xref: /freebsd/contrib/unbound/doc/example.conf.in (revision 87b759f0fa1f7554d50ce640c40138512bbded44)
1#
2# Example configuration file.
3#
4# See unbound.conf(5) man page, version 1.21.1.
5#
6# this is a comment.
7
8# Use this anywhere in the file to include other text into this file.
9#include: "otherfile.conf"
10
11# Use this anywhere in the file to include other text, that explicitly starts a
12# clause, into this file. Text after this directive needs to start a clause.
13#include-toplevel: "otherfile.conf"
14
15# The server clause sets the main parameters.
16server:
17	# whitespace is not necessary, but looks cleaner.
18
19	# verbosity number, 0 is least verbose. 1 is default.
20	# verbosity: 1
21
22	# print statistics to the log (for every thread) every N seconds.
23	# Set to "" or 0 to disable. Default is disabled.
24	# statistics-interval: 0
25
26	# enable shm for stats, default no.  if you enable also enable
27	# statistics-interval, every time it also writes stats to the
28	# shared memory segment keyed with shm-key.
29	# shm-enable: no
30
31	# shm for stats uses this key, and key+1 for the shared mem segment.
32	# shm-key: 11777
33
34	# enable cumulative statistics, without clearing them after printing.
35	# statistics-cumulative: no
36
37	# enable extended statistics (query types, answer codes, status)
38	# printed from unbound-control. Default off, because of speed.
39	# extended-statistics: no
40
41	# Inhibits selected extended statistics (qtype, qclass, qopcode, rcode,
42	# rpz-actions) from printing if their value is 0.
43	# Default on.
44	# statistics-inhibit-zero: yes
45
46	# number of threads to create. 1 disables threading.
47	# num-threads: 1
48
49	# specify the interfaces to answer queries from by ip-address.
50	# The default is to listen to localhost (127.0.0.1 and ::1).
51	# specify 0.0.0.0 and ::0 to bind to all available interfaces.
52	# specify every interface[@port] on a new 'interface:' labelled line.
53	# The listen interfaces are not changed on reload, only on restart.
54	# interface: 192.0.2.153
55	# interface: 192.0.2.154
56	# interface: 192.0.2.154@5003
57	# interface: 2001:DB8::5
58	# interface: eth0@5003
59
60	# enable this feature to copy the source address of queries to reply.
61	# Socket options are not supported on all platforms. experimental.
62	# interface-automatic: no
63
64	# instead of the default port, open additional ports separated by
65	# spaces when interface-automatic is enabled, by listing them here.
66	# interface-automatic-ports: ""
67
68	# port to answer queries from
69	# port: 53
70
71	# specify the interfaces to send outgoing queries to authoritative
72	# server from by ip-address. If none, the default (all) interface
73	# is used. Specify every interface on a 'outgoing-interface:' line.
74	# outgoing-interface: 192.0.2.153
75	# outgoing-interface: 2001:DB8::5
76	# outgoing-interface: 2001:DB8::6
77
78	# Specify a netblock to use remainder 64 bits as random bits for
79	# upstream queries.  Uses freebind option (Linux).
80	# outgoing-interface: 2001:DB8::/64
81	# Also (Linux:) ip -6 addr add 2001:db8::/64 dev lo
82	# And: ip -6 route add local 2001:db8::/64 dev lo
83	# And set prefer-ip6: yes to use the ip6 randomness from a netblock.
84	# Set this to yes to prefer ipv6 upstream servers over ipv4.
85	# prefer-ip6: no
86
87	# Prefer ipv4 upstream servers, even if ipv6 is available.
88	# prefer-ip4: no
89
90	# number of ports to allocate per thread, determines the size of the
91	# port range that can be open simultaneously.  About double the
92	# num-queries-per-thread, or, use as many as the OS will allow you.
93	# outgoing-range: 4096
94
95	# permit Unbound to use this port number or port range for
96	# making outgoing queries, using an outgoing interface.
97	# outgoing-port-permit: 32768
98
99	# deny Unbound the use this of port number or port range for
100	# making outgoing queries, using an outgoing interface.
101	# Use this to make sure Unbound does not grab a UDP port that some
102	# other server on this computer needs. The default is to avoid
103	# IANA-assigned port numbers.
104	# If multiple outgoing-port-permit and outgoing-port-avoid options
105	# are present, they are processed in order.
106	# outgoing-port-avoid: "3200-3208"
107
108	# number of outgoing simultaneous tcp buffers to hold per thread.
109	# outgoing-num-tcp: 10
110
111	# number of incoming simultaneous tcp buffers to hold per thread.
112	# incoming-num-tcp: 10
113
114	# buffer size for UDP port 53 incoming (SO_RCVBUF socket option).
115	# 0 is system default.  Use 4m to catch query spikes for busy servers.
116	# so-rcvbuf: 0
117
118	# buffer size for UDP port 53 outgoing (SO_SNDBUF socket option).
119	# 0 is system default.  Use 4m to handle spikes on very busy servers.
120	# so-sndbuf: 0
121
122	# use SO_REUSEPORT to distribute queries over threads.
123	# at extreme load it could be better to turn it off to distribute even.
124	# so-reuseport: yes
125
126	# use IP_TRANSPARENT so the interface: addresses can be non-local
127	# and you can config non-existing IPs that are going to work later on
128	# (uses IP_BINDANY on FreeBSD).
129	# ip-transparent: no
130
131	# use IP_FREEBIND so the interface: addresses can be non-local
132	# and you can bind to nonexisting IPs and interfaces that are down.
133	# Linux only.  On Linux you also have ip-transparent that is similar.
134	# ip-freebind: no
135
136	# the value of the Differentiated Services Codepoint (DSCP)
137	# in the differentiated services field (DS) of the outgoing
138	# IP packets
139	# ip-dscp: 0
140
141	# EDNS reassembly buffer to advertise to UDP peers (the actual buffer
142	# is set with msg-buffer-size).
143	# edns-buffer-size: 1232
144
145	# Maximum UDP response size (not applied to TCP response).
146	# Suggested values are 512 to 4096. Default is 1232. 65536 disables it.
147	# max-udp-size: 1232
148
149	# max memory to use for stream(tcp and tls) waiting result buffers.
150	# stream-wait-size: 4m
151
152	# buffer size for handling DNS data. No messages larger than this
153	# size can be sent or received, by UDP or TCP. In bytes.
154	# msg-buffer-size: 65552
155
156	# the amount of memory to use for the message cache.
157	# plain value in bytes or you can append k, m or G. default is "4Mb".
158	# msg-cache-size: 4m
159
160	# the number of slabs to use for the message cache.
161	# the number of slabs must be a power of 2.
162	# more slabs reduce lock contention, but fragment memory usage.
163	# msg-cache-slabs: 4
164
165	# the number of queries that a thread gets to service.
166	# num-queries-per-thread: 1024
167
168	# if very busy, 50% queries run to completion, 50% get timeout in msec
169	# jostle-timeout: 200
170
171	# msec to wait before close of port on timeout UDP. 0 disables.
172	# delay-close: 0
173
174	# perform connect for UDP sockets to mitigate ICMP side channel.
175	# udp-connect: yes
176
177	# The number of retries, per upstream nameserver in a delegation, when
178	# a throwaway response (also timeouts) is received.
179	# outbound-msg-retry: 5
180
181	# Hard limit on the number of outgoing queries Unbound will make while
182	# resolving a name, making sure large NS sets do not loop.
183	# It resets on query restarts (e.g., CNAME) and referrals.
