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30 .Nd resolvconf configuration file
33 is the configuration file for
37 file is a shell script that is sourced by
41 must contain valid shell commands.
42 Listed below are the standard
44 variables that may be set.
45 If the values contain white space for special shell characters,
46 ensure they are quoted and escaped correctly.
48 After updating this file, you may wish to run
50 to apply the new configuration.
52 When a dynamically generated list is appended or prepended to, the whole
53 is made unique where left-most wins.
54 .Sh RESOLVCONF OPTIONS
55 .Bl -tag -width indent
59 from running any subscribers.
61 .It Sy interface_order
62 These interfaces will always be processed first.
63 If unset, defaults to the following:-
66 These interfaces will be processed next, unless they have a metric.
67 If unset, defaults to the following:-
68 .D1 tap[0-9]* tun[0-9]* vpn vpn[0-9]* ppp[0-9]* ippp[0-9]*
69 .It Sy local_nameservers
70 If unset, defaults to the following:-
71 .D1 127.* 0.0.0.0 255.255.255.255 ::1
73 Prepend search domains to the dynamically generated list.
74 .It Sy search_domains_append
75 Append search domains to the dynamically generated list.
76 .It Sy domain_blacklist
77 A list of domains to be removed from consideration.
78 To remove a domain, you can use foo.*
79 To remove a sub domain, you can use *.bar
81 Prepend name servers to the dynamically generated list.
82 You should set this to 127.0.0.1 if you use a local name server other than
84 .It Sy name_servers_append
85 Append name servers to the dynamically generated list.
86 .It Sy name_server_blacklist
87 A list of name servers to be removed from consideration.
88 The default is 0.0.0.0 as some faulty routers send it via DHCP.
89 To remove a block, you can use 192.168.*
90 .It Sy private_interfaces
91 These interfaces name servers will only be queried for the domains listed
93 Useful for VPN domains.
94 This is equivalent to the
98 Is a space separated list of replacement keywords. The syntax is this:
99 .Va $keyword Ns / Ns Va $match Ns / Ns Va $replacement
101 Example, given this resolv.conf:
103 .D1 search foo.org dead.beef
104 .D1 nameserver 1.2.3.4
105 .D1 nameserver 2.3.4.5
106 and this configuaration:
107 .D1 replace="search/foo*/bar.com nameserver/1.2.3.4/5.6.7.8 nameserver/2.3.4.5/"
108 you would get this resolv.conf instead:
111 .D1 nameserver 5.6.7.8
113 Works the same way as
115 except it works on each space separated value rather than the whole line,
116 so it's useful for the replacing a single domain within the search directive.
117 Using the same example resolv.conf and changing
121 you would get this resolv.conf instead:
123 .D1 search bar.com dead.beef
124 .D1 nameserver 5.6.7.8
126 Override the default state directory of
128 This should not be changed once
130 is in use unless the old directory is copied to the new one.
133 The following variables affect
136 .Bl -tag -width indent
141 .It Sy resolv_conf_options
142 A list of libc resolver options, as specified in
144 .It Sy resolv_conf_passthrough
145 When set to YES the latest resolv.conf is written to
147 without any alteration.
148 When set to /dev/null or NULL,
149 .Sy resolv_conf_local_only
151 .Sy local_nameservers
152 is unset unless overriden and only the information set in
156 .It Sy resolv_conf_sortlist
157 A libc resolver sortlist, as specified in
159 .It Sy resolv_conf_local_only
160 If a local name server is configured then the default is just to specify that
161 and ignore all other entries as they will be configured for the local
163 Set this to NO to also list non-local nameservers.
164 This will give you working DNS even if the local nameserver stops functioning
165 at the expense of duplicated server queries.
166 .It Sy append_nameservers
167 Append name servers to the dynamically generated list.
168 .It Sy prepend_nameservers
169 Prepend name servers to the dynamically generated list.
171 Append search domains to the dynamically generated list.
172 .It Sy prepend_search
173 Prepend search domains to the dynamically generated list.
175 .Sh SUBSCRIBER OPTIONS
176 openresolv ships with subscribers for the name servers
182 Each subscriber can create configuration files which should be included in
183 in the subscribers main configuration file.
