xref: /freebsd/contrib/unbound/doc/example.conf.in (revision 924226fba12cc9a228c73b956e1b7fa24c60b055)
1#
2# Example configuration file.
3#
4# See unbound.conf(5) man page, version 1.16.0.
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	# number of threads to create. 1 disables threading.
42	# num-threads: 1
43
44	# specify the interfaces to answer queries from by ip-address.
45	# The default is to listen to localhost (127.0.0.1 and ::1).
46	# specify 0.0.0.0 and ::0 to bind to all available interfaces.
47	# specify every interface[@port] on a new 'interface:' labelled line.
48	# The listen interfaces are not changed on reload, only on restart.
49	# interface: 192.0.2.153
50	# interface: 192.0.2.154
51	# interface: 192.0.2.154@5003
52	# interface: 2001:DB8::5
53
54	# enable this feature to copy the source address of queries to reply.
55	# Socket options are not supported on all platforms. experimental.
56	# interface-automatic: no
57
58	# instead of the default port, open additional ports separated by
59	# spaces when interface-automatic is enabled, by listing them here.
60	# interface-automatic-ports: ""
61
62	# port to answer queries from
63	# port: 53
64
65	# specify the interfaces to send outgoing queries to authoritative
66	# server from by ip-address. If none, the default (all) interface
67	# is used. Specify every interface on a 'outgoing-interface:' line.
68	# outgoing-interface: 192.0.2.153
69	# outgoing-interface: 2001:DB8::5
70	# outgoing-interface: 2001:DB8::6
71
72	# Specify a netblock to use remainder 64 bits as random bits for
73	# upstream queries.  Uses freebind option (Linux).
74	# outgoing-interface: 2001:DB8::/64
75	# Also (Linux:) ip -6 addr add 2001:db8::/64 dev lo
76	# And: ip -6 route add local 2001:db8::/64 dev lo
77	# And set prefer-ip6: yes to use the ip6 randomness from a netblock.
78	# Set this to yes to prefer ipv6 upstream servers over ipv4.
79	# prefer-ip6: no
80
81	# Prefer ipv4 upstream servers, even if ipv6 is available.
82	# prefer-ip4: no
83
84	# number of ports to allocate per thread, determines the size of the
85	# port range that can be open simultaneously.  About double the
86	# num-queries-per-thread, or, use as many as the OS will allow you.
87	# outgoing-range: 4096
88
89	# permit Unbound to use this port number or port range for
90	# making outgoing queries, using an outgoing interface.
91	# outgoing-port-permit: 32768
92
93	# deny Unbound the use this of port number or port range for
94	# making outgoing queries, using an outgoing interface.
95	# Use this to make sure Unbound does not grab a UDP port that some
96	# other server on this computer needs. The default is to avoid
97	# IANA-assigned port numbers.
98	# If multiple outgoing-port-permit and outgoing-port-avoid options
99	# are present, they are processed in order.
100	# outgoing-port-avoid: "3200-3208"
101
102	# number of outgoing simultaneous tcp buffers to hold per thread.
103	# outgoing-num-tcp: 10
104
105	# number of incoming simultaneous tcp buffers to hold per thread.
106	# incoming-num-tcp: 10
107
108	# buffer size for UDP port 53 incoming (SO_RCVBUF socket option).
109	# 0 is system default.  Use 4m to catch query spikes for busy servers.
110	# so-rcvbuf: 0
111
112	# buffer size for UDP port 53 outgoing (SO_SNDBUF socket option).
113	# 0 is system default.  Use 4m to handle spikes on very busy servers.
114	# so-sndbuf: 0
115
116	# use SO_REUSEPORT to distribute queries over threads.
117	# at extreme load it could be better to turn it off to distribute even.
118	# so-reuseport: yes
119
120	# use IP_TRANSPARENT so the interface: addresses can be non-local
121	# and you can config non-existing IPs that are going to work later on
122	# (uses IP_BINDANY on FreeBSD).
123	# ip-transparent: no
124
125	# use IP_FREEBIND so the interface: addresses can be non-local
126	# and you can bind to nonexisting IPs and interfaces that are down.
127	# Linux only.  On Linux you also have ip-transparent that is similar.
128	# ip-freebind: no
129
130	# the value of the Differentiated Services Codepoint (DSCP)
131	# in the differentiated services field (DS) of the outgoing
132	# IP packets
133	# ip-dscp: 0
134
135	# EDNS reassembly buffer to advertise to UDP peers (the actual buffer
136	# is set with msg-buffer-size).
137	# edns-buffer-size: 1232
138
139	# Maximum UDP response size (not applied to TCP response).
140	# Suggested values are 512 to 4096. Default is 4096. 65536 disables it.
141	# max-udp-size: 4096
142
143	# max memory to use for stream(tcp and tls) waiting result buffers.
144	# stream-wait-size: 4m
145
146	# buffer size for handling DNS data. No messages larger than this
147	# size can be sent or received, by UDP or TCP. In bytes.
148	# msg-buffer-size: 65552
149
150	# the amount of memory to use for the message cache.
151	# plain value in bytes or you can append k, m or G. default is "4Mb".
152	# msg-cache-size: 4m
153
154	# the number of slabs to use for the message cache.
155	# the number of slabs must be a power of 2.
156	# more slabs reduce lock contention, but fragment memory usage.
157	# msg-cache-slabs: 4
158
159	# the number of queries that a thread gets to service.
160	# num-queries-per-thread: 1024
161
162	# if very busy, 50% queries run to completion, 50% get timeout in msec
163	# jostle-timeout: 200
164
165	# msec to wait before close of port on timeout UDP. 0 disables.
166	# delay-close: 0
167
168	# perform connect for UDP sockets to mitigate ICMP side channel.
169	# udp-connect: yes
170
171	# The number of retries when a non-positive response is received.
172	# outbound-msg-retry: 5
173
174	# msec for waiting for an unknown server to reply.  Increase if you
175	# are behind a slow satellite link, to eg. 1128.
176	# unknown-server-time-limit: 376
177
178	# the amount of memory to use for the RRset cache.
179	# plain value in bytes or you can append k, m or G. default is "4Mb".
180	# rrset-cache-size: 4m
181
182	# the number of slabs to use for the RRset cache.
183	# the number of slabs must be a power of 2.
184	# more slabs reduce lock contention, but fragment memory usage.