184	# max-sent-count: 32
185
186	# Hard limit on the number of times Unbound is allowed to restart a
187	# query upon encountering a CNAME record.
188	# max-query-restarts: 11
189
190	# msec for waiting for an unknown server to reply.  Increase if you
191	# are behind a slow satellite link, to eg. 1128.
192	# unknown-server-time-limit: 376
193
194	# msec before recursion replies are dropped. The work item continues.
195	# discard-timeout: 1900
196
197	# Max number of replies waiting for recursion per IP address.
198	# wait-limit: 1000
199
200	# Max replies waiting for recursion for IP address with cookie.
201	# wait-limit-cookie: 10000
202
203	# Apart from the default, the wait limit can be set for a netblock.
204	# wait-limit-netblock: 192.0.2.0/24 50000
205
206	# Apart from the default, the wait limit with cookie can be adjusted.
207	# wait-limit-cookie-netblock: 192.0.2.0/24 50000
208
209	# the amount of memory to use for the RRset cache.
210	# plain value in bytes or you can append k, m or G. default is "4Mb".
211	# rrset-cache-size: 4m
212
213	# the number of slabs to use for the RRset cache.
214	# the number of slabs must be a power of 2.
215	# more slabs reduce lock contention, but fragment memory usage.
216	# rrset-cache-slabs: 4
217
218	# the time to live (TTL) value lower bound, in seconds. Default 0.
219	# If more than an hour could easily give trouble due to stale data.
220	# cache-min-ttl: 0
221
222	# the time to live (TTL) value cap for RRsets and messages in the
223	# cache. Items are not cached for longer. In seconds.
224	# cache-max-ttl: 86400
225
226	# the time to live (TTL) value cap for negative responses in the cache
227	# cache-max-negative-ttl: 3600
228
229	# the time to live (TTL) value lower bound, in seconds. Default 0.
230	# For negative responses in the cache. If disabled, default,
231	# cache-min-ttl applies if configured.
232	# cache-min-negative-ttl: 0
233
234	# the time to live (TTL) value for cached roundtrip times, lameness and
235	# EDNS version information for hosts. In seconds.
236	# infra-host-ttl: 900
237
238	# minimum wait time for responses, increase if uplink is long. In msec.
239	# infra-cache-min-rtt: 50
240
241	# maximum wait time for responses. In msec.
242	# infra-cache-max-rtt: 120000
243
244	# enable to make server probe down hosts more frequently.
245	# infra-keep-probing: no
246
247	# the number of slabs to use for the Infrastructure cache.
248	# the number of slabs must be a power of 2.
249	# more slabs reduce lock contention, but fragment memory usage.
250	# infra-cache-slabs: 4
251
252	# the maximum number of hosts that are cached (roundtrip, EDNS, lame).
253	# infra-cache-numhosts: 10000
254
255	# define a number of tags here, use with local-zone, access-control,
256	# interface-*.
257	# repeat the define-tag statement to add additional tags.
258	# define-tag: "tag1 tag2 tag3"
259
260	# Enable IPv4, "yes" or "no".
261	# do-ip4: yes
262
263	# Enable IPv6, "yes" or "no".
264	# do-ip6: yes
265
266	# If running unbound on an IPv6-only host, domains that only have
267	# IPv4 servers would become unresolveable.  If NAT64 is available in
268	# the network, unbound can use NAT64 to reach these servers with
269	# the following option.  This is NOT needed for enabling DNS64 on a
270	# system that has IPv4 connectivity.
271	# Consider also enabling prefer-ip6 to prefer native IPv6 connections
272	# to nameservers.
273	# do-nat64: no
274
275	# NAT64 prefix.  Defaults to using dns64-prefix value.
276	# nat64-prefix: 64:ff9b::0/96
277
278	# Enable UDP, "yes" or "no".
279	# do-udp: yes
280
281	# Enable TCP, "yes" or "no".
282	# do-tcp: yes
283
284	# upstream connections use TCP only (and no UDP), "yes" or "no"
285	# useful for tunneling scenarios, default no.
286	# tcp-upstream: no
287
288	# upstream connections also use UDP (even if do-udp is no).
289	# useful if if you want UDP upstream, but don't provide UDP downstream.
290	# udp-upstream-without-downstream: no
291
292	# Maximum segment size (MSS) of TCP socket on which the server
293	# responds to queries. Default is 0, system default MSS.
294	# tcp-mss: 0
295
296	# Maximum segment size (MSS) of TCP socket for outgoing queries.
297	# Default is 0, system default MSS.
298	# outgoing-tcp-mss: 0
299
300	# Idle TCP timeout, connection closed in milliseconds
301	# tcp-idle-timeout: 30000
302
303	# Enable EDNS TCP keepalive option.
304	# edns-tcp-keepalive: no
305
306	# Timeout for EDNS TCP keepalive, in msec. Overrides tcp-idle-timeout
307	# if edns-tcp-keepalive is set.
308	# edns-tcp-keepalive-timeout: 120000
309
310	# UDP queries that have waited in the socket buffer for a long time
311	# can be dropped. Default is 0, disabled. In seconds, such as 3.
312	# sock-queue-timeout: 0
313
314	# Use systemd socket activation for UDP, TCP, and control sockets.
315	# use-systemd: no
316
317	# Detach from the terminal, run in background, "yes" or "no".
318	# Set the value to "no" when Unbound runs as systemd service.
319	# do-daemonize: yes
320
321	# control which clients are allowed to make (recursive) queries
322	# to this server. Specify classless netblocks with /size and action.
323	# By default everything is refused, except for localhost.
324	# Choose deny (drop message), refuse (polite error reply),
325	# allow (recursive ok), allow_setrd (recursive ok, rd bit is forced on),
326	# allow_snoop (recursive and nonrecursive ok)
327	# allow_cookie (allow UDP with valid cookie or stateful transport)
328	# deny_non_local (drop queries unless can be answered from local-data)
329	# refuse_non_local (like deny_non_local but polite error reply).
330	# access-control: 127.0.0.0/8 allow
331	# access-control: ::1 allow
332	# access-control: ::ffff:127.0.0.1 allow
333
334	# tag access-control with list of tags (in "" with spaces between)
335	# Clients using this access control element use localzones that
336	# are tagged with one of these tags.
337	# access-control-tag: 192.0.2.0/24 "tag2 tag3"
338
339	# set action for particular tag for given access control element.
340	# if you have multiple tag values, the tag used to lookup the action
341	# is the first tag match between access-control-tag and local-zone-tag
342	# where "first" comes from the order of the define-tag values.
343	# access-control-tag-action: 192.0.2.0/24 tag3 refuse
344
345	# set redirect data for particular tag for access control element
346	# access-control-tag-data: 192.0.2.0/24 tag2 "A 127.0.0.1"
347
348	# Set view for access control element
349	# access-control-view: 192.0.2.0/24 viewname
350
351	# Similar to 'access-control:' but for interfaces.
352	# Control which listening interfaces are allowed to accept (recursive)
353	# queries for this server.
354	# The specified interfaces should be the same as the ones specified in
355	# 'interface:' followed by the action.
356	# The actions are the same as 'access-control:' above.
357	# By default all the interfaces configured are refused.
358	# Note: any 'access-control*:' setting overrides all 'interface-*:'
359	# settings for targeted clients.
360	# interface-action: 192.0.2.153 allow
361	# interface-action: 192.0.2.154 allow
362	# interface-action: 192.0.2.154@5003 allow
363	# interface-action: 2001:DB8::5 allow
364	# interface-action: eth0@5003 allow
365
366	# Similar to 'access-control-tag:' but for interfaces.
