Adding upstream version 3.3.4.upstream/3.3.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2826 insertions, 0 deletions

diff --git a/doc/man/knot.conf.5in b/doc/man/knot.conf.5in
new file mode 100644
index 0000000..72f0a4a
--- /dev/null
+++ b/doc/man/knot.conf.5in
@@ -0,0 +1,2826 @@
+.\" Man page generated from reStructuredText.
+.
+.
+.nr rst2man-indent-level 0
+.
+.de1 rstReportMargin
+\\$1 \\n[an-margin]
+level \\n[rst2man-indent-level]
+level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
+-
+\\n[rst2man-indent0]
+\\n[rst2man-indent1]
+\\n[rst2man-indent2]
+..
+.de1 INDENT
+.\" .rstReportMargin pre:
+. RS \\$1
+. nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin]
+. nr rst2man-indent-level +1
+.\" .rstReportMargin post:
+..
+.de UNINDENT
+. RE
+.\" indent \\n[an-margin]
+.\" old: \\n[rst2man-indent\\n[rst2man-indent-level]]
+.nr rst2man-indent-level -1
+.\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
+.in \\n[rst2man-indent\\n[rst2man-indent-level]]u
+..
+.TH "KNOT.CONF" "5" "@RELEASE_DATE@" "@VERSION@" "Knot DNS"
+.SH NAME
+knot.conf \- Knot DNS configuration file
+.SH DESCRIPTION
+.sp
+Configuration files for Knot DNS use simplified YAML format. Simplified means
+that not all of the features are supported.
+.sp
+For the description of configuration items, we have to declare a meaning of
+the following symbols:
+.INDENT 0.0
+.IP \(bu 2
+\fBINT\fP – Integer
+.IP \(bu 2
+\fBSTR\fP – Textual string
+.IP \(bu 2
+\fBHEXSTR\fP – Hexadecimal string (with \fB0x\fP prefix)
+.IP \(bu 2
+\fBBOOL\fP – Boolean value (\fBon\fP/\fBoff\fP or \fBtrue\fP/\fBfalse\fP)
+.IP \(bu 2
+\fBTIME\fP – Number of seconds, an integer with possible time multiplier suffix
+(\fBs\fP ~ 1, \fBm\fP ~ 60, \fBh\fP ~ 3600 or \fBd\fP ~ 24 * 3600)
+.IP \(bu 2
+\fBSIZE\fP – Number of bytes, an integer with possible size multiplier suffix
+(\fBB\fP ~ 1, \fBK\fP ~ 1024, \fBM\fP ~ 1024^2 or \fBG\fP ~ 1024^3)
+.IP \(bu 2
+\fBBASE64\fP – Base64 encoded string
+.IP \(bu 2
+\fBADDR\fP – IPv4 or IPv6 address
+.IP \(bu 2
+\fBDNAME\fP – Domain name
+.IP \(bu 2
+\fB\&...\fP – Multi\-valued item, order of the values is preserved
+.IP \(bu 2
+\fB[\fP \fB]\fP – Optional value
+.IP \(bu 2
+\fB|\fP – Choice
+.UNINDENT
+.sp
+The configuration consists of several fixed sections and optional module
+sections. There are 16 fixed sections (\fBmodule\fP, \fBserver\fP, \fBxdp\fP, \fBcontrol\fP,
+\fBlog\fP, \fBstatistics\fP, \fBdatabase\fP, \fBkeystore\fP, \fBkey\fP, \fBremote\fP,
+\fBremotes\fP, \fBacl\fP, \fBsubmission\fP, \fBpolicy\fP, \fBtemplate\fP, \fBzone\fP).
+Module sections are prefixed with the \fBmod\-\fP prefix (e.g. \fBmod\-stats\fP).
+.sp
+Most of the sections (e.g. \fBzone\fP) are sequences of settings blocks. Each
+settings block begins with a unique identifier, which can be used as a reference
+from other sections (such an identifier must be defined in advance).
+.sp
+A multi\-valued item can be specified either as a YAML sequence:
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+address: [10.0.0.1, 10.0.0.2]
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.sp
+or as more single\-valued items each on an extra line:
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+address: 10.0.0.1
+address: 10.0.0.2
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.sp
+If an item value contains spaces or other special characters, it is necessary
+to enclose such a value within double quotes \fB\(dq\fP \fB\(dq\fP\&.
+.sp
+If not specified otherwise, an item representing a file or a directory path may
+be defined either as an absolute path (starting with \fB/\fP), or a path relative
+to the same directory as the default value of the item.
+.SH COMMENTS
+.sp
+A comment begins with a \fB#\fP character and is ignored during processing.
+Also each configuration section or sequence block allows a permanent
+comment using the \fBcomment\fP item which is stored in the server beside the
+configuration.
+.SH INCLUDING CONFIGURATION
+.sp
+Another configuration file or files, matching a pattern, can be included at
+the top level in the current file.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+include: STR
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS include
+.sp
+A path or a matching pattern specifying one or more files that are included
+at the place of the include option position in the configuration.
+If the path is not absolute, then it is considered to be relative to the
+current file. The pattern can be an arbitrary string meeting POSIX \fIglob\fP
+requirements, e.g. dir/*.conf. Matching files are processed in sorted order.
+.sp
+\fIDefault:\fP not set
+.SH CLEARING CONFIGURATION SECTIONS
+.sp
+It\(aqs possible to clear specified configuration sections at given phases
+of the configuration parsing.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+clear: STR
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS clear
+.sp
+A matching pattern specifying configuration sections that are cleared when
+this item is parsed. This allows overriding of existing configuration
+in the configuration database when including a configuration file or
+ensures that some configuration wasn\(aqt specified in previous includes.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+For the pattern matching the POSIX function
+\fI\%fnmatch()\fP
+is used. On Linux, the GNU extension
+\fI\%FNM_EXTMATCH\fP
+is enabled, which allows extended pattern matching.
+Examples:
+.INDENT 0.0
+.IP \(bu 2
+\fBclear: zone\fP – Clears the \fBzone\fP section.
+.IP \(bu 2
+\fBclear: mod\-*\fP – Clears all module sections.
+.IP \(bu 2
+\fBclear: \(dq[!z]*\(dq\fP – Clears all sections not beginning with letter \fBz\fP\&.
+.IP \(bu 2
+\fBclear: !(zone)\fP – (GNU only) Clears all sections except the \fBzone\fP one.
+.IP \(bu 2
+\fBclear: @(zone|template)\fP – (GNU only) Clears the \fBzone\fP and \fBtemplate\fP sections.
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SH MODULE SECTION
+.sp
+Dynamic modules loading configuration.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If configured with non\-empty \fB\-\-with\-moduledir=path\fP parameter, all
+shared modules in this directory will be automatically loaded.
+.UNINDENT
+.UNINDENT
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+module:
+  \- id: STR
+    file: STR
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A module identifier in the form of the \fBmod\-\fP prefix and module name suffix.
+.SS file
+.sp
+A path to a shared library file with the module implementation.
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+If the path is not absolute, the library is searched in the set of
+system directories. See \fBman dlopen\fP for more details.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB${libdir}/knot/modules\-${version}\fP/module_name.so
+(or \fB${path}\fP/module_name.so if configured with \fB\-\-with\-moduledir=path\fP)
+.SH SERVER SECTION
+.sp
+General options related to the server.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+server:
+    identity: [STR]
+    version: [STR]
+    nsid: [STR|HEXSTR]
+    rundir: STR
+    user: STR[:STR]
+    pidfile: STR
+    udp\-workers: INT
+    tcp\-workers: INT
+    background\-workers: INT
+    async\-start: BOOL
+    tcp\-idle\-timeout: TIME
+    tcp\-io\-timeout: INT
+    tcp\-remote\-io\-timeout: INT
+    tcp\-max\-clients: INT
+    tcp\-reuseport: BOOL
+    tcp\-fastopen: BOOL
+    quic\-max\-clients: INT
+    quic\-outbuf\-max\-size: SIZE
+    quic\-idle\-close\-timeout: TIME
+    remote\-pool\-limit: INT
+    remote\-pool\-timeout: TIME
+    remote\-retry\-delay: TIME
+    socket\-affinity: BOOL
+    udp\-max\-payload: SIZE
+    udp\-max\-payload\-ipv4: SIZE
+    udp\-max\-payload\-ipv6: SIZE
+    key\-file: STR
+    cert\-file: STR
+    edns\-client\-subnet: BOOL
+    answer\-rotation: BOOL
+    automatic\-acl: BOOL
+    proxy\-allowlist: ADDR[/INT] | ADDR\-ADDR ...
