28866e92011-02-14 20:19:14 +0000402# matches the class given here. (A substring match is OK, so "MSFT"
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000403# matches "MSFT" and "MSFT 5.0"). This example sets the
404# mtftp address to 0.0.0.0 for PXEClients.
Simon Kelley91dccd02005-03-31 17:48:32 +0100405#dhcp-option=vendor:PXEClient,1,0.0.0.0
406
Simon Kelley1b7ecd12007-02-05 14:57:57 +0000407# Send microsoft-specific option to tell windows to release the DHCP lease
408# when it shuts down. Note the "i" flag, to tell dnsmasq to send the
409# value as a four-byte integer - that's what microsoft wants. See
410# http://technet2.microsoft.com/WindowsServer/en/library/a70f1bb7-d2d4-49f0-96d6-4b7414ecfaae1033.mspx?mfr=true
411#dhcp-option=vendor:MSFT,2,1i
412
Simon Kelley6b010842007-02-12 20:32:07 +0000413# Send the Encapsulated-vendor-class ID needed by some configurations of
414# Etherboot to allow is to recognise the DHCP server.
415#dhcp-option=vendor:Etherboot,60,"Etherboot"
416
417# Send options to PXELinux. Note that we need to send the options even
418# though they don't appear in the parameter request list, so we need
Simon Kelley28866e92011-02-14 20:19:14 +0000419# to use dhcp-option-force here.
Simon Kelley6b010842007-02-12 20:32:07 +0000420# See http://syslinux.zytor.com/pxe.php#special for details.
421# Magic number - needed before anything else is recognised
422#dhcp-option-force=208,f1:00:74:7e
423# Configuration file name
424#dhcp-option-force=209,configs/common
425# Path prefix
426#dhcp-option-force=210,/tftpboot/pxelinux/files/
427# Reboot time. (Note 'i' to send 32-bit value)
428#dhcp-option-force=211,30i
429
Simon Kelley28866e92011-02-14 20:19:14 +0000430# Set the boot filename for netboot/PXE. You will only need
Simon Kelley832af0b2007-01-21 20:01:28 +0000431# this is you want to boot machines over the network and you will need
432# a TFTP server; either dnsmasq's built in TFTP server or an
433# external one. (See below for how to enable the TFTP server.)
434#dhcp-boot=pxelinux.0
435
Simon Kelley7de060b2011-08-26 17:24:52 +0100436# The same as above, but use custom tftp-server instead machine running dnsmasq
437#dhcp-boot=pxelinux,server.name,192.168.1.100
438
Simon Kelley824af852008-02-12 20:43:05 +0000439# Boot for Etherboot gPXE. The idea is to send two different
440# filenames, the first loads gPXE, and the second tells gPXE what to
441# load. The dhcp-match sets the gpxe tag for requests from gPXE.
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100442#dhcp-match=set:gpxe,175 # gPXE sends a 175 option.
443#dhcp-boot=tag:!gpxe,undionly.kpxe
Simon Kelley824af852008-02-12 20:43:05 +0000444#dhcp-boot=mybootimage
Simon Kelley28866e92011-02-14 20:19:14 +0000445
Simon Kelley73a08a22009-02-05 20:28:08 +0000446# Encapsulated options for Etherboot gPXE. All the options are
447# encapsulated within option 175
448#dhcp-option=encap:175, 1, 5b # priority code
Simon Kelley28866e92011-02-14 20:19:14 +0000449#dhcp-option=encap:175, 176, 1b # no-proxydhcp
450#dhcp-option=encap:175, 177, string # bus-id
Simon Kelley73a08a22009-02-05 20:28:08 +0000451#dhcp-option=encap:175, 189, 1b # BIOS drive code
452#dhcp-option=encap:175, 190, user # iSCSI username
453#dhcp-option=encap:175, 191, pass # iSCSI password
454
455# Test for the architecture of a netboot client. PXE clients are
456# supposed to send their architecture as option 93. (See RFC 4578)
457#dhcp-match=peecees, option:client-arch, 0 #x86-32
458#dhcp-match=itanics, option:client-arch, 2 #IA64
459#dhcp-match=hammers, option:client-arch, 6 #x86-64
Simon Kelley28866e92011-02-14 20:19:14 +0000460#dhcp-match=mactels, option:client-arch, 7 #EFI x86-64
Simon Kelley73a08a22009-02-05 20:28:08 +0000461
Simon Kelley7622fc02009-06-04 20:32:05 +0100462# Do real PXE, rather than just booting a single file, this is an
463# alternative to dhcp-boot.