185	# rrset-cache-slabs: 4
186
187	# the time to live (TTL) value lower bound, in seconds. Default 0.
188	# If more than an hour could easily give trouble due to stale data.
189	# cache-min-ttl: 0
190
191	# the time to live (TTL) value cap for RRsets and messages in the
192	# cache. Items are not cached for longer. In seconds.
193	# cache-max-ttl: 86400
194
195	# the time to live (TTL) value cap for negative responses in the cache
196	# cache-max-negative-ttl: 3600
197
198	# the time to live (TTL) value for cached roundtrip times, lameness and
199	# EDNS version information for hosts. In seconds.
200	# infra-host-ttl: 900
201
202	# minimum wait time for responses, increase if uplink is long. In msec.
203	# infra-cache-min-rtt: 50
204
205	# enable to make server probe down hosts more frequently.
206	# infra-keep-probing: no
207
208	# the number of slabs to use for the Infrastructure cache.
209	# the number of slabs must be a power of 2.
210	# more slabs reduce lock contention, but fragment memory usage.
211	# infra-cache-slabs: 4
212
213	# the maximum number of hosts that are cached (roundtrip, EDNS, lame).
214	# infra-cache-numhosts: 10000
215
216	# define a number of tags here, use with local-zone, access-control.
217	# repeat the define-tag statement to add additional tags.
218	# define-tag: "tag1 tag2 tag3"
219
220	# Enable IPv4, "yes" or "no".
221	# do-ip4: yes
222
223	# Enable IPv6, "yes" or "no".
224	# do-ip6: yes
225
226	# Enable UDP, "yes" or "no".
227	# do-udp: yes
228
229	# Enable TCP, "yes" or "no".
230	# do-tcp: yes
231
232	# upstream connections use TCP only (and no UDP), "yes" or "no"
233	# useful for tunneling scenarios, default no.
234	# tcp-upstream: no
235
236	# upstream connections also use UDP (even if do-udp is no).
237	# useful if if you want UDP upstream, but don't provide UDP downstream.
238	# udp-upstream-without-downstream: no
239
240	# Maximum segment size (MSS) of TCP socket on which the server
241	# responds to queries. Default is 0, system default MSS.
242	# tcp-mss: 0
243
244	# Maximum segment size (MSS) of TCP socket for outgoing queries.
245	# Default is 0, system default MSS.
246	# outgoing-tcp-mss: 0
247
248	# Idle TCP timeout, connection closed in milliseconds
249	# tcp-idle-timeout: 30000
250
251	# Enable EDNS TCP keepalive option.
252	# edns-tcp-keepalive: no
253
254	# Timeout for EDNS TCP keepalive, in msec.
255	# edns-tcp-keepalive-timeout: 120000
256
257	# Use systemd socket activation for UDP, TCP, and control sockets.
258	# use-systemd: no
259
260	# Detach from the terminal, run in background, "yes" or "no".
261	# Set the value to "no" when Unbound runs as systemd service.
262	# do-daemonize: yes
263
264	# control which clients are allowed to make (recursive) queries
265	# to this server. Specify classless netblocks with /size and action.
266	# By default everything is refused, except for localhost.
267	# Choose deny (drop message), refuse (polite error reply),
268	# allow (recursive ok), allow_setrd (recursive ok, rd bit is forced on),
269	# allow_snoop (recursive and nonrecursive ok)
270	# deny_non_local (drop queries unless can be answered from local-data)
271	# refuse_non_local (like deny_non_local but polite error reply).
272	# access-control: 0.0.0.0/0 refuse
273	# access-control: 127.0.0.0/8 allow
274	# access-control: ::0/0 refuse
275	# access-control: ::1 allow
276	# access-control: ::ffff:127.0.0.1 allow
277
278	# tag access-control with list of tags (in "" with spaces between)
279	# Clients using this access control element use localzones that
280	# are tagged with one of these tags.
281	# access-control-tag: 192.0.2.0/24 "tag2 tag3"
282
283	# set action for particular tag for given access control element
284	# if you have multiple tag values, the tag used to lookup the action
285	# is the first tag match between access-control-tag and local-zone-tag
286	# where "first" comes from the order of the define-tag values.
287	# access-control-tag-action: 192.0.2.0/24 tag3 refuse
288
289	# set redirect data for particular tag for access control element
290	# access-control-tag-data: 192.0.2.0/24 tag2 "A 127.0.0.1"
291
292	# Set view for access control element
293	# access-control-view: 192.0.2.0/24 viewname
294
295	# if given, a chroot(2) is done to the given directory.
296	# i.e. you can chroot to the working directory, for example,
297	# for extra security, but make sure all files are in that directory.
298	#
299	# If chroot is enabled, you should pass the configfile (from the
300	# commandline) as a full path from the original root. After the
301	# chroot has been performed the now defunct portion of the config
302	# file path is removed to be able to reread the config after a reload.
303	#
304	# All other file paths (working dir, logfile, roothints, and
305	# key files) can be specified in several ways:
306	# 	o as an absolute path relative to the new root.
307	# 	o as a relative path to the working directory.
308	# 	o as an absolute path relative to the original root.
309	# In the last case the path is adjusted to remove the unused portion.
310	#
311	# The pid file can be absolute and outside of the chroot, it is
312	# written just prior to performing the chroot and dropping permissions.
313	#
314	# Additionally, Unbound may need to access /dev/urandom (for entropy).
315	# How to do this is specific to your OS.
316	#
317	# If you give "" no chroot is performed. The path must not end in a /.
318	# chroot: "@UNBOUND_CHROOT_DIR@"
319
320	# if given, user privileges are dropped (after binding port),
321	# and the given username is assumed. Default is user "unbound".
322	# If you give "" no privileges are dropped.
323	# username: "@UNBOUND_USERNAME@"
324
325	# the working directory. The relative files in this config are
326	# relative to this directory. If you give "" the working directory
327	# is not changed.
328	# If you give a server: directory: dir before include: file statements
329	# then those includes can be relative to the working directory.
330	# directory: "@UNBOUND_RUN_DIR@"
331
332	# the log file, "" means log to stderr.
333	# Use of this option sets use-syslog to "no".
334	# logfile: ""
335
336	# Log to syslog(3) if yes. The log facility LOG_DAEMON is used to
337	# log to. If yes, it overrides the logfile.
338	# use-syslog: yes
339
340	# Log identity to report. if empty, defaults to the name of argv[0]
341	# (usually "unbound").