+    dbus\-event: none | running | zone\-updated | ksk\-submission | dnssec\-invalid ...
+    dbus\-init\-delay: TIME
+    listen: ADDR[@INT] | STR ...
+    listen\-quic: ADDR[@INT] ...
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.sp
+\fBCAUTION:\fP
+.INDENT 0.0
+.INDENT 3.5
+When you change configuration parameters dynamically or via configuration file
+reload, some parameters in the Server section require restarting the Knot server
+so that the changes take effect. See below for the details.
+.UNINDENT
+.UNINDENT
+.SS identity
+.sp
+An identity of the server returned in the response to the query for TXT
+record \fBid.server.\fP or \fBhostname.bind.\fP in the CHAOS class (\fI\%RFC 4892\fP).
+Set to an empty value to disable.
+.sp
+\fIDefault:\fP FQDN hostname
+.SS version
+.sp
+A version of the server software returned in the response to the query
+for TXT record \fBversion.server.\fP or \fBversion.bind.\fP in the CHAOS
+class (\fI\%RFC 4892\fP). Set to an empty value to disable.
+.sp
+\fIDefault:\fP server version
+.SS nsid
+.sp
+A DNS name server identifier (\fI\%RFC 5001\fP). Set to an empty value to disable.
+.sp
+\fIDefault:\fP FQDN hostname at the moment of the daemon start
+.SS rundir
+.sp
+A path for storing run\-time data (PID file, unix sockets, etc.). A non\-absolute
+path is relative to the \fI\%knotd\fP startup directory.
+.sp
+Depending on the usage of this parameter, its change may require restart of the Knot
+server to take effect.
+.sp
+\fIDefault:\fP \fB${localstatedir}/run/knot\fP (configured with \fB\-\-with\-rundir=path\fP)
+.SS user
+.sp
+A system user with an optional system group (\fBuser:group\fP) under which the
+server is run after starting and binding to interfaces. Linux capabilities
+are employed if supported.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBroot:root\fP
+.SS pidfile
+.sp
+A PID file \fI\%location\fP\&.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fI\%rundir\fP\fB/knot.pid\fP
+.SS udp\-workers
+.sp
+A number of UDP workers (threads) used to process incoming queries
+over UDP.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP equal to the number of online CPUs
+.SS tcp\-workers
+.sp
+A number of TCP workers (threads) used to process incoming queries
+over TCP.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP equal to the number of online CPUs, default value is at least 10
+.SS background\-workers
+.sp
+A number of workers (threads) used to execute background operations (zone
+loading, zone updates, etc.).
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP equal to the number of online CPUs, default value is at most 10
+.SS async\-start
+.sp
+If enabled, server doesn\(aqt wait for the zones to be loaded and starts
+responding immediately with SERVFAIL answers until the zone loads.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS tcp\-idle\-timeout
+.sp
+Maximum idle time (in seconds) between requests on an inbound TCP connection.
+It means if there is no activity on an inbound TCP connection during this limit,
+the connection is closed by the server.
+.sp
+\fIMinimum:\fP \fB1\fP
+.sp
+\fIDefault:\fP \fB10\fP
+.SS tcp\-io\-timeout
+.sp
+Maximum time (in milliseconds) to receive or send one DNS message over an inbound
+TCP connection. It means this limit applies to normal DNS queries and replies,
+incoming DDNS, and \fBoutgoing zone transfers\fP\&. The timeout is measured since some
+data is already available for processing.
+Set to 0 for infinity.
+.sp
+\fIDefault:\fP \fB500\fP (milliseconds)
+.sp
+\fBCAUTION:\fP
+.INDENT 0.0
+.INDENT 3.5
+In order to reduce the risk of Slow Loris attacks, it\(aqs recommended setting
+this limit as low as possible on public servers.
+.UNINDENT
+.UNINDENT
+.SS tcp\-remote\-io\-timeout
+.sp
+Maximum time (in milliseconds) to receive or send one DNS message over an outbound
+TCP connection which has already been established to a configured remote server.
+It means this limit applies to incoming zone transfers, sending NOTIFY,
+DDNS forwarding, and DS check or push. This timeout includes the time needed
+for a network round\-trip and for a query processing by the remote.
+Set to 0 for infinity.
+.sp
+\fIDefault:\fP \fB5000\fP (milliseconds)
+.SS tcp\-reuseport
+.sp
+If enabled, each TCP worker listens on its own socket and the OS kernel
+socket load balancing is employed using SO_REUSEPORT (or SO_REUSEPORT_LB
+on FreeBSD). Due to the lack of one shared socket, the server can offer
+higher response rate processing over TCP. However, in the case of
+time\-consuming requests (e.g. zone transfers of a TLD zone), enabled reuseport
+may result in delayed or not being responded client requests. So it is
+advisable to use this option on secondary servers.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS tcp\-fastopen
+.sp
+If enabled, use TCP Fast Open for outbound TCP communication (client side):
+incoming zone transfers, sending NOTIFY, and DDNS forwarding. This mode simplifies
+TCP handshake and can result in better networking performance. TCP Fast Open
+for inbound TCP communication (server side) isn\(aqt affected by this
+configuration as it\(aqs enabled automatically if supported by OS.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+The TCP Fast Open support must also be enabled on the OS level:
+.INDENT 0.0
+.IP \(bu 2
+Linux/macOS: ensure kernel parameter \fBnet.ipv4.tcp_fastopen\fP is \fB2\fP or
+\fB3\fP for server side, and \fB1\fP or \fB3\fP for client side.
+.IP \(bu 2
+FreeBSD: ensure kernel parameter \fBnet.inet.tcp.fastopen.server_enable\fP
+is \fB1\fP for server side, and \fBnet.inet.tcp.fastopen.client_enable\fP is
+\fB1\fP for client side.
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS quic\-max\-clients
+.sp
+A maximum number of QUIC clients connected in parallel.
+.sp
+See also \fI\%quic\fP\&.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIMinimum:\fP \fB128\fP
+.sp
+\fIDefault:\fP \fB10000\fP (ten thousand)
+.SS quic\-outbuf\-max\-size
+.sp
+Maximum cumulative size of memory used for buffers of unACKed
+sent messages. This limit is per one UDP worker.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Set low if little memory is available (together with \fI\%quic\-max\-clients\fP
+since QUIC connections are memory\-heavy). Set to high value if outgoing zone
+transfers of big zone over QUIC are expected.
+.UNINDENT
+.UNINDENT
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIMinimum:\fP \fB1M\fP (1 MiB)
+.sp
+\fIDefault:\fP \fB100M\fP (100 MiB)
+.SS quic\-idle\-close\-timeout
+.sp
+Time in seconds, after which any idle QUIC connection is gracefully closed.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIMinimum:\fP \fB1\fP
+.sp
+\fIDefault:\fP \fB4\fP
+.SS remote\-pool\-limit
+.sp
+If nonzero, the server will keep up to this number of outgoing TCP connections
+open for later use. This is an optimization to avoid frequent opening of
+TCP connections to the same remote.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fB0\fP
+.SS remote\-pool\-timeout
+.sp
+The timeout in seconds after which the unused kept\-open outgoing TCP connections
+to remote servers are closed.
+.sp
+\fIDefault:\fP \fB5\fP
+.SS remote\-retry\-delay
+.sp
+When a connection attempt times out to some remote address, this information will be
+kept for this specified time (in milliseconds) and other connections to the same address won\(aqt
+be attempted. This prevents repetitive waiting for timeout on an unreachable remote.
+.sp
+\fIDefault:\fP \fB0\fP
+.SS socket\-affinity
+.sp
+If enabled and if SO_REUSEPORT is available on Linux, all configured network
+sockets are bound to UDP and TCP workers in order to increase the networking performance.