367	# Tag interfaces with a list of tags (in "" with spaces between).
368	# Interfaces using these tags use localzones that are tagged with one
369	# of these tags.
370	# The specified interfaces should be the same as the ones specified in
371	# 'interface:' followed by the list of tags.
372	# Note: any 'access-control*:' setting overrides all 'interface-*:'
373	# settings for targeted clients.
374	# interface-tag: eth0@5003 "tag2 tag3"
375
376	# Similar to 'access-control-tag-action:' but for interfaces.
377	# Set action for particular tag for a given interface element.
378	# If you have multiple tag values, the tag used to lookup the action
379	# is the first tag match between interface-tag and local-zone-tag
380	# where "first" comes from the order of the define-tag values.
381	# The specified interfaces should be the same as the ones specified in
382	# 'interface:' followed by the tag and action.
383	# Note: any 'access-control*:' setting overrides all 'interface-*:'
384	# settings for targeted clients.
385	# interface-tag-action: eth0@5003 tag3 refuse
386
387	# Similar to 'access-control-tag-data:' but for interfaces.
388	# Set redirect data for a particular tag for an interface element.
389	# The specified interfaces should be the same as the ones specified in
390	# 'interface:' followed by the tag and the redirect data.
391	# Note: any 'access-control*:' setting overrides all 'interface-*:'
392	# settings for targeted clients.
393	# interface-tag-data: eth0@5003 tag2 "A 127.0.0.1"
394
395	# Similar to 'access-control-view:' but for interfaces.
396	# Set view for an interface element.
397	# The specified interfaces should be the same as the ones specified in
398	# 'interface:' followed by the view name.
399	# Note: any 'access-control*:' setting overrides all 'interface-*:'
400	# settings for targeted clients.
401	# interface-view: eth0@5003 viewname
402
403	# if given, a chroot(2) is done to the given directory.
404	# i.e. you can chroot to the working directory, for example,
405	# for extra security, but make sure all files are in that directory.
406	#
407	# If chroot is enabled, you should pass the configfile (from the
408	# commandline) as a full path from the original root. After the
409	# chroot has been performed the now defunct portion of the config
410	# file path is removed to be able to reread the config after a reload.
411	#
412	# All other file paths (working dir, logfile, roothints, and
413	# key files) can be specified in several ways:
414	# 	o as an absolute path relative to the new root.
415	# 	o as a relative path to the working directory.
416	# 	o as an absolute path relative to the original root.
417	# In the last case the path is adjusted to remove the unused portion.
418	#
419	# The pid file can be absolute and outside of the chroot, it is
420	# written just prior to performing the chroot and dropping permissions.
421	#
422	# Additionally, Unbound may need to access /dev/urandom (for entropy).
423	# How to do this is specific to your OS.
424	#
425	# If you give "" no chroot is performed. The path must not end in a /.
426	# chroot: "@UNBOUND_CHROOT_DIR@"
427
428	# if given, user privileges are dropped (after binding port),
429	# and the given username is assumed. Default is user "unbound".
430	# If you give "" no privileges are dropped.
431	# username: "@UNBOUND_USERNAME@"
432
433	# the working directory. The relative files in this config are
434	# relative to this directory. If you give "" the working directory
435	# is not changed.
436	# If you give a server: directory: dir before include: file statements
437	# then those includes can be relative to the working directory.
438	# directory: "@UNBOUND_RUN_DIR@"
439
440	# the log file, "" means log to stderr.
441	# Use of this option sets use-syslog to "no".
442	# logfile: ""
443
444	# Log to syslog(3) if yes. The log facility LOG_DAEMON is used to
445	# log to. If yes, it overrides the logfile.
446	# use-syslog: yes
447
448	# Log identity to report. if empty, defaults to the name of argv[0]
449	# (usually "unbound").
450	# log-identity: ""
451
452	# print UTC timestamp in ascii to logfile, default is epoch in seconds.
453	# log-time-ascii: no
454
455	# print one line with time, IP, name, type, class for every query.
456	# log-queries: no
457
458	# print one line per reply, with time, IP, name, type, class, rcode,
459	# timetoresolve, fromcache and responsesize.
460	# log-replies: no
461
462	# log with tag 'query' and 'reply' instead of 'info' for
463	# filtering log-queries and log-replies from the log.
464	# log-tag-queryreply: no
465
466	# log with destination address, port and type for log-replies.
467	# log-destaddr: no
468
469	# log the local-zone actions, like local-zone type inform is enabled
470	# also for the other local zone types.
471	# log-local-actions: no
472
473	# print log lines that say why queries return SERVFAIL to clients.
474	# log-servfail: no
475
476	# the pid file. Can be an absolute path outside of chroot/work dir.
477	# pidfile: "@UNBOUND_PIDFILE@"
478
479	# file to read root hints from.
480	# get one from https://www.internic.net/domain/named.cache
481	# root-hints: ""
482
483	# enable to not answer id.server and hostname.bind queries.
484	# hide-identity: no
485
486	# enable to not answer version.server and version.bind queries.
487	# hide-version: no
488
489	# enable to not answer trustanchor.unbound queries.
490	# hide-trustanchor: no
491
492	# enable to not set the User-Agent HTTP header.
493	# hide-http-user-agent: no
494
495	# the identity to report. Leave "" or default to return hostname.
496	# identity: ""
497
498	# the version to report. Leave "" or default to return package version.
499	# version: ""
500
501	# NSID identity (hex string, or "ascii_somestring"). default disabled.
502	# nsid: "aabbccdd"
503
504	# User-Agent HTTP header to use. Leave "" or default to use package name
505	# and version.
506	# http-user-agent: ""
507
508	# the target fetch policy.
509	# series of integers describing the policy per dependency depth.
510	# The number of values in the list determines the maximum dependency
511	# depth the recursor will pursue before giving up. Each integer means:
512	# 	-1 : fetch all targets opportunistically,
513	# 	0: fetch on demand,
514	#	positive value: fetch that many targets opportunistically.
515	# Enclose the list of numbers between quotes ("").
516	# target-fetch-policy: "3 2 1 0 0"
517
518	# Harden against very small EDNS buffer sizes.
519	# harden-short-bufsize: yes
520
521	# Harden against unseemly large queries.
522	# harden-large-queries: no
523
524	# Harden against out of zone rrsets, to avoid spoofing attempts.
525	# harden-glue: yes
526
527	# Harden against receiving dnssec-stripped data. If you turn it
528	# off, failing to validate dnskey data for a trustanchor will
529	# trigger insecure mode for that zone (like without a trustanchor).
530	# Default on, which insists on dnssec data for trust-anchored zones.
531	# harden-dnssec-stripped: yes
532
533	# Harden against queries that fall under dnssec-signed nxdomain names.
534	# harden-below-nxdomain: yes
535
536	# Harden the referral path by performing additional queries for
537	# infrastructure data.  Validates the replies (if possible).
538	# Default off, because the lookups burden the server.  Experimental
539	# implementation of draft-wijngaards-dnsext-resolver-side-mitigation.
540	# harden-referral-path: no
541
542	# Harden against algorithm downgrade when multiple algorithms are
543	# advertised in the DS record.  If no, allows the weakest algorithm
544	# to validate the zone.
545	# harden-algo-downgrade: no
546
547	# Harden against unknown records in the authority section and the
548	# additional section.