185 To disable a subscriber, simply set it's name to NO.
186 For example, to disable the libc subscriber you would set:
188 .Bl -tag -width indent
190 This file tells dnsmasq which name servers to use for specific domains.
191 .It Sy dnsmasq_resolv
192 This file tells dnsmasq which name servers to use for global lookups.
194 Example resolvconf.conf for dnsmasq:
195 .D1 name_servers=127.0.0.1
196 .D1 dnsmasq_conf=/etc/dnsmasq-conf.conf
197 .D1 dnsmasq_resolv=/etc/dnsmasq-resolv.conf
199 Example dnsmasq.conf:
200 .D1 listen-address=127.0.0.1
201 .D1 # If dnsmasq is compiled for DBus then we can take
202 .D1 # advantage of not having to restart dnsmasq.
204 .D1 conf-file=/etc/dnsmasq-conf.conf
205 .D1 resolv-file=/etc/dnsmasq-resolv.conf
207 Include this file in the named options block.
208 This file tells named which name servers to use for global lookups.
210 Include this file in the named global scope, after the options block.
211 This file tells named which name servers to use for specific domains.
213 Example resolvconf.conf for named:
214 .D1 name_servers=127.0.0.1
215 .D1 named_options=/etc/named-options.conf
216 .D1 named_zones=/etc/named-zones.conf
220 .D1 listen-on { 127.0.0.1; };
221 .D1 include "/etc/named-options.conf";
223 .D1 include "/etc/named-zones.conf";
225 This is the main pdnsd configuration file which we modify to add our
227 If this variable is not set then we rely on the pdnsd configuration file
232 This file tells pdnsd about global name servers.
233 If this variable is not set then it's written to
236 Example resolvconf.conf for pdnsd:
237 .D1 name_servers=127.0.0.1
238 .D1 pdnsd_conf=/etc/pdnsd.conf
239 .D1 # pdnsd_resolv=/etc/pdnsd-resolv.conf
243 .D1 server_ip = 127.0.0.1;
247 .D1 # A server definition is required, even if emtpy.
250 .D1 # file="/etc/pdnsd-resolv.conf";
253 This file tells unbound about specific and global name servers.
254 .It Sy unbound_insecure
255 When set to YES, unbound marks the domains as insecure, thus ignoring DNSSEC.
257 Example resolvconf.conf for unbound:
258 .D1 name_servers=127.0.0.1
259 .D1 unbound_conf=/etc/unbound-resolvconf.conf
261 Example unbound.conf:
262 .D1 include: /etc/unbound-resolvconf.conf
264 .Sh SUBSCRIBER INTEGRATION
265 Not all distributions store the files the subscribers need in the same
267 For example, named service scripts have been called named, bind and rc.bind
268 and they could be located in a directory called /etc/rc.d, /etc/init.d or
270 Each subscriber attempts to automatically configure itself, but not every
271 distribution has been catered for.
272 Also, users could equally want to use a different version from the one
273 installed by default, such as bind8 and bind9.
274 To accomodate this, the subscribers have these files in configurable
275 variables, documented below.
277 .Bl -tag -width indent
278 .It Sy dnsmasq_service
279 Location of the dnsmasq service.
280 .It Sy dnsmasq_restart
281 Command to restart the dnsmasq service.
283 Location of the dnsmasq pidfile.
285 Location of the libc service.
287 Command to restart the libc service.
289 Location of the named service.
291 Command to restart the named service.
293 Command to restart the pdnsd service.
294 .It Sy unbound_service
295 Location of the unbound service.
296 .It Sy unbound_restart
297 Command to restart the unbound service.
299 Location of the unbound pidfile.
307 .An Roy Marples Aq Mt roy@marples.name
309 Each distribution is a special snowflake and likes to name the same thing
310 differently, namely the named service script.
312 Please report them to
313 .Lk http://roy.marples.name/projects/openresolv