+This mode isn\(aqt recommended for setups where the number of network card queues
+is lower than the number of UDP or TCP workers.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS tcp\-max\-clients
+.sp
+A maximum number of TCP clients connected in parallel, set this below the file
+descriptor limit to avoid resource exhaustion.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+It is advisable to adjust the maximum number of open files per process in your
+operating system configuration.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP one half of the file descriptor limit for the server process
+.SS udp\-max\-payload
+.sp
+Maximum EDNS0 UDP payload size default for both IPv4 and IPv6.
+.sp
+\fIDefault:\fP \fB1232\fP
+.SS udp\-max\-payload\-ipv4
+.sp
+Maximum EDNS0 UDP payload size for IPv4.
+.sp
+\fIDefault:\fP \fB1232\fP
+.SS udp\-max\-payload\-ipv6
+.sp
+Maximum EDNS0 UDP payload size for IPv6.
+.sp
+\fIDefault:\fP \fB1232\fP
+.SS key\-file
+.sp
+Path to a server key PEM file which is used for DNS over QUIC communication.
+A non\-absolute path of a user specified key file is relative to the
+\fB@config_dir@\fP directory.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP auto\-generated key
+.SS cert\-file
+.sp
+Path to a server certificate PEM file which is used for DNS over QUIC communication.
+A non\-absolute path is relative to the \fB@config_dir@\fP directory.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP one\-time in\-memory certificate
+.SS edns\-client\-subnet
+.sp
+Enable or disable EDNS Client Subnet support. If enabled, responses to queries
+containing the EDNS Client Subnet option
+always contain a valid EDNS Client Subnet option according to \fI\%RFC 7871\fP\&.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS answer\-rotation
+.sp
+Enable or disable sorted\-rrset rotation in the answer section of normal replies.
+The rotation shift is simply determined by a query ID.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS automatic\-acl
+.sp
+If enabled, \fI\%automatic ACL\fP setting of
+configured remotes is considered when evaluating authorized operations.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS proxy\-allowlist
+.sp
+An ordered list of IP addresses, network subnets, or network ranges
+which are allowed as a source address of proxied DNS traffic over UDP.
+The supported proxy protocol is
+\fI\%haproxy PROXY v2\fP\&.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+TCP is not supported.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS dbus\-event
+.sp
+Specification of server or zone states which emit a D\-Bus signal on the system
+bus. The bus name is \fBcz.nic.knotd\fP, the object path is \fB/cz/nic/knotd\fP, and
+the interface name is \fBcz.nic.knotd.events\fP\&.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – No signal is emitted.
+.IP \(bu 2
+\fBrunning\fP – There are two possible signals emitted:
+.INDENT 2.0
+.IP \(bu 2
+\fBstarted\fP when the server is started and all configured zones (including
+catalog zones and their members) are loaded or successfully bootstrapped.
+.IP \(bu 2
+\fBstopped\fP when the server shutdown sequence is initiated.
+.UNINDENT
+.IP \(bu 2
+\fBzone\-updated\fP – The signal \fBzone_updated\fP is emitted when a zone has been updated;
+the signal parameters are \fIzone name\fP and \fIzone SOA serial\fP\&.
+.IP \(bu 2
+\fBkeys\-updated\fP \- The signal \fBkeys_updated\fP is emitted when a DNSSEC key set
+of this zone is updated.
+.IP \(bu 2
+\fBksk\-submission\fP – The signal \fBzone_ksk_submission\fP is emitted if there is
+a ready KSK present when the zone is signed; the signal parameters are
+\fIzone name\fP, \fIKSK keytag\fP, and \fIKSK KASP id\fP\&.
+.IP \(bu 2
+\fBdnssec\-invalid\fP – The signal \fBzone_dnssec_invalid\fP is emitted when DNSSEC
+validation fails; the signal parameter is \fIzone name\fP\&.
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This function requires systemd version at least 221.
+.UNINDENT
+.UNINDENT
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBnone\fP
+.SS dbus\-init\-delay
+.sp
+Time in seconds which the server waits upon D\-Bus initialization to ensure
+the D\-Bus client is ready to receive signals.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIMinimum:\fP \fB0\fP
+.sp
+\fIDefault:\fP \fB1\fP
+.SS listen
+.sp
+One or more IP addresses where the server listens for incoming queries.
+Optional port specification (default is 53) can be appended to each address
+using \fB@\fP separator. Use \fB0.0.0.0\fP for all configured IPv4 addresses or
+\fB::\fP for all configured IPv6 addresses. Filesystem path can be specified
+for listening on local unix SOCK_STREAM socket. Non\-absolute path
+(i.e. not starting with \fB/\fP) is relative to \fI\%rundir\fP\&.
+Non\-local address binding is automatically enabled if supported by the operating system.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP not set
+.SS listen\-quic
+.sp
+One or more IP addresses (and optionally ports) where the server listens
+for incoming queries over QUIC protocol.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP not set
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Incoming \fI\%DDNS\fP over QUIC isn\(aqt supported.
+The server always responds with SERVFAIL.
+.UNINDENT
+.UNINDENT
+.SH XDP SECTION
+.sp
+Various options related to XDP listening, especially TCP.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+xdp:
+    listen: STR[@INT] | ADDR[@INT] ...
+    udp: BOOL
+    tcp: BOOL
+    quic: BOOL
+    quic\-port: INT
+    tcp\-max\-clients: INT
+    tcp\-inbuf\-max\-size: SIZE
+    tcp\-outbuf\-max\-size: SIZE
+    tcp\-idle\-close\-timeout: TIME
+    tcp\-idle\-reset\-timeout: TIME
+    tcp\-resend\-timeout: TIME
+    route\-check: BOOL
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.sp
+\fBCAUTION:\fP
+.INDENT 0.0
+.INDENT 3.5
+When you change configuration parameters dynamically or via configuration file
+reload, some parameters in the XDP section require restarting the Knot server
+so that the changes take effect.
+.UNINDENT
+.UNINDENT
+.SS listen
+.sp
+One or more network device names (e.g. \fBens786f0\fP) on which the \fI\%Mode XDP\fP
+is enabled. Alternatively, an IP address can be used instead of a device name,
+but the server will still listen on all addresses belonging to the same interface!
+Optional port specification (default is 53) can be appended to each device name
+or address using \fB@\fP separator.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fBCAUTION:\fP
+.INDENT 0.0
+.INDENT 3.5
+If XDP workers only process regular DNS traffic over UDP, it is strongly
+recommended to also \fI\%listen\fP on the addresses which are
+intended to offer the DNS service, at least to fulfil the DNS requirement for
+working TCP.
+.UNINDENT
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Incoming \fI\%DDNS\fP over XDP isn\(aqt supported.
+The server always responds with SERVFAIL.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS udp
+.sp
+If enabled, DNS over UDP is processed with XDP workers.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBon\fP
+.SS tcp
+.sp
+If enabled, DNS over TCP traffic is processed with XDP workers.
+.sp
+The TCP stack limitations:
+.INDENT 0.0
+.INDENT 3.5
+.INDENT 0.0
+.IP \(bu 2
+Congestion control is not implemented.
+.IP \(bu 2
+Lost packets that do not contain TCP payload may not be resend.
+.IP \(bu 2
+Not optimized for transfers of non\-trivial zones.
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS quic
+.sp
+If enabled, DNS over QUIC is processed with XDP workers.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS quic\-port
+.sp
+DNS over QUIC will listen on the interfaces configured by \fI\%listen\fP,
+but on different port, configured by this option.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fIDefault:\fP \fB853\fP
+.SS tcp\-max\-clients
+.sp
+A maximum number of TCP clients connected in parallel.
+.sp
+\fIMinimum:\fP \fB1024\fP
+.sp
+\fIDefault:\fP \fB1000000\fP (one million)
+.SS tcp\-inbuf\-max\-size
+.sp
+Maximum cumulative size of memory used for buffers of incompletely
+received messages.