464#pxe-prompt="What system shall I netboot?"
465# or with timeout before first available action is taken:
466#pxe-prompt="Press F8 for menu.", 60
467
468# Available boot services. for PXE.
Simon Kelley316e2732010-01-22 20:16:09 +0000469#pxe-service=x86PC, "Boot from local disk"
Simon Kelley7622fc02009-06-04 20:32:05 +0100470
471# Loads <tftp-root>/pxelinux.0 from dnsmasq TFTP server.
Simon Kelley28866e92011-02-14 20:19:14 +0000472#pxe-service=x86PC, "Install Linux", pxelinux
Simon Kelley7622fc02009-06-04 20:32:05 +0100473
474# Loads <tftp-root>/pxelinux.0 from TFTP server at 1.2.3.4.
475# Beware this fails on old PXE ROMS.
Simon Kelley28866e92011-02-14 20:19:14 +0000476#pxe-service=x86PC, "Install Linux", pxelinux, 1.2.3.4
Simon Kelley7622fc02009-06-04 20:32:05 +0100477
478# Use bootserver on network, found my multicast or broadcast.
479#pxe-service=x86PC, "Install windows from RIS server", 1
480
481# Use bootserver at a known IP address.
482#pxe-service=x86PC, "Install windows from RIS server", 1, 1.2.3.4
483
484# If you have multicast-FTP available,
485# information for that can be passed in a similar way using options 1
486# to 5. See page 19 of
Simon Kelley28866e92011-02-14 20:19:14 +0000487# http://download.intel.com/design/archives/wfm/downloads/pxespec.pdf
Simon Kelley7622fc02009-06-04 20:32:05 +0100488
Simon Kelley28866e92011-02-14 20:19:14 +0000489
Simon Kelley832af0b2007-01-21 20:01:28 +0000490# Enable dnsmasq's built-in TFTP server
491#enable-tftp
492
Simon Kelley28866e92011-02-14 20:19:14 +0000493# Set the root directory for files available via FTP.
Simon Kelley832af0b2007-01-21 20:01:28 +0000494#tftp-root=/var/ftpd
495
Stefan Tomanek30d08792015-03-31 22:32:11 +0100496# Do not abort if the tftp-root is unavailable
497#tftp-no-fail
498
Simon Kelley832af0b2007-01-21 20:01:28 +0000499# Make the TFTP server more secure: with this set, only files owned by
500# the user dnsmasq is running as will be send over the net.
501#tftp-secure
502
Simon Kelley28866e92011-02-14 20:19:14 +0000503# This option stops dnsmasq from negotiating a larger blocksize for TFTP
Simon Kelley1f15b812009-10-13 17:49:32 +0100504# transfers. It will slow things down, but may rescue some broken TFTP
505# clients.
506#tftp-no-blocksize
507
Simon Kelley832af0b2007-01-21 20:01:28 +0000508# Set the boot file name only when the "red" tag is set.
Simon Kelleycf568a32012-10-09 20:51:31 +0100509#dhcp-boot=tag:red,pxelinux.red-net
Simon Kelley832af0b2007-01-21 20:01:28 +0000510
Simon Kelley7622fc02009-06-04 20:32:05 +0100511# An example of dhcp-boot with an external TFTP server: the name and IP
Simon Kelley832af0b2007-01-21 20:01:28 +0000512# address of the server are given after the filename.
Simon Kelley7622fc02009-06-04 20:32:05 +0100513# Can fail with old PXE ROMS. Overridden by --pxe-service.
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000514#dhcp-boot=/var/ftpd/pxelinux.0,boothost,192.168.0.3
515
Simon Kelley7de060b2011-08-26 17:24:52 +0100516# If there are multiple external tftp servers having a same name
517# (using /etc/hosts) then that name can be specified as the
518# tftp_servername (the third option to dhcp-boot) and in that
519# case dnsmasq resolves this name and returns the resultant IP
520# addresses in round robin fasion. This facility can be used to
521# load balance the tftp load among a set of servers.