342	# log-identity: ""
343
344	# print UTC timestamp in ascii to logfile, default is epoch in seconds.
345	# log-time-ascii: no
346
347	# print one line with time, IP, name, type, class for every query.
348	# log-queries: no
349
350	# print one line per reply, with time, IP, name, type, class, rcode,
351	# timetoresolve, fromcache and responsesize.
352	# log-replies: no
353
354	# log with tag 'query' and 'reply' instead of 'info' for
355	# filtering log-queries and log-replies from the log.
356	# log-tag-queryreply: no
357
358	# log the local-zone actions, like local-zone type inform is enabled
359	# also for the other local zone types.
360	# log-local-actions: no
361
362	# print log lines that say why queries return SERVFAIL to clients.
363	# log-servfail: no
364
365	# the pid file. Can be an absolute path outside of chroot/work dir.
366	# pidfile: "@UNBOUND_PIDFILE@"
367
368	# file to read root hints from.
369	# get one from https://www.internic.net/domain/named.cache
370	# root-hints: ""
371
372	# enable to not answer id.server and hostname.bind queries.
373	# hide-identity: no
374
375	# enable to not answer version.server and version.bind queries.
376	# hide-version: no
377
378	# enable to not answer trustanchor.unbound queries.
379	# hide-trustanchor: no
380
381	# enable to not set the User-Agent HTTP header.
382	# hide-http-user-agent: no
383
384	# the identity to report. Leave "" or default to return hostname.
385	# identity: ""
386
387	# the version to report. Leave "" or default to return package version.
388	# version: ""
389
390	# NSID identity (hex string, or "ascii_somestring"). default disabled.
391	# nsid: "aabbccdd"
392
393	# User-Agent HTTP header to use. Leave "" or default to use package name
394	# and version.
395	# http-user-agent: ""
396
397	# the target fetch policy.
398	# series of integers describing the policy per dependency depth.
399	# The number of values in the list determines the maximum dependency
400	# depth the recursor will pursue before giving up. Each integer means:
401	# 	-1 : fetch all targets opportunistically,
402	# 	0: fetch on demand,
403	#	positive value: fetch that many targets opportunistically.
404	# Enclose the list of numbers between quotes ("").
405	# target-fetch-policy: "3 2 1 0 0"
406
407	# Harden against very small EDNS buffer sizes.
408	# harden-short-bufsize: yes
409
410	# Harden against unseemly large queries.
411	# harden-large-queries: no
412
413	# Harden against out of zone rrsets, to avoid spoofing attempts.
414	# harden-glue: yes
415
416	# Harden against receiving dnssec-stripped data. If you turn it
417	# off, failing to validate dnskey data for a trustanchor will
418	# trigger insecure mode for that zone (like without a trustanchor).
419	# Default on, which insists on dnssec data for trust-anchored zones.
420	# harden-dnssec-stripped: yes
421
422	# Harden against queries that fall under dnssec-signed nxdomain names.
423	# harden-below-nxdomain: yes
424
425	# Harden the referral path by performing additional queries for
426	# infrastructure data.  Validates the replies (if possible).
427	# Default off, because the lookups burden the server.  Experimental
428	# implementation of draft-wijngaards-dnsext-resolver-side-mitigation.
429	# harden-referral-path: no
430
431	# Harden against algorithm downgrade when multiple algorithms are
432	# advertised in the DS record.  If no, allows the weakest algorithm
433	# to validate the zone.
434	# harden-algo-downgrade: no
435
436	# Sent minimum amount of information to upstream servers to enhance
437	# privacy. Only sent minimum required labels of the QNAME and set QTYPE
438	# to A when possible.
439	# qname-minimisation: yes
440
441	# QNAME minimisation in strict mode. Do not fall-back to sending full
442	# QNAME to potentially broken nameservers. A lot of domains will not be
443	# resolvable when this option in enabled.
444	# This option only has effect when qname-minimisation is enabled.
445	# qname-minimisation-strict: no
446
447	# Aggressive NSEC uses the DNSSEC NSEC chain to synthesize NXDOMAIN
448	# and other denials, using information from previous NXDOMAINs answers.
449	# aggressive-nsec: yes
450
451	# Use 0x20-encoded random bits in the query to foil spoof attempts.
452	# This feature is an experimental implementation of draft dns-0x20.
453	# use-caps-for-id: no
454
455	# Domains (and domains in them) without support for dns-0x20 and
456	# the fallback fails because they keep sending different answers.
457	# caps-exempt: "licdn.com"
458	# caps-exempt: "senderbase.org"
459
460	# Enforce privacy of these addresses. Strips them away from answers.
461	# It may cause DNSSEC validation to additionally mark it as bogus.
462	# Protects against 'DNS Rebinding' (uses browser as network proxy).
463	# Only 'private-domain' and 'local-data' names are allowed to have
464	# these private addresses. No default.
465	# private-address: 10.0.0.0/8
466	# private-address: 172.16.0.0/12
467	# private-address: 192.168.0.0/16
468	# private-address: 169.254.0.0/16
469	# private-address: fd00::/8
470	# private-address: fe80::/10
471	# private-address: ::ffff:0:0/96
472
473	# Allow the domain (and its subdomains) to contain private addresses.
474	# local-data statements are allowed to contain private addresses too.
475	# private-domain: "example.com"
476
477	# If nonzero, unwanted replies are not only reported in statistics,
478	# but also a running total is kept per thread. If it reaches the
479	# threshold, a warning is printed and a defensive action is taken,
480	# the cache is cleared to flush potential poison out of it.
481	# A suggested value is 10000000, the default is 0 (turned off).
482	# unwanted-reply-threshold: 0
483
484	# Do not query the following addresses. No DNS queries are sent there.
485	# List one address per entry. List classless netblocks with /size,
486	# do-not-query-address: 127.0.0.1/8
487	# do-not-query-address: ::1
488
489	# if yes, the above default do-not-query-address entries are present.
490	# if no, localhost can be queried (for testing and debugging).
491	# do-not-query-localhost: yes
492
493	# if yes, perform prefetching of almost expired message cache entries.
494	# prefetch: no
495
496	# if yes, perform key lookups adjacent to normal lookups.
497	# prefetch-key: no
498
499	# deny queries of type ANY with an empty response.
500	# deny-any: no
501
502	# if yes, Unbound rotates RRSet order in response.