+.sp
+\fIMinimum:\fP \fB1M\fP (1 MiB)
+.sp
+\fIDefault:\fP \fB100M\fP (100 MiB)
+.SS tcp\-outbuf\-max\-size
+.sp
+Maximum cumulative size of memory used for buffers of unACKed
+sent messages.
+.sp
+\fIMinimum:\fP \fB1M\fP (1 MiB)
+.sp
+\fIDefault:\fP \fB100M\fP (100 MiB)
+.SS tcp\-idle\-close\-timeout
+.sp
+Time in seconds, after which any idle connection is gracefully closed.
+.sp
+\fIMinimum:\fP \fB1\fP
+.sp
+\fIDefault:\fP \fB10\fP
+.SS tcp\-idle\-reset\-timeout
+.sp
+Time in seconds, after which any idle connection is forcibly closed.
+.sp
+\fIMinimum:\fP \fB1\fP
+.sp
+\fIDefault:\fP \fB20\fP
+.SS tcp\-resend\-timeout
+.sp
+Resend outgoing data packets (with DNS response payload) if not ACKed
+before this timeout.
+.sp
+\fIMinimum:\fP \fB1\fP
+.sp
+\fIDefault:\fP \fB5\fP
+.SS route\-check
+.sp
+If enabled, routing information from the operating system is considered
+when processing every incoming DNS packet received over the XDP interface:
+.INDENT 0.0
+.IP \(bu 2
+If the outgoing interface of the corresponding DNS response differs from
+the incoming one, the packet is processed normally by UDP/TCP workers
+(XDP isn\(aqt used).
+.IP \(bu 2
+If the destination address is blackholed, unreachable, or prohibited,
+the DNS packet is dropped without any response.
+.IP \(bu 2
+The destination MAC address and possible VLAN tag for the response are taken
+from the routing system.
+.UNINDENT
+.sp
+If disabled, symmetrical routing is applied. It means that the query source
+MAC address is used as a response destination MAC address. Possible VLAN tag
+is preserved.
+.sp
+Change of this parameter requires restart of the Knot server to take effect.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This mode requires forwarding enabled on the loopback interface
+(\fBsysctl \-w net.ipv4.conf.lo.forwarding=1\fP and \fBsysctl \-w net.ipv6.conf.lo.forwarding=1\fP).
+If forwarding is disabled, all incoming DNS packets are dropped!
+.sp
+Only VLAN 802.1Q is supported.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SH CONTROL SECTION
+.sp
+Configuration of the server control interface.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+control:
+    listen: STR
+    timeout: TIME
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS listen
+.sp
+A UNIX socket \fI\%path\fP where the server listens for
+control commands.
+.sp
+\fIDefault:\fP \fI\%rundir\fP\fB/knot.sock\fP
+.SS timeout
+.sp
+Maximum time (in seconds) the control socket operations can take.
+Set to 0 for infinity.
+.sp
+\fIDefault:\fP \fB5\fP
+.SH LOG SECTION
+.sp
+Server can be configured to log to the standard output, standard error
+output, syslog (or systemd journal if systemd is enabled) or into an arbitrary
+file.
+.sp
+There are 6 logging severity levels:
+.INDENT 0.0
+.IP \(bu 2
+\fBcritical\fP – Non\-recoverable error resulting in server shutdown.
+.IP \(bu 2
+\fBerror\fP – Recoverable error, action should be taken.
+.IP \(bu 2
+\fBwarning\fP – Warning that might require user action.
+.IP \(bu 2
+\fBnotice\fP – Server notice or hint.
+.IP \(bu 2
+\fBinfo\fP – Informational message.
+.IP \(bu 2
+\fBdebug\fP – Debug or detailed message.
+.UNINDENT
+.sp
+In the case of a missing log section, \fBwarning\fP or more serious messages
+will be logged to both standard error output and syslog. The \fBinfo\fP and
+\fBnotice\fP messages will be logged to standard output.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+log:
+  \- target: stdout | stderr | syslog | STR
+    server: critical | error | warning | notice | info | debug
+    control: critical | error | warning | notice | info | debug
+    zone: critical | error | warning | notice | info | debug
+    quic: critical | error | warning | notice | info | debug
+    any: critical | error | warning | notice | info | debug
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS target
+.sp
+A logging output.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBstdout\fP – Standard output.
+.IP \(bu 2
+\fBstderr\fP – Standard error output.
+.IP \(bu 2
+\fBsyslog\fP – Syslog or systemd journal.
+.IP \(bu 2
+\fIfile_name\fP – A specific file.
+.UNINDENT
+.sp
+With \fBsyslog\fP target, syslog service is used. However, if Knot DNS has been compiled
+with systemd support and operating system has been booted with systemd, systemd journal
+is used for logging instead of syslog.
+.sp
+A \fIfile_name\fP may be specified as an absolute path or a path relative to the
+\fI\%knotd\fP startup directory.
+.SS server
+.sp
+Minimum severity level for messages related to general operation of the server to be
+logged.
+.sp
+\fIDefault:\fP not set
+.SS control
+.sp
+Minimum severity level for messages related to server control to be logged.
+.sp
+\fIDefault:\fP not set
+.SS zone
+.sp
+Minimum severity level for messages related to zones to be logged.
+.sp
+\fIDefault:\fP not set
+.SS quic
+.sp
+Minimum severity level for messages related to QUIC to be logged.
+.sp
+\fIDefault:\fP not set
+.SS any
+.sp
+Minimum severity level for all message types, except \fBquic\fP, to be logged.
+.sp
+\fIDefault:\fP not set
+.SH STATS SECTION
+.sp
+Periodic server statistics dumping.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+statistics:
+    timer: TIME
+    file: STR
+    append: BOOL
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS timer
+.sp
+A period (in seconds) after which all available statistics metrics will by written to the
+\fI\%file\fP\&.
+.sp
+\fIDefault:\fP not set
+.SS file
+.sp
+A file \fI\%path\fP of statistics output in the YAML format.
+.sp
+\fIDefault:\fP \fI\%rundir\fP\fB/stats.yaml\fP
+.SS append
+.sp
+If enabled, the output will be appended to the \fI\%file\fP
+instead of file replacement.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SH DATABASE SECTION
+.sp
+Configuration of databases for zone contents, DNSSEC metadata, or event timers.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+database:
+    storage: STR
+    journal\-db: STR
+    journal\-db\-mode: robust | asynchronous
+    journal\-db\-max\-size: SIZE
+    kasp\-db: STR
+    kasp\-db\-max\-size: SIZE
+    timer\-db: STR
+    timer\-db\-max\-size: SIZE
+    catalog\-db: str
+    catalog\-db\-max\-size: SIZE
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS storage
+.sp
+A data directory for storing journal, KASP, and timer databases. A non\-absolute
+path is relative to the \fI\%knotd\fP startup directory.
+.sp
+\fIDefault:\fP \fB${localstatedir}/lib/knot\fP (configured with \fB\-\-with\-storage=path\fP)
+.SS journal\-db
+.sp
+An explicit \fI\%specification\fP of the persistent journal database
+directory.
+.sp
+\fIDefault:\fP \fI\%storage\fP\fB/journal\fP
+.SS journal\-db\-mode
+.sp
+Specifies journal LMDB backend configuration, which influences performance
+and durability.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBrobust\fP – The journal database disk synchronization ensures database
+durability but is generally slower.
+.IP \(bu 2
+\fBasynchronous\fP – The journal database disk synchronization is optimized for
+better performance at the expense of lower database durability in the case of
+a crash. This mode is recommended on secondary servers with many zones.
+.UNINDENT
+.sp
+\fIDefault:\fP \fBrobust\fP
+.SS journal\-db\-max\-size
+.sp
+The hard limit for the journal database maximum size. There is no cleanup logic
+in journal to recover from reaching this limit. Journal simply starts refusing
+changes across all zones. Decreasing this value has no effect if it is lower
+than the actual database file size.