549	# harden-unknown-additional: no
550
551	# Sent minimum amount of information to upstream servers to enhance
552	# privacy. Only sent minimum required labels of the QNAME and set QTYPE
553	# to A when possible.
554	# qname-minimisation: yes
555
556	# QNAME minimisation in strict mode. Do not fall-back to sending full
557	# QNAME to potentially broken nameservers. A lot of domains will not be
558	# resolvable when this option in enabled.
559	# This option only has effect when qname-minimisation is enabled.
560	# qname-minimisation-strict: no
561
562	# Aggressive NSEC uses the DNSSEC NSEC chain to synthesize NXDOMAIN
563	# and other denials, using information from previous NXDOMAINs answers.
564	# aggressive-nsec: yes
565
566	# Use 0x20-encoded random bits in the query to foil spoof attempts.
567	# This feature is an experimental implementation of draft dns-0x20.
568	# use-caps-for-id: no
569
570	# Domains (and domains in them) without support for dns-0x20 and
571	# the fallback fails because they keep sending different answers.
572	# caps-exempt: "licdn.com"
573	# caps-exempt: "senderbase.org"
574
575	# Enforce privacy of these addresses. Strips them away from answers.
576	# It may cause DNSSEC validation to additionally mark it as bogus.
577	# Protects against 'DNS Rebinding' (uses browser as network proxy).
578	# Only 'private-domain' and 'local-data' names are allowed to have
579	# these private addresses. No default.
580	# private-address: 10.0.0.0/8
581	# private-address: 172.16.0.0/12
582	# private-address: 192.168.0.0/16
583	# private-address: 169.254.0.0/16
584	# private-address: fd00::/8
585	# private-address: fe80::/10
586	# private-address: ::ffff:0:0/96
587
588	# Allow the domain (and its subdomains) to contain private addresses.
589	# local-data statements are allowed to contain private addresses too.
590	# private-domain: "example.com"
591
592	# If nonzero, unwanted replies are not only reported in statistics,
593	# but also a running total is kept per thread. If it reaches the
594	# threshold, a warning is printed and a defensive action is taken,
595	# the cache is cleared to flush potential poison out of it.
596	# A suggested value is 10000000, the default is 0 (turned off).
597	# unwanted-reply-threshold: 0
598
599	# Do not query the following addresses. No DNS queries are sent there.
600	# List one address per entry. List classless netblocks with /size,
601	# do-not-query-address: 127.0.0.1/8
602	# do-not-query-address: ::1
603
604	# if yes, the above default do-not-query-address entries are present.
605	# if no, localhost can be queried (for testing and debugging).
606	# do-not-query-localhost: yes
607
608	# if yes, perform prefetching of almost expired message cache entries.
609	# prefetch: no
610
611	# if yes, perform key lookups adjacent to normal lookups.
612	# prefetch-key: no
613
614	# deny queries of type ANY with an empty response.
615	# deny-any: no
616
617	# if yes, Unbound rotates RRSet order in response.
618	# rrset-roundrobin: yes
619
620	# if yes, Unbound doesn't insert authority/additional sections
621	# into response messages when those sections are not required.
622	# minimal-responses: yes
623
624	# true to disable DNSSEC lameness check in iterator.
625	# disable-dnssec-lame-check: no
626
627	# module configuration of the server. A string with identifiers
628	# separated by spaces. Syntax: "[dns64] [validator] iterator"
629	# most modules have to be listed at the beginning of the line,
630	# except cachedb(just before iterator), and python (at the beginning,
631	# or, just before the iterator).
632	# module-config: "validator iterator"
633
634	# File with trusted keys, kept uptodate using RFC5011 probes,
635	# initial file like trust-anchor-file, then it stores metadata.
636	# Use several entries, one per domain name, to track multiple zones.
637	#
638	# If you want to perform DNSSEC validation, run unbound-anchor before
639	# you start Unbound (i.e. in the system boot scripts).
640	# And then enable the auto-trust-anchor-file config item.
641	# Please note usage of unbound-anchor root anchor is at your own risk
642	# and under the terms of our LICENSE (see that file in the source).
643	# auto-trust-anchor-file: "@UNBOUND_ROOTKEY_FILE@"
644
645	# trust anchor signaling sends a RFC8145 key tag query after priming.
646	# trust-anchor-signaling: yes
647
648	# Root key trust anchor sentinel (draft-ietf-dnsop-kskroll-sentinel)
649	# root-key-sentinel: yes
650
651	# File with trusted keys for validation. Specify more than one file
652	# with several entries, one file per entry.
653	# Zone file format, with DS and DNSKEY entries.
654	# Note this gets out of date, use auto-trust-anchor-file please.
655	# trust-anchor-file: ""
656
657	# Trusted key for validation. DS or DNSKEY. specify the RR on a
658	# single line, surrounded by "". TTL is ignored. class is IN default.
659	# Note this gets out of date, use auto-trust-anchor-file please.
660	# (These examples are from August 2007 and may not be valid anymore).
661	# trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ=="
662	# trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A"
663
664	# File with trusted keys for validation. Specify more than one file
665	# with several entries, one file per entry. Like trust-anchor-file
666	# but has a different file format. Format is BIND-9 style format,
667	# the trusted-keys { name flag proto algo "key"; }; clauses are read.
668	# you need external update procedures to track changes in keys.
669	# trusted-keys-file: ""
670
671	# Ignore chain of trust. Domain is treated as insecure.
672	# domain-insecure: "example.com"
673
674	# Override the date for validation with a specific fixed date.
675	# Do not set this unless you are debugging signature inception
676	# and expiration. "" or "0" turns the feature off. -1 ignores date.
677	# val-override-date: ""
678
679	# The time to live for bogus data, rrsets and messages. This avoids
680	# some of the revalidation, until the time interval expires. in secs.
681	# val-bogus-ttl: 60
682
683	# The signature inception and expiration dates are allowed to be off
684	# by 10% of the signature lifetime (expir-incep) from our local clock.
685	# This leeway is capped with a minimum and a maximum.  In seconds.
686	# val-sig-skew-min: 3600
687	# val-sig-skew-max: 86400
688
689	# The maximum number the validator should restart validation with
690	# another authority in case of failed validation.
691	# val-max-restart: 5
692
693	# Should additional section of secure message also be kept clean of
694	# unsecure data. Useful to shield the users of this validator from
695	# potential bogus data in the additional section. All unsigned data
696	# in the additional section is removed from secure messages.
697	# val-clean-additional: yes
698
699	# Turn permissive mode on to permit bogus messages. Thus, messages
700	# for which security checks failed will be returned to clients,
701	# instead of SERVFAIL. It still performs the security checks, which
702	# result in interesting log files and possibly the AD bit in
703	# replies if the message is found secure. The default is off.
704	# val-permissive-mode: no
705
706	# Ignore the CD flag in incoming queries and refuse them bogus data.
707	# Enable it if the only clients of Unbound are legacy servers (w2008)
708	# that set CD but cannot validate themselves.
709	# ignore-cd-flag: no
710
711	# Disable the DO flag in outgoing requests. It is helpful for upstream
712	# devices that cannot handle DNSSEC information. But do not enable it
713	# otherwise, because it would stop DNSSEC validation.
714	# disable-edns-do: no
715
716	# Serve expired responses from cache, with serve-expired-reply-ttl in
717	# the response, and then attempt to fetch the data afresh.
718	# serve-expired: no
719	#
720	# Limit serving of expired responses to configured seconds after
721	# expiration. 0 disables the limit.