503	# rrset-roundrobin: yes
504
505	# if yes, Unbound doesn't insert authority/additional sections
506	# into response messages when those sections are not required.
507	# minimal-responses: yes
508
509	# true to disable DNSSEC lameness check in iterator.
510	# disable-dnssec-lame-check: no
511
512	# module configuration of the server. A string with identifiers
513	# separated by spaces. Syntax: "[dns64] [validator] iterator"
514	# most modules have to be listed at the beginning of the line,
515	# except cachedb(just before iterator), and python (at the beginning,
516	# or, just before the iterator).
517	# module-config: "validator iterator"
518
519	# File with trusted keys, kept uptodate using RFC5011 probes,
520	# initial file like trust-anchor-file, then it stores metadata.
521	# Use several entries, one per domain name, to track multiple zones.
522	#
523	# If you want to perform DNSSEC validation, run unbound-anchor before
524	# you start Unbound (i.e. in the system boot scripts).
525	# And then enable the auto-trust-anchor-file config item.
526	# Please note usage of unbound-anchor root anchor is at your own risk
527	# and under the terms of our LICENSE (see that file in the source).
528	# auto-trust-anchor-file: "@UNBOUND_ROOTKEY_FILE@"
529
530	# trust anchor signaling sends a RFC8145 key tag query after priming.
531	# trust-anchor-signaling: yes
532
533	# Root key trust anchor sentinel (draft-ietf-dnsop-kskroll-sentinel)
534	# root-key-sentinel: yes
535
536	# File with trusted keys for validation. Specify more than one file
537	# with several entries, one file per entry.
538	# Zone file format, with DS and DNSKEY entries.
539	# Note this gets out of date, use auto-trust-anchor-file please.
540	# trust-anchor-file: ""
541
542	# Trusted key for validation. DS or DNSKEY. specify the RR on a
543	# single line, surrounded by "". TTL is ignored. class is IN default.
544	# Note this gets out of date, use auto-trust-anchor-file please.
545	# (These examples are from August 2007 and may not be valid anymore).
546	# trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ=="
547	# trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A"
548
549	# File with trusted keys for validation. Specify more than one file
550	# with several entries, one file per entry. Like trust-anchor-file
551	# but has a different file format. Format is BIND-9 style format,
552	# the trusted-keys { name flag proto algo "key"; }; clauses are read.
553	# you need external update procedures to track changes in keys.
554	# trusted-keys-file: ""
555
556	# Ignore chain of trust. Domain is treated as insecure.
557	# domain-insecure: "example.com"
558
559	# Override the date for validation with a specific fixed date.
560	# Do not set this unless you are debugging signature inception
561	# and expiration. "" or "0" turns the feature off. -1 ignores date.
562	# val-override-date: ""
563
564	# The time to live for bogus data, rrsets and messages. This avoids
565	# some of the revalidation, until the time interval expires. in secs.
566	# val-bogus-ttl: 60
567
568	# The signature inception and expiration dates are allowed to be off
569	# by 10% of the signature lifetime (expir-incep) from our local clock.
570	# This leeway is capped with a minimum and a maximum.  In seconds.
571	# val-sig-skew-min: 3600
572	# val-sig-skew-max: 86400
573
574	# The maximum number the validator should restart validation with
575	# another authority in case of failed validation.
576	# val-max-restart: 5
577
578	# Should additional section of secure message also be kept clean of
579	# unsecure data. Useful to shield the users of this validator from
580	# potential bogus data in the additional section. All unsigned data
581	# in the additional section is removed from secure messages.
582	# val-clean-additional: yes
583
584	# Turn permissive mode on to permit bogus messages. Thus, messages
585	# for which security checks failed will be returned to clients,
586	# instead of SERVFAIL. It still performs the security checks, which
587	# result in interesting log files and possibly the AD bit in
588	# replies if the message is found secure. The default is off.
589	# val-permissive-mode: no
590
591	# Ignore the CD flag in incoming queries and refuse them bogus data.
592	# Enable it if the only clients of Unbound are legacy servers (w2008)
593	# that set CD but cannot validate themselves.
594	# ignore-cd-flag: no
595
596	# Serve expired responses from cache, with serve-expired-reply-ttl in
597	# the response, and then attempt to fetch the data afresh.
598	# serve-expired: no
599	#
600	# Limit serving of expired responses to configured seconds after
601	# expiration. 0 disables the limit.
602	# serve-expired-ttl: 0
603	#
604	# Set the TTL of expired records to the serve-expired-ttl value after a
605	# failed attempt to retrieve the record from upstream. This makes sure
606	# that the expired records will be served as long as there are queries
607	# for it.
608	# serve-expired-ttl-reset: no
609	#
610	# TTL value to use when replying with expired data.
611	# serve-expired-reply-ttl: 30
612	#
613	# Time in milliseconds before replying to the client with expired data.
614	# This essentially enables the serve-stale behavior as specified in
615	# RFC 8767 that first tries to resolve before
616	# immediately responding with expired data.  0 disables this behavior.
617	# A recommended value is 1800.
618	# serve-expired-client-timeout: 0
619
620	# Return the original TTL as received from the upstream name server rather
621	# than the decrementing TTL as stored in the cache.  Enabling this feature
622	# does not impact cache expiry, it only changes the TTL Unbound embeds in
623	# responses to queries. Note that enabling this feature implicitly disables
624	# enforcement of the configured minimum and maximum TTL.
625	# serve-original-ttl: no
626
627	# Have the validator log failed validations for your diagnosis.
628	# 0: off. 1: A line per failed user query. 2: With reason and bad IP.
629	# val-log-level: 0
630
631	# It is possible to configure NSEC3 maximum iteration counts per
632	# keysize. Keep this table very short, as linear search is done.
633	# A message with an NSEC3 with larger count is marked insecure.
634	# List in ascending order the keysize and count values.
635	# val-nsec3-keysize-iterations: "1024 150 2048 150 4096 150"
636
637	# if enabled, ZONEMD verification failures do not block the zone.
638	# zonemd-permissive-mode: no
639
640	# instruct the auto-trust-anchor-file probing to add anchors after ttl.
641	# add-holddown: 2592000 # 30 days
642
643	# instruct the auto-trust-anchor-file probing to del anchors after ttl.
644	# del-holddown: 2592000 # 30 days
645
646	# auto-trust-anchor-file probing removes missing anchors after ttl.
647	# If the value 0 is given, missing anchors are not removed.