+.sp
+It is recommended to limit \fI\%journal\-max\-usage\fP
+per\-zone instead of \fI\%journal\-db\-max\-size\fP
+in most cases. Please keep this value larger than the sum of all zones\(aq
+journal usage limits. See more details regarding
+\fI\%journal behaviour\fP\&.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This value also influences server\(aqs usage of virtual memory.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB20G\fP (20 GiB), or \fB512M\fP (512 MiB) for 32\-bit
+.SS kasp\-db
+.sp
+An explicit \fI\%specification\fP of the KASP database directory.
+.sp
+\fIDefault:\fP \fI\%storage\fP\fB/keys\fP
+.SS kasp\-db\-max\-size
+.sp
+The hard limit for the KASP database maximum size.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This value also influences server\(aqs usage of virtual memory.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB500M\fP (500 MiB)
+.SS timer\-db
+.sp
+An explicit \fI\%specification\fP of the persistent timer
+database directory.
+.sp
+\fIDefault:\fP \fI\%storage\fP\fB/timers\fP
+.SS timer\-db\-max\-size
+.sp
+The hard limit for the timer database maximum size.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This value also influences server\(aqs usage of virtual memory.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB100M\fP (100 MiB)
+.SS catalog\-db
+.sp
+An explicit \fI\%specification\fP of the zone catalog
+database directory. Only useful if \fI\%Catalog zones\fP are enabled.
+.sp
+\fIDefault:\fP \fI\%storage\fP\fB/catalog\fP
+.SS catalog\-db\-max\-size
+.sp
+The hard limit for the catalog database maximum size.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This value also influences server\(aqs usage of virtual memory.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB20G\fP (20 GiB), or \fB512M\fP (512 MiB) for 32\-bit
+.SH KEYSTORE SECTION
+.sp
+DNSSEC keystore configuration.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+keystore:
+  \- id: STR
+    backend: pem | pkcs11
+    config: STR
+    key\-label: BOOL
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A keystore identifier.
+.SS backend
+.sp
+A key storage backend type.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBpem\fP – PEM files.
+.IP \(bu 2
+\fBpkcs11\fP – PKCS #11 storage.
+.UNINDENT
+.sp
+\fIDefault:\fP \fBpem\fP
+.SS config
+.sp
+A backend specific configuration. A directory with PEM files (the path can
+be specified as a relative path to \fI\%kasp\-db\fP) or
+a configuration string for PKCS #11 storage (\fI<pkcs11\-uri> <module\-path>\fP).
+The PKCS #11 URI Scheme is defined in \fI\%RFC 7512\fP\&.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Example configuration string for PKCS #11:
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+\(dqpkcs11:token=knot;pin\-value=1234 /usr/lib64/pkcs11/libsofthsm2.so\(dq
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fI\%kasp\-db\fP\fB/keys\fP
+.SS key\-label
+.sp
+If enabled in combination with the PKCS #11 \fI\%backend\fP, generated keys
+are labeled in the form \fB<zone_name> KSK|ZSK\fP\&.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SH KEY SECTION
+.sp
+Shared TSIG keys used to authenticate communication with the server.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+key:
+  \- id: DNAME
+    algorithm: hmac\-md5 | hmac\-sha1 | hmac\-sha224 | hmac\-sha256 | hmac\-sha384 | hmac\-sha512
+    secret: BASE64
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A key name identifier.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This value MUST be exactly the same as the name of the TSIG key on the
+opposite primary/secondary server(s).
+.UNINDENT
+.UNINDENT
+.SS algorithm
+.sp
+A TSIG key algorithm. See
+\fI\%TSIG Algorithm Numbers\fP\&.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBhmac\-md5\fP
+.IP \(bu 2
+\fBhmac\-sha1\fP
+.IP \(bu 2
+\fBhmac\-sha224\fP
+.IP \(bu 2
+\fBhmac\-sha256\fP
+.IP \(bu 2
+\fBhmac\-sha384\fP
+.IP \(bu 2
+\fBhmac\-sha512\fP
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS secret
+.sp
+Shared key secret.
+.sp
+\fIDefault:\fP not set
+.SH REMOTE SECTION
+.sp
+Definitions of remote servers for outgoing connections (source of a zone
+transfer, target for a notification, etc.).
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+remote:
+  \- id: STR
+    address: ADDR[@INT] | STR ...
+    via: ADDR[@INT] ...
+    quic: BOOL
+    key: key_id
+    cert\-key: BASE64 ...
+    block\-notify\-after\-transfer: BOOL
+    no\-edns: BOOL
+    automatic\-acl: BOOL
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A remote identifier.
+.SS address
+.sp
+An ordered list of destination IP addresses or UNIX socket paths which are
+used for communication with the remote server. Non\-absolute path
+(i.e. not starting with \fB/\fP) is relative to \fI\%rundir\fP\&.
+Optional destination port (default is 53 for UDP/TCP and 853 for QUIC)
+can be appended to the address using \fB@\fP separator.
+The addresses are tried in sequence until the
+remote is reached.
+.sp
+\fIDefault:\fP not set
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If the remote is contacted and it refuses to perform requested action,
+no more addresses will be tried for this remote.
+.UNINDENT
+.UNINDENT
+.SS via
+.sp
+An ordered list of source IP addresses which are used as source addresses
+for communication with the remote. For the N\-th \fI\%remote address\fP,
+the last, but at most N\-th, specified \fI\%via address\fP
+of the same family is used.
+This option can help if the server listens on more addresses.
+Optional source port (default is random) can be appended
+to the address using \fB@\fP separator.
+.sp
+\fIDefault:\fP not set
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+For the following configuration:
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+remote:
+  \- id: example
+    address: [198.51.100.10, 2001:db8::10, 198.51.100.20, 2001:db8::20]
+    via: [198.51.100.1, 198.51.100.2, 2001:db8::1]
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.sp
+the (\fBvia\fP \-> \fBaddress\fP) mapping is:
+.INDENT 0.0
+.IP \(bu 2
+\fB198.51.100.1\fP \-> \fB198.51.100.10\fP
+.IP \(bu 2
+\fB2001:db8::1\fP \->  \fB2001:db8::10\fP
+.IP \(bu 2
+\fB198.51.100.2\fP \-> \fB198.51.100.20\fP
+.IP \(bu 2
+\fB2001:db8::1\fP \-> \fB2001:db8::20\fP
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.SS quic
+.sp
+If this option is set, the QUIC protocol will be used for outgoing communication
+with this remote.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+One connection per each remote is opened; \fI\%remote\-pool\-limit\fP
+does not take effect for QUIC. However, fast QUIC handshakes utilizing obtained
+session tickets are used for reopening connections to recently (up to 1 day)
+queried remotes.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS key
+.sp
+A \fI\%reference\fP to the TSIG key which is used to authenticate
+the communication with the remote server.
+.sp
+\fIDefault:\fP not set
+.SS cert\-key
+.sp
+An ordered list of remote certificate public key PINs. If the list is non\-empty,
+communication with the remote is possible only via QUIC protocol and
+a peer certificate is required. The peer certificate key must match one of the
+specified PINs.
+.sp
+A PIN is a unique identifier that represents the public key of the peer certificate.
+It\(aqs a base64\-encoded SHA\-256 hash of the public key. This identifier
+remains the same on a certificate renewal.
+.sp
+\fIDefault:\fP not set
+.SS block\-notify\-after\-transfer
+.sp
+When incoming AXFR/IXFR from this remote (as a primary server), suppress
+sending NOTIFY messages to all configured secondary servers.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS no\-edns
+.sp
+If enabled, no OPT record (EDNS) is inserted to outgoing requests to this
+remote server. This mode is necessary for communication with some broken
+implementations (e.g. Windows Server 2016).
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option effectively disables \fI\%zone expire\fP timer
+updates via EDNS EXPIRE option specified in \fI\%RFC 7314\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS automatic\-acl
+.sp
+If enabled, some authorized operations for the remote are automatically allowed
+based on the context:
+.INDENT 0.0
+.IP \(bu 2
+Incoming NOTIFY is allowed from the remote if it\(aqs configured as a
+\fI\%primary server\fP for the zone.
+.IP \(bu 2
+Outgoing zone transfer is allowed to the remote if it\(aqs configured as a
+\fI\%NOTIFY target\fP for the zone.