522#dhcp-boot=/var/ftpd/pxelinux.0,boothost,tftp_server_name
523
Simon Kelley44a2a312004-03-10 20:04:35 +0000524# Set the limit on DHCP leases, the default is 150
525#dhcp-lease-max=150
526
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000527# The DHCP server needs somewhere on disk to keep its lease database.
528# This defaults to a sane location, but if you want to change it, use
529# the line below.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000530#dhcp-leasefile=/var/lib/misc/dnsmasq.leases
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000531
Simon Kelleyb8187c82005-11-26 21:46:27 +0000532# Set the DHCP server to authoritative mode. In this mode it will barge in
533# and take over the lease for any client which broadcasts on the network,
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100534# whether it has a record of the lease or not. This avoids long timeouts
Simon Kelleyb8187c82005-11-26 21:46:27 +0000535# when a machine wakes up on a new network. DO NOT enable this if there's
Simon Kelley28866e92011-02-14 20:19:14 +0000536# the slightest chance that you might end up accidentally configuring a DHCP
Simon Kelley5aabfc72007-08-29 11:24:47 +0100537# server for your campus/company accidentally. The ISC server uses
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100538# the same option, and this URL provides more information:
Simon Kelley28866e92011-02-14 20:19:14 +0000539# http://www.isc.org/files/auth.html
Simon Kelleyfd9fa482004-10-21 20:24:00 +0100540#dhcp-authoritative
541
Simon Kelley7cebd202006-05-06 14:13:33 +0100542# Run an executable when a DHCP lease is created or destroyed.
Simon Kelley28866e92011-02-14 20:19:14 +0000543# The arguments sent to the script are "add" or "del",
Simon Kelley7cebd202006-05-06 14:13:33 +0100544# then the MAC address, the IP address and finally the hostname
Simon Kelley28866e92011-02-14 20:19:14 +0000545# if there is one.
Simon Kelley7cebd202006-05-06 14:13:33 +0100546#dhcp-script=/bin/echo
547
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000548# Set the cachesize here.
Simon Kelley1ab84e22004-01-29 16:48:35 +0000549#cache-size=150
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000550
551# If you want to disable negative caching, uncomment this.
552#no-negcache
553
Simon Kelleybe0f45c2012-07-16 13:35:25 +0100554# Normally responses which come from /etc/hosts and the DHCP lease
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000555# file have Time-To-Live set as zero, which conventionally means
Simon Kelleyb8187c82005-11-26 21:46:27 +0000556# do not cache further. If you are happy to trade lower load on the
557# server for potentially stale date, you can set a time-to-live (in
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000558# seconds) here.
559#local-ttl=
560
561# If you want dnsmasq to detect attempts by Verisign to send queries
562# to unregistered .com and .net hosts to its sitefinder service and
563# have dnsmasq instead return the correct NXDOMAIN response, uncomment
564# this line. You can add similar lines to do the same for other
565# registries which have implemented wildcard A records.
566#bogus-nxdomain=64.94.110.11
567
Simon Kelley1cff1662004-03-12 08:12:58 +0000568# If you want to fix up DNS results from upstream servers, use the
569# alias option. This only works for IPv4.
570# This alias makes a result of 1.2.3.4 appear as 5.6.7.8
571#alias=1.2.3.4,5.6.7.8
572# and this maps 1.2.3.x to 5.6.7.x
573#alias=1.2.3.0,5.6.7.0,255.255.255.0
Simon Kelley73a08a22009-02-05 20:28:08 +0000574# and this maps 192.168.0.10->192.168.0.40 to 10.0.0.10->10.0.0.40
575#alias=192.168.0.10-192.168.0.40,10.0.0.0,255.255.255.0
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000576
577# Change these lines if you want dnsmasq to serve MX records.
578
579# Return an MX record named "maildomain.com" with target
580# servermachine.com and preference 50
581#mx-host=maildomain.com,servermachine.com,50
582
583# Set the default target for MX records created using the localmx option.
584#mx-target=servermachine.com
585
586# Return an MX record pointing to the mx-target for all local
587# machines.