648	# keep-missing: 31622400 # 366 days
649
650	# debug option that allows very small holddown times for key rollover,
651	# otherwise the RFC mandates probe intervals must be at least 1 hour.
652	# permit-small-holddown: no
653
654	# the amount of memory to use for the key cache.
655	# plain value in bytes or you can append k, m or G. default is "4Mb".
656	# key-cache-size: 4m
657
658	# the number of slabs to use for the key cache.
659	# the number of slabs must be a power of 2.
660	# more slabs reduce lock contention, but fragment memory usage.
661	# key-cache-slabs: 4
662
663	# the amount of memory to use for the negative cache.
664	# plain value in bytes or you can append k, m or G. default is "1Mb".
665	# neg-cache-size: 1m
666
667	# By default, for a number of zones a small default 'nothing here'
668	# reply is built-in.  Query traffic is thus blocked.  If you
669	# wish to serve such zone you can unblock them by uncommenting one
670	# of the nodefault statements below.
671	# You may also have to use domain-insecure: zone to make DNSSEC work,
672	# unless you have your own trust anchors for this zone.
673	# local-zone: "localhost." nodefault
674	# local-zone: "127.in-addr.arpa." nodefault
675	# 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
676	# local-zone: "home.arpa." nodefault
677	# local-zone: "onion." nodefault
678	# local-zone: "test." nodefault
679	# local-zone: "invalid." nodefault
680	# local-zone: "10.in-addr.arpa." nodefault
681	# local-zone: "16.172.in-addr.arpa." nodefault
682	# local-zone: "17.172.in-addr.arpa." nodefault
683	# local-zone: "18.172.in-addr.arpa." nodefault
684	# local-zone: "19.172.in-addr.arpa." nodefault
685	# local-zone: "20.172.in-addr.arpa." nodefault
686	# local-zone: "21.172.in-addr.arpa." nodefault
687	# local-zone: "22.172.in-addr.arpa." nodefault
688	# local-zone: "23.172.in-addr.arpa." nodefault
689	# local-zone: "24.172.in-addr.arpa." nodefault
690	# local-zone: "25.172.in-addr.arpa." nodefault
691	# local-zone: "26.172.in-addr.arpa." nodefault
692	# local-zone: "27.172.in-addr.arpa." nodefault
693	# local-zone: "28.172.in-addr.arpa." nodefault
694	# local-zone: "29.172.in-addr.arpa." nodefault
695	# local-zone: "30.172.in-addr.arpa." nodefault
696	# local-zone: "31.172.in-addr.arpa." nodefault
697	# local-zone: "168.192.in-addr.arpa." nodefault
698	# local-zone: "0.in-addr.arpa." nodefault
699	# local-zone: "254.169.in-addr.arpa." nodefault
700	# local-zone: "2.0.192.in-addr.arpa." nodefault
701	# local-zone: "100.51.198.in-addr.arpa." nodefault
702	# local-zone: "113.0.203.in-addr.arpa." nodefault
703	# local-zone: "255.255.255.255.in-addr.arpa." nodefault
704	# 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
705	# local-zone: "d.f.ip6.arpa." nodefault
706	# local-zone: "8.e.f.ip6.arpa." nodefault
707	# local-zone: "9.e.f.ip6.arpa." nodefault
708	# local-zone: "a.e.f.ip6.arpa." nodefault
709	# local-zone: "b.e.f.ip6.arpa." nodefault
710	# local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault
711	# And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa.
712
713	# Add example.com into ipset
714	# local-zone: "example.com" ipset
715
716	# If Unbound is running service for the local host then it is useful
717	# to perform lan-wide lookups to the upstream, and unblock the
718	# long list of local-zones above.  If this Unbound is a dns server
719	# for a network of computers, disabled is better and stops information
720	# leakage of local lan information.
721	# unblock-lan-zones: no
722
723	# The insecure-lan-zones option disables validation for
724	# these zones, as if they were all listed as domain-insecure.
725	# insecure-lan-zones: no
726
727	# a number of locally served zones can be configured.
728	# 	local-zone: <zone> <type>
729	# 	local-data: "<resource record string>"
730	# o deny serves local data (if any), else, drops queries.
731	# o refuse serves local data (if any), else, replies with error.
732	# o static serves local data, else, nxdomain or nodata answer.
733	# o transparent gives local data, but resolves normally for other names
734	# o redirect serves the zone data for any subdomain in the zone.
735	# o nodefault can be used to normally resolve AS112 zones.
736	# o typetransparent resolves normally for other types and other names
737	# o inform acts like transparent, but logs client IP address
738	# o inform_deny drops queries and logs client IP address
739	# o inform_redirect redirects queries and logs client IP address
740	# o always_transparent, always_refuse, always_nxdomain, always_nodata,
741	#   always_deny resolve in that way but ignore local data for
742	#   that name
743	# o always_null returns 0.0.0.0 or ::0 for any name in the zone.
744	# o noview breaks out of that view towards global local-zones.
745	#
746	# defaults are localhost address, reverse for 127.0.0.1 and ::1
747	# and nxdomain for AS112 zones. If you configure one of these zones
748	# the default content is omitted, or you can omit it with 'nodefault'.
749	#
750	# If you configure local-data without specifying local-zone, by
751	# default a transparent local-zone is created for the data.
752	#
753	# You can add locally served data with
754	# local-zone: "local." static
755	# local-data: "mycomputer.local. IN A 192.0.2.51"
756	# local-data: 'mytext.local TXT "content of text record"'
757	#
758	# You can override certain queries with
759	# local-data: "adserver.example.com A 127.0.0.1"
760	#
761	# You can redirect a domain to a fixed address with
762	# (this makes example.com, www.example.com, etc, all go to 192.0.2.3)
763	# local-zone: "example.com" redirect
764	# local-data: "example.com A 192.0.2.3"
765	#
766	# Shorthand to make PTR records, "IPv4 name" or "IPv6 name".
767	# You can also add PTR records using local-data directly, but then
768	# you need to do the reverse notation yourself.
769	# local-data-ptr: "192.0.2.3 www.example.com"
770
771	# tag a localzone with a list of tag names (in "" with spaces between)
772	# local-zone-tag: "example.com" "tag2 tag3"
773
774	# add a netblock specific override to a localzone, with zone type
775	# local-zone-override: "example.com" 192.0.2.0/24 refuse
776
777	# service clients over TLS (on the TCP sockets) with plain DNS inside
778	# the TLS stream, and over HTTPS using HTTP/2 as specified in RFC8484.