+.UNINDENT
+.sp
+Automatic ACL rules are evaluated before explicit \fI\%zone ACL\fP configuration.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This functionality requires global activation via
+\fI\%automatic\-acl\fP in the server section.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBon\fP
+.SH REMOTES SECTION
+.sp
+Definitions of groups of remote servers. Remote grouping can simplify the
+configuration.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+remotes:
+  \- id: STR
+    remote: remote_id ...
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A remote group identifier.
+.SS remote
+.sp
+An ordered list of \fI\%references\fP to remote server definitions.
+.sp
+\fIDefault:\fP not set
+.SH ACL SECTION
+.sp
+Access control list rule definitions. An ACL rule is a description of one
+or more authorized operations (zone transfer request, zone change notification,
+and dynamic DNS update) which are allowed to be processed or denied.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+acl:
+  \- id: STR
+    address: ADDR[/INT] | ADDR\-ADDR | STR ...
+    key: key_id ...
+    cert\-key: BASE64 ...
+    remote: remote_id | remotes_id ...
+    action: query | notify | transfer | update ...
+    deny: BOOL
+    update\-type: STR ...
+    update\-owner: key | zone | name
+    update\-owner\-match: sub\-or\-equal | equal | sub | pattern
+    update\-owner\-name: STR ...
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+An ACL rule identifier.
+.SS address
+.sp
+An ordered list of IP addresses, absolute UNIX socket paths, network subnets,
+or network ranges. The query\(aqs
+source address must match one of them. If this item is not set, address match is not
+required.
+.sp
+\fIDefault:\fP not set
+.SS key
+.sp
+An ordered list of \fI\%reference\fPs to TSIG keys. The query must
+match one of them. If this item is not set, transaction authentication is not used.
+.sp
+\fIDefault:\fP not set
+.SS cert\-key
+.sp
+An ordered list of remote certificate public key PINs. If the list is non\-empty,
+communication with the remote is possible only via QUIC protocol and
+a peer certificate is required. The peer certificate key must match one of the
+specified PINs.
+.sp
+A PIN is a unique identifier that represents the public key of the peer certificate.
+It\(aqs a base64\-encoded SHA\-256 hash of the public key. This identifier
+remains the same on a certificate renewal.
+.sp
+\fIDefault:\fP not set
+.SS remote
+.sp
+An ordered list of references \fI\%remote\fP and
+\fI\%remotes\fP\&. The query must
+match one of the remotes. Specifically, one of the remote\(aqs addresses and remote\(aqs
+TSIG key if configured must match.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option cannot be specified along with the \fI\%address\fP or
+\fI\%key\fP option at one ACL item.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS action
+.sp
+An ordered list of allowed (or denied) actions.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBquery\fP – Allow regular DNS query. As normal queries are always allowed,
+this action is only useful in combination with \fI\%TSIG key\fP\&.
+.IP \(bu 2
+\fBnotify\fP – Allow incoming notify (NOTIFY).
+.IP \(bu 2
+\fBtransfer\fP – Allow zone transfer (AXFR, IXFR).
+.IP \(bu 2
+\fBupdate\fP – Allow zone updates (DDNS).
+.UNINDENT
+.sp
+\fIDefault:\fP \fBquery\fP
+.SS deny
+.sp
+If enabled, instead of allowing, deny the specified \fI\%action\fP,
+\fI\%address\fP, \fI\%key\fP, or combination if these
+items. If no action is specified, deny all actions.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS update\-type
+.sp
+A list of allowed types of Resource Records in a zone update. Every record in an update
+must match one of the specified types.
+.sp
+\fIDefault:\fP not set
+.SS update\-owner
+.sp
+This option restricts possible owners of Resource Records in a zone update by comparing
+them to either the \fI\%TSIG key\fP identity, the current zone name, or to a list of
+domain names given by the \fI\%update\-owner\-name\fP option.
+The comparison method is given by the \fI\%update\-owner\-match\fP option.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBkey\fP — The owner of each updated RR must match the identity of the TSIG key if used.
+.IP \(bu 2
+\fBname\fP — The owner of each updated RR must match at least one name in the
+\fI\%update\-owner\-name\fP list.
+.IP \(bu 2
+\fBzone\fP — The owner of each updated RR must match the current zone name.
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS update\-owner\-match
+.sp
+This option defines how the owners of Resource Records in an update are matched to the domain name(s)
+set by the \fI\%update\-owner\fP option.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBsub\-or\-equal\fP — The owner of each RR in an update must either be equal to
+or be a subdomain of at least one domain name set by \fI\%update\-owner\fP\&.
+.IP \(bu 2
+\fBequal\fP — The owner of each updated RR must be equal to at least one domain
+name set by \fI\%update\-owner\fP\&.
+.IP \(bu 2
+\fBsub\fP — The owner of each updated RR must be a subdomain of, but MUST NOT
+be equal to at least one domain name set by \fI\%update\-owner\fP\&.
+.IP \(bu 2
+\fBpattern\fP — The owner of each updated RR must match a pattern specified by
+\fI\%update\-owner\fP\&. The pattern can be an arbitrary FQDN or non\-FQDN
+domain name. If a label consists of one \fB*\fP (asterisk) character, it
+matches any label. More asterisk labels can be specified.
+.UNINDENT
+.sp
+\fIDefault:\fP \fBsub\-or\-equal\fP
+.SS update\-owner\-name
+.sp
+A list of allowed owners of RRs in a zone update used with \fI\%update\-owner\fP
+set to \fBname\fP\&. Every listed owner name which is not FQDN (i.e. it doesn\(aqt end
+in a dot) is considered as if it was appended with the target zone name.
+Such a relative owner name specification allows better ACL rule reusability across
+multiple zones.
+.sp
+\fIDefault:\fP not set
+.SH SUBMISSION SECTION
+.sp
+Parameters of KSK submission checks.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+submission:
+  \- id: STR
+    parent: remote_id | remotes_id ...
+    check\-interval: TIME
+    timeout: TIME
+    parent\-delay: TIME
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A submission identifier.
+.SS parent
+.sp
+A list of references \fI\%remote\fP and \fI\%remotes\fP
+to parent\(aqs DNS servers to be checked for
+presence of corresponding DS records in the case of KSK submission. All of them must
+have a corresponding DS for the rollover to continue. If none is specified, the
+rollover must be pushed forward manually.
+.sp
+\fIDefault:\fP not set
+.sp
+\fBTIP:\fP
+.INDENT 0.0
+.INDENT 3.5
+A DNSSEC\-validating resolver can be set as a parent.
+.UNINDENT
+.UNINDENT
+.SS check\-interval
+.sp
+Interval for periodic checks of DS presence on parent\(aqs DNS servers, in the
+case of the KSK submission.
+.sp
+\fIDefault:\fP \fB1h\fP (1 hour)
+.SS timeout
+.sp
+After this time period (in seconds) the KSK submission is automatically considered
+successful, even if all the checks were negative or no parents are configured.
+Set to 0 for infinity.
+.sp
+\fIDefault:\fP \fB0\fP
+.SS parent\-delay
+.sp
+After successful parent DS check, wait for this period before continuing the next
+key roll\-over step. This delay shall cover the propagation delay of update in the
+parent zone.
+.sp
+\fIDefault:\fP \fB0\fP
+.SH DNSKEY-SYNC SECTION
+.sp
+Parameters of DNSKEY dynamic\-update synchrnization.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+dnskey\-sync:
+  \- id: STR
+    remote: remote_id | remotes_id ...
+    check\-interval: TIME
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A dnskey\-sync identifier.
+.SS remote
+.sp
+A list of references \fI\%remote\fP and \fI\%remotes\fP
+to other signers or common master, which the DDNS updates with
+DNSKEY/CDNSKEY/CDS records shall be sent to.
+.sp
+\fIDefault:\fP not set
+.SS check\-interval
+.sp
+If the last DNSKEY sync failed or resulted in any change, re\-check
+the consistence after this interval and re\-try if needed.