588#localmx
589
590# Return an MX record pointing to itself for all local machines.
591#selfmx
592
Simon Kelleyb8187c82005-11-26 21:46:27 +0000593# Change the following lines if you want dnsmasq to serve SRV
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000594# records. These are useful if you want to serve ldap requests for
595# Active Directory and other windows-originated DNS requests.
596# See RFC 2782.
Simon Kelleyb8187c82005-11-26 21:46:27 +0000597# You may add multiple srv-host lines.
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000598# The fields are <name>,<target>,<port>,<priority>,<weight>
599# If the domain part if missing from the name (so that is just has the
600# service and protocol sections) then the domain given by the domain=
Simon Kelley0a852542005-03-23 20:28:59 +0000601# config option is used. (Note that expand-hosts does not need to be
602# set for this to work.)
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000603
604# A SRV record sending LDAP for the example.com domain to
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100605# ldapserver.example.com port 389
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000606#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389
607
608# A SRV record sending LDAP for the example.com domain to
Simon Kelley8ef5ada2010-06-03 19:42:45 +0100609# ldapserver.example.com port 389 (using domain=)
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000610#domain=example.com
611#srv-host=_ldap._tcp,ldapserver.example.com,389
612
613# Two SRV records for LDAP, each with different priorities
614#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,1
615#srv-host=_ldap._tcp.example.com,ldapserver.example.com,389,2
616
617# A SRV record indicating that there is no LDAP server for the domain
Simon Kelleyb8187c82005-11-26 21:46:27 +0000618# example.com
Simon Kelleyf6b7dc42005-01-23 12:06:08 +0000619#srv-host=_ldap._tcp.example.com
620
Simon Kelley832af0b2007-01-21 20:01:28 +0000621# The following line shows how to make dnsmasq serve an arbitrary PTR
622# record. This is useful for DNS-SD. (Note that the
623# domain-name expansion done for SRV records _does_not
624# occur for PTR records.)
625#ptr-record=_http._tcp.dns-sd-services,"New Employee Page._http._tcp.dns-sd-services"
Simon Kelley0a852542005-03-23 20:28:59 +0000626
627# Change the following lines to enable dnsmasq to serve TXT records.
628# These are used for things like SPF and zeroconf. (Note that the
Simon Kelleyb8187c82005-11-26 21:46:27 +0000629# domain-name expansion done for SRV records _does_not
Simon Kelley0a852542005-03-23 20:28:59 +0000630# occur for TXT records.)
631
632#Example SPF.
Simon Kelley832af0b2007-01-21 20:01:28 +0000633#txt-record=example.com,"v=spf1 a -all"
Simon Kelley0a852542005-03-23 20:28:59 +0000634
635#Example zeroconf
636#txt-record=_http._tcp.example.com,name=value,paper=A4
637
Simon Kelley9009d742008-11-14 20:04:27 +0000638# Provide an alias for a "local" DNS name. Note that this _only_ works
639# for targets which are names from DHCP or /etc/hosts. Give host
640# "bert" another name, bertrand
641#cname=bertand,bert
Simon Kelley0a852542005-03-23 20:28:59 +0000642
Simon Kelley9e4abcb2004-01-22 19:47:41 +0000643# For debugging purposes, log each DNS query as it passes through
644# dnsmasq.
645#log-queries
646
Simon Kelleyf2621c72007-04-29 19:47:21 +0100647# Log lots of extra information about DHCP transactions.
648#log-dhcp
649
Simon Kelleycf568a32012-10-09 20:51:31 +0100650# Include another lot of configuration options.
Simon Kelley33820b72004-04-03 21:10:00 +0100651#conf-file=/etc/dnsmasq.more.conf
Simon Kelley16972692006-10-16 20:04:18 +0100652#conf-dir=/etc/dnsmasq.d
Simon Kelley3e1551a2014-09-09 21:46:07 +0100653
654# Include all the files in a directory except those ending in .bak
655#conf-dir=/etc/dnsmasq.d,.bak
656
657# Include all files in a directory which end in .conf
Tomas Hozza3d9d2dd2014-10-06 10:46:48 +0100658#conf-dir=/etc/dnsmasq.d/,*.conf