779	# Give the certificate to use and private key.
780	# default is "" (disabled).  requires restart to take effect.
781	# tls-service-key: "path/to/privatekeyfile.key"
782	# tls-service-pem: "path/to/publiccertfile.pem"
783	# tls-port: 853
784	# https-port: 443
785
786	# cipher setting for TLSv1.2
787	# 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"
788	# cipher setting for TLSv1.3
789	# 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"
790
791	# Pad responses to padded queries received over TLS
792	# pad-responses: yes
793
794	# Padded responses will be padded to the closest multiple of this size.
795	# pad-responses-block-size: 468
796
797	# Use the SNI extension for TLS connections.  Default is yes.
798	# Changing the value requires a reload.
799	# tls-use-sni: yes
800
801	# Add the secret file for TLS Session Ticket.
802	# Secret file must be 80 bytes of random data.
803	# First key use to encrypt and decrypt TLS session tickets.
804	# Other keys use to decrypt only.
805	# requires restart to take effect.
806	# tls-session-ticket-keys: "path/to/secret_file1"
807	# tls-session-ticket-keys: "path/to/secret_file2"
808
809	# request upstream over TLS (with plain DNS inside the TLS stream).
810	# Default is no.  Can be turned on and off with unbound-control.
811	# tls-upstream: no
812
813	# Certificates used to authenticate connections made upstream.
814	# tls-cert-bundle: ""
815
816	# Add system certs to the cert bundle, from the Windows Cert Store
817	# tls-win-cert: no
818	# and on other systems, the default openssl certificates
819	# tls-system-cert: no
820
821	# Pad queries over TLS upstreams
822	# pad-queries: yes
823
824	# Padded queries will be padded to the closest multiple of this size.
825	# pad-queries-block-size: 128
826
827	# Also serve tls on these port numbers (eg. 443, ...), by listing
828	# tls-additional-port: portno for each of the port numbers.
829
830	# HTTP endpoint to provide DNS-over-HTTPS service on.
831	# http-endpoint: "/dns-query"
832
833	# HTTP/2 SETTINGS_MAX_CONCURRENT_STREAMS value to use.
834	# http-max-streams: 100
835
836	# Maximum number of bytes used for all HTTP/2 query buffers.
837	# http-query-buffer-size: 4m
838
839	# Maximum number of bytes used for all HTTP/2 response buffers.
840	# http-response-buffer-size: 4m
841
842	# Set TCP_NODELAY socket option on sockets used for DNS-over-HTTPS
843	# service.
844	# http-nodelay: yes
845
846	# Disable TLS for DNS-over-HTTP downstream service.
847	# http-notls-downstream: no
848
849	# DNS64 prefix. Must be specified when DNS64 is use.
850	# Enable dns64 in module-config.  Used to synthesize IPv6 from IPv4.
851	# dns64-prefix: 64:ff9b::0/96
852
853	# DNS64 ignore AAAA records for these domains and use A instead.
854	# dns64-ignore-aaaa: "example.com"
855
856	# ratelimit for uncached, new queries, this limits recursion effort.
857	# ratelimiting is experimental, and may help against randomqueryflood.
858	# if 0(default) it is disabled, otherwise state qps allowed per zone.
859	# ratelimit: 0
860
861	# ratelimits are tracked in a cache, size in bytes of cache (or k,m).
862	# ratelimit-size: 4m
863	# ratelimit cache slabs, reduces lock contention if equal to cpucount.
864	# ratelimit-slabs: 4
865
866	# 0 blocks when ratelimited, otherwise let 1/xth traffic through
867	# ratelimit-factor: 10
868
869	# Aggressive rate limit when the limit is reached and until demand has
870	# decreased in a 2 second rate window.
871	# ratelimit-backoff: no
872
873	# override the ratelimit for a specific domain name.
874	# give this setting multiple times to have multiple overrides.
875	# ratelimit-for-domain: example.com 1000
876	# override the ratelimits for all domains below a domain name
877	# can give this multiple times, the name closest to the zone is used.
878	# ratelimit-below-domain: com 1000
879
880	# global query ratelimit for all ip addresses.
881	# feature is experimental.
882	# if 0(default) it is disabled, otherwise states qps allowed per ip address
883	# ip-ratelimit: 0
884
885	# ip ratelimits are tracked in a cache, size in bytes of cache (or k,m).
886	# ip-ratelimit-size: 4m
887	# ip ratelimit cache slabs, reduces lock contention if equal to cpucount.
888	# ip-ratelimit-slabs: 4
889
890	# 0 blocks when ip is ratelimited, otherwise let 1/xth traffic through
891	# ip-ratelimit-factor: 10
892
893	# Aggressive rate limit when the limit is reached and until demand has
894	# decreased in a 2 second rate window.
895	# ip-ratelimit-backoff: no
896
897	# Limit the number of connections simultaneous from a netblock
898	# tcp-connection-limit: 192.0.2.0/24 12
899
900	# select from the fastest servers this many times out of 1000. 0 means
901	# the fast server select is disabled. prefetches are not sped up.
902	# fast-server-permil: 0
903	# the number of servers that will be used in the fast server selection.
904	# fast-server-num: 3
905
906	# Enable to attach Extended DNS Error codes (RFC8914) to responses.
907	# ede: no
908
909	# Enable to attach an Extended DNS Error (RFC8914) Code 3 - Stale
910	# Answer as EDNS0 option to expired responses.
911	# Note that the ede option above needs to be enabled for this to work.
912	# ede-serve-expired: no
913
914	# Specific options for ipsecmod. Unbound needs to be configured with
915	# --enable-ipsecmod for these to take effect.
916	#
917	# Enable or disable ipsecmod (it still needs to be defined in
918	# module-config above). Can be used when ipsecmod needs to be
919	# enabled/disabled via remote-control(below).
920	# ipsecmod-enabled: yes
921	#
922	# Path to executable external hook. It must be defined when ipsecmod is
923	# listed in module-config (above).
924	# ipsecmod-hook: "./my_executable"
925	#
926	# When enabled Unbound will reply with SERVFAIL if the return value of
927	# the ipsecmod-hook is not 0.
928	# ipsecmod-strict: no
929	#
930	# Maximum time to live (TTL) for cached A/AAAA records with IPSECKEY.