722	# serve-expired-ttl: 0
723	#
724	# Set the TTL of expired records to the serve-expired-ttl value after a
725	# failed attempt to retrieve the record from upstream. This makes sure
726	# that the expired records will be served as long as there are queries
727	# for it.
728	# serve-expired-ttl-reset: no
729	#
730	# TTL value to use when replying with expired data.
731	# serve-expired-reply-ttl: 30
732	#
733	# Time in milliseconds before replying to the client with expired data.
734	# This essentially enables the serve-stale behavior as specified in
735	# RFC 8767 that first tries to resolve before
736	# immediately responding with expired data.  0 disables this behavior.
737	# A recommended value is 1800.
738	# serve-expired-client-timeout: 0
739
740	# Return the original TTL as received from the upstream name server rather
741	# than the decrementing TTL as stored in the cache.  Enabling this feature
742	# does not impact cache expiry, it only changes the TTL Unbound embeds in
743	# responses to queries. Note that enabling this feature implicitly disables
744	# enforcement of the configured minimum and maximum TTL.
745	# serve-original-ttl: no
746
747	# Have the validator log failed validations for your diagnosis.
748	# 0: off. 1: A line per failed user query. 2: With reason and bad IP.
749	# val-log-level: 0
750
751	# It is possible to configure NSEC3 maximum iteration counts per
752	# keysize. Keep this table very short, as linear search is done.
753	# A message with an NSEC3 with larger count is marked insecure.
754	# List in ascending order the keysize and count values.
755	# val-nsec3-keysize-iterations: "1024 150 2048 150 4096 150"
756
757	# if enabled, ZONEMD verification failures do not block the zone.
758	# zonemd-permissive-mode: no
759
760	# instruct the auto-trust-anchor-file probing to add anchors after ttl.
761	# add-holddown: 2592000 # 30 days
762
763	# instruct the auto-trust-anchor-file probing to del anchors after ttl.
764	# del-holddown: 2592000 # 30 days
765
766	# auto-trust-anchor-file probing removes missing anchors after ttl.
767	# If the value 0 is given, missing anchors are not removed.
768	# keep-missing: 31622400 # 366 days
769
770	# debug option that allows very small holddown times for key rollover,
771	# otherwise the RFC mandates probe intervals must be at least 1 hour.
772	# permit-small-holddown: no
773
774	# the amount of memory to use for the key cache.
775	# plain value in bytes or you can append k, m or G. default is "4Mb".
776	# key-cache-size: 4m
777
778	# the number of slabs to use for the key cache.
779	# the number of slabs must be a power of 2.
780	# more slabs reduce lock contention, but fragment memory usage.
781	# key-cache-slabs: 4
782
783	# the amount of memory to use for the negative cache.
784	# plain value in bytes or you can append k, m or G. default is "1Mb".
785	# neg-cache-size: 1m
786
787	# By default, for a number of zones a small default 'nothing here'
788	# reply is built-in.  Query traffic is thus blocked.  If you
789	# wish to serve such zone you can unblock them by uncommenting one
790	# of the nodefault statements below.
791	# You may also have to use domain-insecure: zone to make DNSSEC work,
792	# unless you have your own trust anchors for this zone.
793	# local-zone: "localhost." nodefault
794	# local-zone: "127.in-addr.arpa." nodefault
795	# local-zone: "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa." nodefault
796	# local-zone: "home.arpa." nodefault
797	# local-zone: "onion." nodefault
798	# local-zone: "test." nodefault
799	# local-zone: "invalid." nodefault
800	# local-zone: "10.in-addr.arpa." nodefault
801	# local-zone: "16.172.in-addr.arpa." nodefault
802	# local-zone: "17.172.in-addr.arpa." nodefault
803	# local-zone: "18.172.in-addr.arpa." nodefault
804	# local-zone: "19.172.in-addr.arpa." nodefault
805	# local-zone: "20.172.in-addr.arpa." nodefault
806	# local-zone: "21.172.in-addr.arpa." nodefault
807	# local-zone: "22.172.in-addr.arpa." nodefault
808	# local-zone: "23.172.in-addr.arpa." nodefault
809	# local-zone: "24.172.in-addr.arpa." nodefault
810	# local-zone: "25.172.in-addr.arpa." nodefault
811	# local-zone: "26.172.in-addr.arpa." nodefault
812	# local-zone: "27.172.in-addr.arpa." nodefault
813	# local-zone: "28.172.in-addr.arpa." nodefault
814	# local-zone: "29.172.in-addr.arpa." nodefault
815	# local-zone: "30.172.in-addr.arpa." nodefault
816	# local-zone: "31.172.in-addr.arpa." nodefault
817	# local-zone: "168.192.in-addr.arpa." nodefault
818	# local-zone: "0.in-addr.arpa." nodefault
819	# local-zone: "254.169.in-addr.arpa." nodefault
820	# local-zone: "2.0.192.in-addr.arpa." nodefault
821	# local-zone: "100.51.198.in-addr.arpa." nodefault
822	# local-zone: "113.0.203.in-addr.arpa." nodefault
823	# local-zone: "255.255.255.255.in-addr.arpa." nodefault
824	# local-zone: "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa." nodefault
825	# local-zone: "d.f.ip6.arpa." nodefault
826	# local-zone: "8.e.f.ip6.arpa." nodefault
827	# local-zone: "9.e.f.ip6.arpa." nodefault
828	# local-zone: "a.e.f.ip6.arpa." nodefault
829	# local-zone: "b.e.f.ip6.arpa." nodefault
830	# local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault
831	# And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa.
832
833	# Add example.com into ipset
834	# local-zone: "example.com" ipset
835
836	# If Unbound is running service for the local host then it is useful
837	# to perform lan-wide lookups to the upstream, and unblock the
838	# long list of local-zones above.  If this Unbound is a dns server
839	# for a network of computers, disabled is better and stops information
840	# leakage of local lan information.
841	# unblock-lan-zones: no
842
843	# The insecure-lan-zones option disables validation for
844	# these zones, as if they were all listed as domain-insecure.
845	# insecure-lan-zones: no
846
847	# a number of locally served zones can be configured.
848	# 	local-zone: <zone> <type>
849	# 	local-data: "<resource record string>"
850	# o deny serves local data (if any), else, drops queries.
851	# o refuse serves local data (if any), else, replies with error.
852	# o static serves local data, else, nxdomain or nodata answer.
853	# o transparent gives local data, but resolves normally for other names
854	# o redirect serves the zone data for any subdomain in the zone.
855	# o nodefault can be used to normally resolve AS112 zones.
856	# o typetransparent resolves normally for other types and other names
857	# o inform acts like transparent, but logs client IP address
858	# o inform_deny drops queries and logs client IP address
859	# o inform_redirect redirects queries and logs client IP address
860	# o always_transparent, always_refuse, always_nxdomain, always_nodata,
861	#   always_deny resolve in that way but ignore local data for
862	#   that name
863	# o block_a resolves all records normally but returns
864	#   NODATA for A queries and ignores local data for that name
865	# o always_null returns 0.0.0.0 or ::0 for any name in the zone.
866	# o noview breaks out of that view towards global local-zones.
867	#
868	# defaults are localhost address, reverse for 127.0.0.1 and ::1
869	# and nxdomain for AS112 zones. If you configure one of these zones
870	# the default content is omitted, or you can omit it with 'nodefault'.
871	#
872	# If you configure local-data without specifying local-zone, by
873	# default a transparent local-zone is created for the data.