+.sp
+\fIDefault:\fP \fB60\fP (1 minute)
+.SH POLICY SECTION
+.sp
+DNSSEC policy configuration.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+policy:
+  \- id: STR
+    keystore: keystore_id
+    manual: BOOL
+    single\-type\-signing: BOOL
+    algorithm: rsasha1 | rsasha1\-nsec3\-sha1 | rsasha256 | rsasha512 | ecdsap256sha256 | ecdsap384sha384 | ed25519 | ed448
+    ksk\-size: SIZE
+    zsk\-size: SIZE
+    ksk\-shared: BOOL
+    dnskey\-ttl: TIME
+    zone\-max\-ttl: TIME
+    ksk\-lifetime: TIME
+    zsk\-lifetime: TIME
+    delete\-delay: TIME
+    propagation\-delay: TIME
+    rrsig\-lifetime: TIME
+    rrsig\-refresh: TIME
+    rrsig\-pre\-refresh: TIME
+    reproducible\-signing: BOOL
+    nsec3: BOOL
+    nsec3\-iterations: INT
+    nsec3\-opt\-out: BOOL
+    nsec3\-salt\-length: INT
+    nsec3\-salt\-lifetime: TIME
+    signing\-threads: INT
+    ksk\-submission: submission_id
+    ds\-push: remote_id | remotes_id ...
+    cds\-cdnskey\-publish: none | delete\-dnssec | rollover | always | double\-ds
+    cds\-digest\-type: sha256 | sha384
+    dnskey\-management: full | incremental
+    offline\-ksk: BOOL
+    unsafe\-operation: none | no\-check\-keyset | no\-update\-dnskey | no\-update\-nsec | no\-update\-expired ...
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A policy identifier.
+.SS keystore
+.sp
+A \fI\%reference\fP to a keystore holding private key material
+for zones.
+.sp
+\fIDefault:\fP an imaginary keystore with all default values
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+A configured keystore called \(dqdefault\(dq won\(aqt be used unless explicitly referenced.
+.UNINDENT
+.UNINDENT
+.SS manual
+.sp
+If enabled, automatic key management is not used.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS single\-type\-signing
+.sp
+If enabled, Single\-Type Signing Scheme is used in the automatic key management
+mode.
+.sp
+\fIDefault:\fP \fBoff\fP (\fI\%module onlinesign\fP has default \fBon\fP)
+.SS algorithm
+.sp
+An algorithm of signing keys and issued signatures. See
+\fI\%DNSSEC Algorithm Numbers\fP\&.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBrsasha1\fP
+.IP \(bu 2
+\fBrsasha1\-nsec3\-sha1\fP
+.IP \(bu 2
+\fBrsasha256\fP
+.IP \(bu 2
+\fBrsasha512\fP
+.IP \(bu 2
+\fBecdsap256sha256\fP
+.IP \(bu 2
+\fBecdsap384sha384\fP
+.IP \(bu 2
+\fBed25519\fP
+.IP \(bu 2
+\fBed448\fP
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Ed25519 algorithm is only available if compiled with GnuTLS 3.6.0+.
+.sp
+Ed448 algorithm is only available if compiled with GnuTLS 3.6.12+ and Nettle 3.6+.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBecdsap256sha256\fP
+.SS ksk\-size
+.sp
+A length of newly generated KSK or
+CSK keys.
+.sp
+\fIDefault:\fP \fB2048\fP (rsa*), \fB256\fP (ecdsap256), \fB384\fP (ecdsap384), \fB256\fP (ed25519),
+\fB456\fP (ed448)
+.SS zsk\-size
+.sp
+A length of newly generated ZSK keys.
+.sp
+\fIDefault:\fP see default for \fI\%ksk\-size\fP
+.SS ksk\-shared
+.sp
+If enabled, all zones with this policy assigned will share one or more KSKs.
+More KSKs can be shared during a KSK rollover.
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+As the shared KSK set is bound to the policy \fI\%id\fP, renaming the
+policy breaks this connection and new shared KSK set is initiated when
+a new KSK is needed.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS dnskey\-ttl
+.sp
+A TTL value for DNSKEY records added into zone apex.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Has influence over ZSK key lifetime.
+.UNINDENT
+.UNINDENT
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+Ensure all DNSKEYs with updated TTL are propagated before any subsequent
+DNSKEY rollover starts.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP zone SOA TTL
+.SS zone\-max\-ttl
+.sp
+Declare (override) maximal TTL value among all the records in zone.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+It\(aqs generally recommended to override the maximal TTL computation by setting this
+explicitly whenever possible. It\(aqs required for \fI\%DNSSEC Offline KSK\fP and
+really reasonable when records are generated dynamically
+(e.g. by a \fI\%module\fP).
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP computed after zone is loaded
+.SS ksk\-lifetime
+.sp
+A period between KSK generation and the next rollover initiation.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+KSK key lifetime is also influenced by propagation\-delay, dnskey\-ttl,
+and KSK submission delay.
+.sp
+Zero (aka infinity) value causes no KSK rollover as a result.
+.sp
+This applies for CSK lifetime if single\-type\-signing is enabled.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB0\fP
+.SS zsk\-lifetime
+.sp
+A period between ZSK activation and the next rollover initiation.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+More exactly, this period is measured since a ZSK is activated,
+and after this, a new ZSK is generated to replace it within
+following roll\-over.
+.sp
+ZSK key lifetime is also influenced by propagation\-delay and dnskey\-ttl
+.sp
+Zero (aka infinity) value causes no ZSK rollover as a result.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB30d\fP (30 days)
+.SS delete\-delay
+.sp
+Once a key (KSK or ZSK) is rolled\-over and removed from the zone,
+keep it in the KASP database for at least this period before deleting it completely.
+This might be useful in some troubleshooting cases when resurrection
+is needed.
+.sp
+\fIDefault:\fP \fB0\fP
+.SS propagation\-delay
+.sp
+An extra delay added for each key rollover step. This value should be high
+enough to cover propagation of data from the primary server to all
+secondary servers, as well as the duration of signing routine itself and
+possible outages in signing and propagation infrastructure. In other words,
+this delay should ensure that within this period of time after planned
+change of the key set, all public\-facing secondaries will already serve
+new DNSKEY RRSet for sure.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Has influence over ZSK key lifetime.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB1h\fP (1 hour)
+.SS rrsig\-lifetime
+.sp
+A validity period of newly issued signatures.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+The RRSIG\(aqs signature inception time is set to 90 minutes in the past. This
+time period is not counted to the signature lifetime.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB14d\fP (14 days)
+.SS rrsig\-refresh
+.sp
+A period how long at least before a signature expiration the signature will be refreshed,
+in order to prevent expired RRSIGs on secondary servers or resolvers\(aq caches.
+.sp
+\fIDefault:\fP 0.1 * \fI\%rrsig\-lifetime\fP + \fI\%propagation\-delay\fP + \fI\%zone\-max\-ttl\fP
+.SS rrsig\-pre\-refresh
+.sp
+A period how long at most before a signature refresh time the signature might be refreshed,
+in order to refresh RRSIGs in bigger batches on a frequently updated zone
+(avoid re\-sign event too often).
+.sp
+\fIDefault:\fP \fB1h\fP (1 hour)
+.SS reproducible\-signing
+.sp
+For ECDSA algorithms, generate RRSIG signatures deterministically (\fI\%RFC 6979\fP).
+Besides better theoretical cryptographic security, this mode allows significant
+speed\-up of loading signed (by the same method) zones. However, the zone signing
+is a bit slower.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS nsec3
+.sp
+Specifies if NSEC3 will be used instead of NSEC.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS nsec3\-iterations
+.sp
+A number of additional times the hashing is performed.
+.sp
+\fIDefault:\fP \fB0\fP
+.SS nsec3\-opt\-out
+.sp
+If set, NSEC3 records won\(aqt be created for insecure delegations.
+This speeds up the zone signing and reduces overall zone size.
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+NSEC3 with the Opt\-Out bit set no longer works as a proof of non\-existence
+in this zone.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS nsec3\-salt\-length
+.sp
+A length of a salt field in octets, which is appended to the original owner
+name before hashing.
+.sp
+\fIDefault:\fP \fB8\fP
+.SS nsec3\-salt\-lifetime
+.sp
+A validity period of newly issued salt field.
+.sp
+Zero value means infinity.