931	# ipsecmod-max-ttl: 3600
932	#
933	# Reply with A/AAAA even if the relevant IPSECKEY is bogus. Mainly used for
934	# testing.
935	# ipsecmod-ignore-bogus: no
936	#
937	# Domains for which ipsecmod will be triggered. If not defined (default)
938	# all domains are treated as being allowed.
939	# ipsecmod-allow: "example.com"
940	# ipsecmod-allow: "nlnetlabs.nl"
941
942	# Timeout for REUSE entries in milliseconds.
943	# tcp-reuse-timeout: 60000
944	# Max number of queries on a reuse connection.
945	# max-reuse-tcp-queries: 200
946	# Timeout in milliseconds for TCP queries to auth servers.
947	# tcp-auth-query-timeout: 3000
948
949
950# Python config section. To enable:
951# o use --with-pythonmodule to configure before compiling.
952# o list python in the module-config string (above) to enable.
953#   It can be at the start, it gets validated results, or just before
954#   the iterator and process before DNSSEC validation.
955# o and give a python-script to run.
956python:
957	# Script file to load
958	# python-script: "@UNBOUND_SHARE_DIR@/ubmodule-tst.py"
959
960# Dynamic library config section. To enable:
961# o use --with-dynlibmodule to configure before compiling.
962# o list dynlib in the module-config string (above) to enable.
963#   It can be placed anywhere, the dynlib module is only a very thin wrapper
964#   to load modules dynamically.
965# o and give a dynlib-file to run. If more than one dynlib entry is listed in
966#   the module-config then you need one dynlib-file per instance.
967dynlib:
968	# Script file to load
969	# dynlib-file: "@UNBOUND_SHARE_DIR@/dynlib.so"
970
971# Remote control config section.
972remote-control:
973	# Enable remote control with unbound-control(8) here.
974	# set up the keys and certificates with unbound-control-setup.
975	# control-enable: no
976
977	# what interfaces are listened to for remote control.
978	# give 0.0.0.0 and ::0 to listen to all interfaces.
979	# set to an absolute path to use a unix local name pipe, certificates
980	# are not used for that, so key and cert files need not be present.
981	# control-interface: 127.0.0.1
982	# control-interface: ::1
983
984	# port number for remote control operations.
985	# control-port: 8953
986
987	# for localhost, you can disable use of TLS by setting this to "no"
988	# For local sockets this option is ignored, and TLS is not used.
989	# control-use-cert: "yes"
990
991	# Unbound server key file.
992	# server-key-file: "@UNBOUND_RUN_DIR@/unbound_server.key"
993
994	# Unbound server certificate file.
995	# server-cert-file: "@UNBOUND_RUN_DIR@/unbound_server.pem"
996
997	# unbound-control key file.
998	# control-key-file: "@UNBOUND_RUN_DIR@/unbound_control.key"
999
1000	# unbound-control certificate file.
1001	# control-cert-file: "@UNBOUND_RUN_DIR@/unbound_control.pem"
1002
1003# Stub zones.
1004# Create entries like below, to make all queries for 'example.com' and
1005# 'example.org' go to the given list of nameservers. list zero or more
1006# nameservers by hostname or by ipaddress. If you set stub-prime to yes,
1007# the list is treated as priming hints (default is no).
1008# With stub-first yes, it attempts without the stub if it fails.
1009# Consider adding domain-insecure: name and local-zone: name nodefault
1010# to the server: section if the stub is a locally served zone.
1011# stub-zone:
1012#	name: "example.com"
1013#	stub-addr: 192.0.2.68
1014#	stub-prime: no
1015#	stub-first: no
1016#	stub-tcp-upstream: no
1017#	stub-tls-upstream: no
1018#	stub-no-cache: no
1019# stub-zone:
1020#	name: "example.org"
1021#	stub-host: ns.example.com.
1022
1023# Forward zones
1024# Create entries like below, to make all queries for 'example.com' and
1025# 'example.org' go to the given list of servers. These servers have to handle
1026# recursion to other nameservers. List zero or more nameservers by hostname
1027# or by ipaddress. Use an entry with name "." to forward all queries.
1028# If you enable forward-first, it attempts without the forward if it fails.
1029# forward-zone:
1030# 	name: "example.com"
1031# 	forward-addr: 192.0.2.68
1032# 	forward-addr: 192.0.2.73@5355  # forward to port 5355.
1033# 	forward-first: no
1034# 	forward-tcp-upstream: no
1035# 	forward-tls-upstream: no
1036#	forward-no-cache: no
1037# forward-zone:
1038# 	name: "example.org"
1039# 	forward-host: fwd.example.com
1040
1041# Authority zones
1042# The data for these zones is kept locally, from a file or downloaded.
1043# The data can be served to downstream clients, or used instead of the
1044# upstream (which saves a lookup to the upstream).  The first example
1045# has a copy of the root for local usage.  The second serves example.org
1046# authoritatively.  zonefile: reads from file (and writes to it if you also
1047# download it), primary: fetches with AXFR and IXFR, or url to zonefile.
1048# With allow-notify: you can give additional (apart from primaries) sources of
1049# notifies.
1050# auth-zone:
1051#	name: "."
1052#	primary: 199.9.14.201         # b.root-servers.net
1053#	primary: 192.33.4.12          # c.root-servers.net
1054#	primary: 199.7.91.13          # d.root-servers.net
1055#	primary: 192.5.5.241          # f.root-servers.net
1056#	primary: 192.112.36.4         # g.root-servers.net
1057#	primary: 193.0.14.129         # k.root-servers.net
1058#	primary: 192.0.47.132         # xfr.cjr.dns.icann.org
1059#	primary: 192.0.32.132         # xfr.lax.dns.icann.org
1060#	primary: 2001:500:200::b      # b.root-servers.net
1061#	primary: 2001:500:2::c        # c.root-servers.net
1062#	primary: 2001:500:2d::d       # d.root-servers.net
1063#	primary: 2001:500:2f::f       # f.root-servers.net
1064#	primary: 2001:500:12::d0d     # g.root-servers.net
1065#	primary: 2001:7fd::1          # k.root-servers.net
1066#	primary: 2620:0:2830:202::132 # xfr.cjr.dns.icann.org
1067#	primary: 2620:0:2d0:202::132  # xfr.lax.dns.icann.org
1068#	fallback-enabled: yes
1069#	for-downstream: no
1070#	for-upstream: yes
1071# auth-zone:
1072#	name: "example.org"
1073#	for-downstream: yes
1074#	for-upstream: yes
1075#	zonemd-check: no
1076#	zonemd-reject-absence: no
1077#	zonefile: "example.org.zone"
1078
1079# Views
1080# Create named views. Name must be unique. Map views to requests using
1081# the access-control-view option. Views can contain zero or more local-zone
1082# and local-data options. Options from matching views will override global
1083# options. Global options will be used if no matching view is found.