874	#
875	# You can add locally served data with
876	# local-zone: "local." static
877	# local-data: "mycomputer.local. IN A 192.0.2.51"
878	# local-data: 'mytext.local TXT "content of text record"'
879	#
880	# You can override certain queries with
881	# local-data: "adserver.example.com A 127.0.0.1"
882	#
883	# You can redirect a domain to a fixed address with
884	# (this makes example.com, www.example.com, etc, all go to 192.0.2.3)
885	# local-zone: "example.com" redirect
886	# local-data: "example.com A 192.0.2.3"
887	#
888	# Shorthand to make PTR records, "IPv4 name" or "IPv6 name".
889	# You can also add PTR records using local-data directly, but then
890	# you need to do the reverse notation yourself.
891	# local-data-ptr: "192.0.2.3 www.example.com"
892
893	# tag a localzone with a list of tag names (in "" with spaces between)
894	# local-zone-tag: "example.com" "tag2 tag3"
895
896	# add a netblock specific override to a localzone, with zone type
897	# local-zone-override: "example.com" 192.0.2.0/24 refuse
898
899	# service clients over TLS (on the TCP sockets) with plain DNS inside
900	# the TLS stream, and over HTTPS using HTTP/2 as specified in RFC8484.
901	# Give the certificate to use and private key.
902	# default is "" (disabled).  requires restart to take effect.
903	# tls-service-key: "path/to/privatekeyfile.key"
904	# tls-service-pem: "path/to/publiccertfile.pem"
905	# tls-port: 853
906	# https-port: 443
907
908	# cipher setting for TLSv1.2
909	# tls-ciphers: "DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256"
910	# cipher setting for TLSv1.3
911	# tls-ciphersuites: "TLS_AES_128_GCM_SHA256:TLS_AES_128_CCM_8_SHA256:TLS_AES_128_CCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256"
912
913	# Pad responses to padded queries received over TLS
914	# pad-responses: yes
915
916	# Padded responses will be padded to the closest multiple of this size.
917	# pad-responses-block-size: 468
918
919	# Use the SNI extension for TLS connections.  Default is yes.
920	# Changing the value requires a reload.
921	# tls-use-sni: yes
922
923	# Add the secret file for TLS Session Ticket.
924	# Secret file must be 80 bytes of random data.
925	# First key use to encrypt and decrypt TLS session tickets.
926	# Other keys use to decrypt only.
927	# requires restart to take effect.
928	# tls-session-ticket-keys: "path/to/secret_file1"
929	# tls-session-ticket-keys: "path/to/secret_file2"
930
931	# request upstream over TLS (with plain DNS inside the TLS stream).
932	# Default is no.  Can be turned on and off with unbound-control.
933	# tls-upstream: no
934
935	# Certificates used to authenticate connections made upstream.
936	# tls-cert-bundle: ""
937
938	# Add system certs to the cert bundle, from the Windows Cert Store
939	# tls-win-cert: no
940	# and on other systems, the default openssl certificates
941	# tls-system-cert: no
942
943	# Pad queries over TLS upstreams
944	# pad-queries: yes
945
946	# Padded queries will be padded to the closest multiple of this size.
947	# pad-queries-block-size: 128
948
949	# Also serve tls on these port numbers (eg. 443, ...), by listing
950	# tls-additional-port: portno for each of the port numbers.
951
952	# HTTP endpoint to provide DNS-over-HTTPS service on.
953	# http-endpoint: "/dns-query"
954
955	# HTTP/2 SETTINGS_MAX_CONCURRENT_STREAMS value to use.
956	# http-max-streams: 100
957
958	# Maximum number of bytes used for all HTTP/2 query buffers.
959	# http-query-buffer-size: 4m
960
961	# Maximum number of bytes used for all HTTP/2 response buffers.
962	# http-response-buffer-size: 4m
963
964	# Set TCP_NODELAY socket option on sockets used for DNS-over-HTTPS
965	# service.
966	# http-nodelay: yes
967
968	# Disable TLS for DNS-over-HTTP downstream service.
969	# http-notls-downstream: no
970
971	# The interfaces that use these listed port numbers will support and
972	# expect PROXYv2. For UDP and TCP/TLS interfaces.
973	# proxy-protocol-port: portno for each of the port numbers.
974
975	# DNS64 prefix. Must be specified when DNS64 is use.
976	# Enable dns64 in module-config.  Used to synthesize IPv6 from IPv4.
977	# dns64-prefix: 64:ff9b::0/96
978
979	# DNS64 ignore AAAA records for these domains and use A instead.
980	# dns64-ignore-aaaa: "example.com"
981
982	# ratelimit for uncached, new queries, this limits recursion effort.
983	# ratelimiting is experimental, and may help against randomqueryflood.
984	# if 0(default) it is disabled, otherwise state qps allowed per zone.
985	# ratelimit: 0
986
987	# ratelimits are tracked in a cache, size in bytes of cache (or k,m).
988	# ratelimit-size: 4m
989	# ratelimit cache slabs, reduces lock contention if equal to cpucount.
990	# ratelimit-slabs: 4
991
992	# 0 blocks when ratelimited, otherwise let 1/xth traffic through
993	# ratelimit-factor: 10
994
995	# Aggressive rate limit when the limit is reached and until demand has
996	# decreased in a 2 second rate window.
997	# ratelimit-backoff: no
998
999	# override the ratelimit for a specific domain name.
1000	# give this setting multiple times to have multiple overrides.
1001	# ratelimit-for-domain: example.com 1000
1002	# override the ratelimits for all domains below a domain name
1003	# can give this multiple times, the name closest to the zone is used.
1004	# ratelimit-below-domain: com 1000
1005
1006	# global query ratelimit for all ip addresses.
1007	# feature is experimental.
1008	# if 0(default) it is disabled, otherwise states qps allowed per ip address
1009	# ip-ratelimit: 0
1010
1011	# global query ratelimit for all ip addresses with a valid DNS Cookie.
1012	# feature is experimental.
1013	# if 0(default) it is disabled, otherwise states qps allowed per ip address
1014	# useful in combination with 'allow_cookie'.
1015	# If used, suggested to be higher than ip-ratelimit, tenfold.
1016	# ip-ratelimit-cookie: 0
1017
1018	# ip ratelimits are tracked in a cache, size in bytes of cache (or k,m).
1019	# ip-ratelimit-size: 4m
1020	# ip ratelimit cache slabs, reduces lock contention if equal to cpucount.
1021	# ip-ratelimit-slabs: 4
1022
1023	# 0 blocks when ip is ratelimited, otherwise let 1/xth traffic through
1024	# ip-ratelimit-factor: 10
1025
1026	# Aggressive rate limit when the limit is reached and until demand has
1027	# decreased in a 2 second rate window.
1028	# ip-ratelimit-backoff: no
1029
1030	# Limit the number of connections simultaneous from a netblock
1031	# tcp-connection-limit: 192.0.2.0/24 12
1032
1033	# select from the fastest servers this many times out of 1000. 0 means
1034	# the fast server select is disabled. prefetches are not sped up.
1035	# fast-server-permil: 0
1036	# the number of servers that will be used in the fast server selection.
1037	# fast-server-num: 3
1038
1039	# reply to requests containing DNS Cookies as specified in RFC 7873 and RFC 9018.
1040	# answer-cookie: no
1041
1042	# secret for DNS Cookie generation.
1043	# useful for anycast deployments.
1044	# example value "000102030405060708090a0b0c0d0e0f".
1045	# cookie-secret: <128 bit random hex string>
1046
1047	# File with cookie secrets, the 'cookie-secret:' option is ignored
1048	# and the file can be managed to have staging and active secrets
1049	# with remote control commands. Disabled with "". Default is "".