1084# With view-first yes, it will try to answer using the global local-zone and
1085# local-data elements if there is no view specific match.
1086# view:
1087#	name: "viewname"
1088#	local-zone: "example.com" redirect
1089#	local-data: "example.com A 192.0.2.3"
1090#	local-data-ptr: "192.0.2.3 www.example.com"
1091#	view-first: no
1092# view:
1093#	name: "anotherview"
1094#	local-zone: "example.com" refuse
1095
1096# DNSCrypt
1097# To enable, use --enable-dnscrypt to configure before compiling.
1098# Caveats:
1099# 1. the keys/certs cannot be produced by Unbound. You can use dnscrypt-wrapper
1100#   for this: https://github.com/cofyc/dnscrypt-wrapper/blob/master/README.md#usage
1101# 2. dnscrypt channel attaches to an interface. you MUST set interfaces to
1102#   listen on `dnscrypt-port` with the follo0wing snippet:
1103# server:
1104#     interface: 0.0.0.0@443
1105#     interface: ::0@443
1106#
1107# Finally, `dnscrypt` config has its own section.
1108# dnscrypt:
1109#     dnscrypt-enable: yes
1110#     dnscrypt-port: 443
1111#     dnscrypt-provider: 2.dnscrypt-cert.example.com.
1112#     dnscrypt-secret-key: /path/unbound-conf/keys1/1.key
1113#     dnscrypt-secret-key: /path/unbound-conf/keys2/1.key
1114#     dnscrypt-provider-cert: /path/unbound-conf/keys1/1.cert
1115#     dnscrypt-provider-cert: /path/unbound-conf/keys2/1.cert
1116
1117# CacheDB
1118# External backend DB as auxiliary cache.
1119# To enable, use --enable-cachedb to configure before compiling.
1120# Specify the backend name
1121# (default is "testframe", which has no use other than for debugging and
1122# testing) and backend-specific options.  The 'cachedb' module must be
1123# included in module-config, just before the iterator module.
1124# cachedb:
1125#     backend: "testframe"
1126#     # secret seed string to calculate hashed keys
1127#     secret-seed: "default"
1128#
1129#     # For "redis" backend:
1130#     # (to enable, use --with-libhiredis to configure before compiling)
1131#     # redis server's IP address or host name
1132#     redis-server-host: 127.0.0.1
1133#     # redis server's TCP port
1134#     redis-server-port: 6379
1135#     # timeout (in ms) for communication with the redis server
1136#     redis-timeout: 100
1137#     # set timeout on redis records based on DNS response TTL
1138#     redis-expire-records: no
1139
1140# IPSet
1141# Add specify domain into set via ipset.
1142# To enable:
1143# o use --enable-ipset to configure before compiling;
1144# o Unbound then needs to run as root user.
1145# ipset:
1146#     # set name for ip v4 addresses
1147#     name-v4: "list-v4"
1148#     # set name for ip v6 addresses
1149#     name-v6: "list-v6"
1150#
1151
1152# Dnstap logging support, if compiled in by using --enable-dnstap to configure.
1153# To enable, set the dnstap-enable to yes and also some of
1154# dnstap-log-..-messages to yes.  And select an upstream log destination, by
1155# socket path, TCP or TLS destination.
1156# dnstap:
1157# 	dnstap-enable: no
1158# 	# if set to yes frame streams will be used in bidirectional mode
1159# 	dnstap-bidirectional: yes
1160# 	dnstap-socket-path: "@DNSTAP_SOCKET_PATH@"
1161# 	# if "" use the unix socket in dnstap-socket-path, otherwise,
1162# 	# set it to "IPaddress[@port]" of the destination.
1163# 	dnstap-ip: ""
1164# 	# if set to yes if you want to use TLS to dnstap-ip, no for TCP.
1165# 	dnstap-tls: yes
1166# 	# name for authenticating the upstream server. or "" disabled.
1167# 	dnstap-tls-server-name: ""
1168# 	# if "", it uses the cert bundle from the main Unbound config.
1169# 	dnstap-tls-cert-bundle: ""
1170# 	# key file for client authentication, or "" disabled.
1171# 	dnstap-tls-client-key-file: ""
1172# 	# cert file for client authentication, or "" disabled.
1173# 	dnstap-tls-client-cert-file: ""
1174# 	dnstap-send-identity: no
1175# 	dnstap-send-version: no
1176# 	# if "" it uses the hostname.
1177# 	dnstap-identity: ""
1178# 	# if "" it uses the package version.
1179# 	dnstap-version: ""
1180# 	dnstap-log-resolver-query-messages: no
1181# 	dnstap-log-resolver-response-messages: no
1182# 	dnstap-log-client-query-messages: no
1183# 	dnstap-log-client-response-messages: no
1184# 	dnstap-log-forwarder-query-messages: no
1185# 	dnstap-log-forwarder-response-messages: no
1186
1187# Response Policy Zones
1188# RPZ policies. Applied in order of configuration. QNAME, Response IP
1189# Address, nsdname, nsip and clientip triggers are supported. Supported
1190# actions are: NXDOMAIN, NODATA, PASSTHRU, DROP, Local Data, tcp-only
1191# and drop.  Policies can be loaded from a file, or using zone
1192# transfer, or using HTTP. The respip module needs to be added
1193# to the module-config, e.g.: module-config: "respip validator iterator".
1194# rpz:
1195#     name: "rpz.example.com"
1196#     zonefile: "rpz.example.com"
1197#     primary: 192.0.2.0
1198#     allow-notify: 192.0.2.0/32
1199#     url: http://www.example.com/rpz.example.org.zone
1200#     rpz-action-override: cname
1201#     rpz-cname-override: www.example.org
1202#     rpz-log: yes
1203#     rpz-log-name: "example policy"
1204#     rpz-signal-nxdomain-ra: no
1205#     for-downstream: no
1206#     tags: "example"
1207