1050	# cookie-secret-file: "/usr/local/etc/unbound_cookiesecrets.txt"
1051
1052	# Enable to attach Extended DNS Error codes (RFC8914) to responses.
1053	# ede: no
1054
1055	# Enable to attach an Extended DNS Error (RFC8914) Code 3 - Stale
1056	# Answer as EDNS0 option to expired responses.
1057	# Note that the ede option above needs to be enabled for this to work.
1058	# ede-serve-expired: no
1059
1060	# Specific options for ipsecmod. Unbound needs to be configured with
1061	# --enable-ipsecmod for these to take effect.
1062	#
1063	# Enable or disable ipsecmod (it still needs to be defined in
1064	# module-config above). Can be used when ipsecmod needs to be
1065	# enabled/disabled via remote-control(below).
1066	# ipsecmod-enabled: yes
1067	#
1068	# Path to executable external hook. It must be defined when ipsecmod is
1069	# listed in module-config (above).
1070	# ipsecmod-hook: "./my_executable"
1071	#
1072	# When enabled Unbound will reply with SERVFAIL if the return value of
1073	# the ipsecmod-hook is not 0.
1074	# ipsecmod-strict: no
1075	#
1076	# Maximum time to live (TTL) for cached A/AAAA records with IPSECKEY.
1077	# ipsecmod-max-ttl: 3600
1078	#
1079	# Reply with A/AAAA even if the relevant IPSECKEY is bogus. Mainly used for
1080	# testing.
1081	# ipsecmod-ignore-bogus: no
1082	#
1083	# Domains for which ipsecmod will be triggered. If not defined (default)
1084	# all domains are treated as being allowed.
1085	# ipsecmod-allow: "example.com"
1086	# ipsecmod-allow: "nlnetlabs.nl"
1087
1088	# Timeout for REUSE entries in milliseconds.
1089	# tcp-reuse-timeout: 60000
1090	# Max number of queries on a reuse connection.
1091	# max-reuse-tcp-queries: 200
1092	# Timeout in milliseconds for TCP queries to auth servers.
1093	# tcp-auth-query-timeout: 3000
1094
1095
1096# Python config section. To enable:
1097# o use --with-pythonmodule to configure before compiling.
1098# o list python in the module-config string (above) to enable.
1099#   It can be at the start, it gets validated results, or just before
1100#   the iterator and process before DNSSEC validation.
1101# o and give a python-script to run.
1102python:
1103	# Script file to load
1104	# python-script: "@UNBOUND_SHARE_DIR@/ubmodule-tst.py"
1105
1106# Dynamic library config section. To enable:
1107# o use --with-dynlibmodule to configure before compiling.
1108# o list dynlib in the module-config string (above) to enable.
1109#   It can be placed anywhere, the dynlib module is only a very thin wrapper
1110#   to load modules dynamically.
1111# o and give a dynlib-file to run. If more than one dynlib entry is listed in
1112#   the module-config then you need one dynlib-file per instance.
1113dynlib:
1114	# Script file to load
1115	# dynlib-file: "@UNBOUND_SHARE_DIR@/dynlib.so"
1116
1117# Remote control config section.
1118remote-control:
1119	# Enable remote control with unbound-control(8) here.
1120	# set up the keys and certificates with unbound-control-setup.
1121	# control-enable: no
1122
1123	# what interfaces are listened to for remote control.
1124	# give 0.0.0.0 and ::0 to listen to all interfaces.
1125	# set to an absolute path to use a unix local name pipe, certificates
1126	# are not used for that, so key and cert files need not be present.
1127	# control-interface: 127.0.0.1
1128	# control-interface: ::1
1129
1130	# port number for remote control operations.
1131	# control-port: 8953
1132
1133	# for localhost, you can disable use of TLS by setting this to "no"
1134	# For local sockets this option is ignored, and TLS is not used.
1135	# control-use-cert: "yes"
1136
1137	# Unbound server key file.
1138	# server-key-file: "@UNBOUND_RUN_DIR@/unbound_server.key"
1139
1140	# Unbound server certificate file.
1141	# server-cert-file: "@UNBOUND_RUN_DIR@/unbound_server.pem"
1142
1143	# unbound-control key file.
1144	# control-key-file: "@UNBOUND_RUN_DIR@/unbound_control.key"
1145
1146	# unbound-control certificate file.
1147	# control-cert-file: "@UNBOUND_RUN_DIR@/unbound_control.pem"
1148
1149# Stub zones.
1150# Create entries like below, to make all queries for 'example.com' and
1151# 'example.org' go to the given list of nameservers. list zero or more
1152# nameservers by hostname or by ipaddress. If you set stub-prime to yes,
1153# the list is treated as priming hints (default is no).
1154# With stub-first yes, it attempts without the stub if it fails.
1155# Consider adding domain-insecure: name and local-zone: name nodefault
1156# to the server: section if the stub is a locally served zone.
1157# stub-zone:
1158#	name: "example.com"
1159#	stub-addr: 192.0.2.68
1160#	stub-prime: no
1161#	stub-first: no
1162#	stub-tcp-upstream: no
1163#	stub-tls-upstream: no
1164#	stub-no-cache: no
1165# stub-zone:
1166#	name: "example.org"
1167#	stub-host: ns.example.com.
1168
1169# Forward zones
1170# Create entries like below, to make all queries for 'example.com' and
1171# 'example.org' go to the given list of servers. These servers have to handle
1172# recursion to other nameservers. List zero or more nameservers by hostname
1173# or by ipaddress. Use an entry with name "." to forward all queries.
1174# If you enable forward-first, it attempts without the forward if it fails.
1175# forward-zone:
1176# 	name: "example.com"
1177# 	forward-addr: 192.0.2.68
1178# 	forward-addr: 192.0.2.73@5355  # forward to port 5355.
1179# 	forward-first: no
1180# 	forward-tcp-upstream: no
1181# 	forward-tls-upstream: no
1182#	forward-no-cache: no
1183# forward-zone:
1184# 	name: "example.org"
1185# 	forward-host: fwd.example.com
1186
1187# Authority zones
1188# The data for these zones is kept locally, from a file or downloaded.
1189# The data can be served to downstream clients, or used instead of the
1190# upstream (which saves a lookup to the upstream).  The first example
1191# has a copy of the root for local usage.  The second serves example.org
1192# authoritatively.  zonefile: reads from file (and writes to it if you also
1193# download it), primary: fetches with AXFR and IXFR, or url to zonefile.
1194# With allow-notify: you can give additional (apart from primaries and urls)
1195# sources of notifies.
1196# auth-zone:
1197#	name: "."
1198#	primary: 170.247.170.2        # b.root-servers.net
1199#	primary: 192.33.4.12          # c.root-servers.net
1200#	primary: 199.7.91.13          # d.root-servers.net
1201#	primary: 192.5.5.241          # f.root-servers.net
1202#	primary: 192.112.36.4         # g.root-servers.net
1203#	primary: 193.0.14.129         # k.root-servers.net
1204#	primary: 192.0.47.132         # xfr.cjr.dns.icann.org
1205#	primary: 192.0.32.132         # xfr.lax.dns.icann.org
1206#	primary: 2801:1b8:10::b       # b.root-servers.net
1207#	primary: 2001:500:2::c        # c.root-servers.net
1208#	primary: 2001:500:2d::d       # d.root-servers.net
1209#	primary: 2001:500:2f::f       # f.root-servers.net
1210#	primary: 2001:500:12::d0d     # g.root-servers.net
1211#	primary: 2001:7fd::1          # k.root-servers.net
1212#	primary: 2620:0:2830:202::132 # xfr.cjr.dns.icann.org
1213#	primary: 2620:0:2d0:202::132  # xfr.lax.dns.icann.org
1214#	fallback-enabled: yes
1215#	for-downstream: no
1216#	for-upstream: yes
1217# auth-zone:
1218#	name: "example.org"
1219#	for-downstream: yes
1220#	for-upstream: yes
1221#	zonemd-check: no
1222#	zonemd-reject-absence: no
1223#	zonefile: "example.org.zone"
1224
1225# Views
1226# Create named views. Name must be unique. Map views to requests using
1227# the access-control-view option. Views can contain zero or more local-zone
1228# and local-data options. Options from matching views will override global
1229# options. Global options will be used if no matching view is found.
1230# With view-first yes, it will try to answer using the global local-zone and
1231# local-data elements if there is no view specific match.
1232# view:
1233#	name: "viewname"
1234#	local-zone: "example.com" redirect
1235#	local-data: "example.com A 192.0.2.3"
1236#	local-data-ptr: "192.0.2.3 www.example.com"
1237#	view-first: no
1238# view:
1239#	name: "anotherview"
1240#	local-zone: "example.com" refuse
1241
1242# DNSCrypt
1243# To enable, use --enable-dnscrypt to configure before compiling.
1244# Caveats:
1245# 1. the keys/certs cannot be produced by Unbound. You can use dnscrypt-wrapper
1246#   for this: https://github.com/cofyc/dnscrypt-wrapper/blob/master/README.md#usage
1247# 2. dnscrypt channel attaches to an interface. you MUST set interfaces to
1248#   listen on `dnscrypt-port` with the follo0wing snippet:
1249# server:
1250#     interface: 0.0.0.0@443
1251#     interface: ::0@443
1252#
1253# Finally, `dnscrypt` config has its own section.
1254# dnscrypt:
1255#     dnscrypt-enable: yes
1256#     dnscrypt-port: 443
1257#     dnscrypt-provider: 2.dnscrypt-cert.example.com.
1258#     dnscrypt-secret-key: /path/unbound-conf/keys1/1.key
1259#     dnscrypt-secret-key: /path/unbound-conf/keys2/1.key
1260#     dnscrypt-provider-cert: /path/unbound-conf/keys1/1.cert
1261#     dnscrypt-provider-cert: /path/unbound-conf/keys2/1.cert
1262
1263# CacheDB
1264# External backend DB as auxiliary cache.
1265# To enable, use --enable-cachedb to configure before compiling.
1266# Specify the backend name
1267# (default is "testframe", which has no use other than for debugging and
1268# testing) and backend-specific options.  The 'cachedb' module must be
1269# included in module-config, just before the iterator module.
1270# cachedb:
1271#     backend: "testframe"
1272#     # secret seed string to calculate hashed keys
1273#     secret-seed: "default"
1274#     # if the backend should be read from, but not written to.
1275#     cachedb-no-store: no
1276#     # if the cachedb should be checked before a serve-expired response is
1277#     # given, when serve-expired is enabled.
1278#     cachedb-check-when-serve-expired: yes
1279#
1280#     # For "redis" backend:
1281#     # (to enable, use --with-libhiredis to configure before compiling)
1282#     # redis server's IP address or host name
1283#     redis-server-host: 127.0.0.1
1284#     # redis server's TCP port
1285#     redis-server-port: 6379
1286#     # if the server uses a unix socket, set its path, or "" when not used.
1287#     # redis-server-path: "/var/lib/redis/redis-server.sock"
1288#     # if the server uses an AUTH password, specify here, or "" when not used.
1289#     # redis-server-password: ""
1290#     # timeout (in ms) for communication with the redis server
1291#     redis-timeout: 100
1292#     # set timeout on redis records based on DNS response TTL
1293#     redis-expire-records: no
1294#     # redis logical database to use, 0 is the default database.
1295#     redis-logical-db: 0
1296
1297# IPSet
1298# Add specify domain into set via ipset.
1299# To enable:
1300# o use --enable-ipset to configure before compiling;
1301# o Unbound then needs to run as root user.
1302# ipset:
1303#     # set name for ip v4 addresses
1304#     name-v4: "list-v4"
1305#     # set name for ip v6 addresses
1306#     name-v6: "list-v6"
1307#
1308
1309# Dnstap logging support, if compiled in by using --enable-dnstap to configure.
1310# To enable, set the dnstap-enable to yes and also some of
1311# dnstap-log-..-messages to yes.  And select an upstream log destination, by
1312# socket path, TCP or TLS destination.
1313# dnstap:
1314# 	dnstap-enable: no
1315# 	# if set to yes frame streams will be used in bidirectional mode
1316# 	dnstap-bidirectional: yes
1317# 	dnstap-socket-path: "@DNSTAP_SOCKET_PATH@"
1318# 	# if "" use the unix socket in dnstap-socket-path, otherwise,
1319# 	# set it to "IPaddress[@port]" of the destination.
1320# 	dnstap-ip: ""
1321# 	# if set to yes if you want to use TLS to dnstap-ip, no for TCP.
1322# 	dnstap-tls: yes
1323# 	# name for authenticating the upstream server. or "" disabled.
1324# 	dnstap-tls-server-name: ""
1325# 	# if "", it uses the cert bundle from the main Unbound config.
1326# 	dnstap-tls-cert-bundle: ""
1327# 	# key file for client authentication, or "" disabled.
1328# 	dnstap-tls-client-key-file: ""
1329# 	# cert file for client authentication, or "" disabled.
1330# 	dnstap-tls-client-cert-file: ""
1331# 	dnstap-send-identity: no
1332# 	dnstap-send-version: no
1333# 	# if "" it uses the hostname.
1334# 	dnstap-identity: ""
1335# 	# if "" it uses the package version.
1336# 	dnstap-version: ""
1337# 	# log only 1/N messages, if 0 it is disabled. default 0.
1338# 	dnstap-sample-rate: 0
1339# 	dnstap-log-resolver-query-messages: no
1340# 	dnstap-log-resolver-response-messages: no
1341# 	dnstap-log-client-query-messages: no
1342# 	dnstap-log-client-response-messages: no
1343# 	dnstap-log-forwarder-query-messages: no
1344# 	dnstap-log-forwarder-response-messages: no
1345
1346# Response Policy Zones
1347# RPZ policies. Applied in order of configuration. Any match from an earlier
1348# RPZ zone will terminate the RPZ lookup. QNAME, Response IP
1349# Address, nsdname, nsip and clientip triggers are supported. Supported
1350# actions are: NXDOMAIN, NODATA, PASSTHRU, DROP, Local Data, tcp-only
1351# and drop.  Policies can be loaded from a file, or using zone
1352# transfer, or using HTTP. The respip module needs to be added
1353# to the module-config, e.g.: module-config: "respip validator iterator".
1354# rpz:
1355#     name: "rpz.example.com"
1356#     zonefile: "rpz.example.com"
1357#     primary: 192.0.2.0
1358#     allow-notify: 192.0.2.0/32
1359#     url: http://www.example.com/rpz.example.org.zone
1360#     rpz-action-override: cname
1361#     rpz-cname-override: www.example.org
1362#     rpz-log: yes
1363#     rpz-log-name: "example policy"
1364#     rpz-signal-nxdomain-ra: no
1365#     for-downstream: no
1366#     tags: "example"
1367