+.sp
+Special value \fI\-1\fP triggers re\-salt every time when active ZSK changes.
+This optimizes the number of big changes to the zone.
+.sp
+\fIDefault:\fP \fB30d\fP (30 days)
+.SS signing\-threads
+.sp
+When signing zone or update, use this number of threads for parallel signing.
+.sp
+Those are extra threads independent of \fI\%Background workers\fP\&.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Some steps of the DNSSEC signing operation are not parallelized.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB1\fP (no extra threads)
+.SS ksk\-submission
+.sp
+A reference to \fI\%submission\fP section holding parameters of
+KSK submission checks.
+.sp
+\fIDefault:\fP not set
+.SS ds\-push
+.sp
+Optional references \fI\%remote\fP and \fI\%remotes\fP
+to authoritative DNS server of the
+parent\(aqs zone. The remote server must be configured to accept DS record
+updates via DDNS. Whenever a CDS record in the local zone is changed, the
+corresponding DS record is sent as a dynamic update (DDNS) to the parent
+DNS server. All previous DS records are deleted within the DDNS message.
+It\(aqs possible to manage both child and parent zones by the same Knot DNS server.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This feature requires \fI\%cds\-cdnskey\-publish\fP
+not to be set to \fBnone\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+The mentioned change to CDS record usually means that a KSK roll\-over is running
+and the new key being rolled\-in is in \(dqready\(dq state already for the period of
+\fI\%propagation\-delay\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Module \fI\%Onlinesign\fP doesn\(aqt support DS push.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS dnskey\-sync
+.sp
+A reference to \fI\%dnskey\-sync\fP section holding parameters
+of DNSKEY synchronization.
+.sp
+\fIDefault:\fP not set
+.SS cds\-cdnskey\-publish
+.sp
+Controls if and how shall the CDS and CDNSKEY be published in the zone.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – Never publish any CDS or CDNSKEY records in the zone.
+.IP \(bu 2
+\fBdelete\-dnssec\fP – Publish special CDS and CDNSKEY records indicating turning off DNSSEC.
+.IP \(bu 2
+\fBrollover\fP – Publish CDS and CDNSKEY records for ready and not yet active KSK (submission phase of KSK rollover).
+.IP \(bu 2
+\fBalways\fP – Always publish one CDS and one CDNSKEY records for the current KSK.
+.IP \(bu 2
+\fBdouble\-ds\fP – Always publish up to two CDS and two CDNSKEY records for ready and/or active KSKs.
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If the zone keys are managed manually, the CDS and CDNSKEY rrsets may contain
+more records depending on the keys available.
+.UNINDENT
+.UNINDENT
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+The \fBdouble\-ds\fP value does not trigger double\-DS roll\-over method. That method is
+only supported when performed manually, with unset \fI\%ksk\-submission\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBrollover\fP
+.SS cds\-digest\-type
+.sp
+Specify digest type for published CDS records.
+.sp
+\fIDefault:\fP \fBsha256\fP
+.SS dnskey\-management
+.sp
+Specify how the DNSKEY, CDNSKEY, and CDS RRSets at the zone apex are handled
+when (re\-)signing the zone.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBfull\fP – Upon every zone (re\-)sign, delete all unknown DNSKEY, CDNSKEY, and CDS
+records and keep just those that are related to the zone keys stored in the KASP database.
+.IP \(bu 2
+\fBincremental\fP – Keep unknown DNSKEY, CDNSKEY, and CDS records in the zone, and
+modify server\-managed records incrementally by employing changes in the KASP database.
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Prerequisites for \fIincremental\fP:
+.INDENT 0.0
+.IP \(bu 2
+The \fI\%Offline KSK\fP isn\(aqt supported.
+.IP \(bu 2
+The \fI\%delete\-delay\fP is long enough to cover possible daemon
+shutdown (e.g. due to server maintenance).
+.IP \(bu 2
+Avoided manual deletion of keys with \fI\%keymgr\fP\&.
+.UNINDENT
+.sp
+Otherwise there might remain some DNSKEY records in the zone, belonging to
+deleted keys.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBfull\fP
+.SS offline\-ksk
+.sp
+Specifies if \fI\%Offline KSK\fP feature is enabled.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS unsafe\-operation
+.sp
+Turn off some DNSSEC safety features.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – Nothing disabled.
+.IP \(bu 2
+\fBno\-check\-keyset\fP – Don\(aqt check active keys in present algorithms. This may
+lead to violation of \fI\%RFC 4035#section\-2.2\fP\&.
+.IP \(bu 2
+\fBno\-update\-dnskey\fP – Don\(aqt maintain/update DNSKEY, CDNSKEY, and CDS records
+in the zone apex according to KASP database. Juste leave them as they are in the zone.
+.IP \(bu 2
+\fBno\-update\-nsec\fP – Don\(aqt maintain/update NSEC/NSEC3 chain. Leave all the records
+as they are in the zone.
+.IP \(bu 2
+\fBno\-update\-expired\fP – Don\(aqt update expired RRSIGs.
+.UNINDENT
+.sp
+Multiple values may be specified.
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+This mode is intended for DNSSEC experts who understand the corresponding consequences.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBnone\fP
+.SH TEMPLATE SECTION
+.sp
+A template is shareable zone settings, which can simplify configuration by
+reducing duplicates. A special default template (with the \fIdefault\fP identifier)
+can be used for global zone configuration or as an implicit configuration
+if a zone doesn\(aqt have another template specified.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+template:
+  \- id: STR
+    global\-module: STR/STR ...
+    # All zone options (excluding \(aqtemplate\(aq item)
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If an item is explicitly specified both in the referenced template and
+the zone, the template item value is overridden by the zone item value.
+.UNINDENT
+.UNINDENT
+.SS id
+.sp
+A template identifier.
+.SS global\-module
+.sp
+An ordered list of references to query modules in the form of \fImodule_name\fP or
+\fImodule_name/module_id\fP\&. These modules apply to all queries.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option is only available in the \fIdefault\fP template.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SH ZONE SECTION
+.sp
+Definition of zones served by the server.
+.INDENT 0.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+zone:
+  \- domain: DNAME
+    template: template_id
+    storage: STR
+    file: STR
+    master: remote_id | remotes_id ...
+    ddns\-master: remote_id
+    notify: remote_id | remotes_id ...
+    acl: acl_id ...
+    master\-pin\-tolerance: TIME
+    provide\-ixfr: BOOL
+    semantic\-checks: BOOL | soft
+    zonefile\-sync: TIME
+    zonefile\-load: none | difference | difference\-no\-serial | whole
+    journal\-content: none | changes | all
+    journal\-max\-usage: SIZE
+    journal\-max\-depth: INT
+    ixfr\-benevolent: BOOL
+    ixfr\-by\-one: BOOL
+    ixfr\-from\-axfr: BOOL
+    zone\-max\-size : SIZE
+    adjust\-threads: INT
+    dnssec\-signing: BOOL
+    dnssec\-validation: BOOL
+    dnssec\-policy: policy_id
+    ds\-push: remote_id | remotes_id ...
+    zonemd\-verify: BOOL
+    zonemd\-generate: none | zonemd\-sha384 | zonemd\-sha512 | remove
+    serial\-policy: increment | unixtime | dateserial
+    serial\-modulo: INT/INT
+    reverse\-generate: DNAME
+    refresh\-min\-interval: TIME
+    refresh\-max\-interval: TIME
+    retry\-min\-interval: TIME
+    retry\-max\-interval: TIME
+    expire\-min\-interval: TIME
+    expire\-max\-interval: TIME
+    catalog\-role: none | interpret | generate | member
+    catalog\-template: template_id ...
+    catalog\-zone: DNAME
+    catalog\-group: STR
+    module: STR/STR ...
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.SS domain
+.sp
+A zone name identifier.
+.SS template
+.sp
+A \fI\%reference\fP to a configuration template.
+.sp
+\fIDefault:\fP not set or \fBdefault\fP (if the template exists)
+.SS storage
+.sp
+A data directory for storing zone files. A non\-absolute path is relative to
+the \fI\%knotd\fP startup directory.
+.sp
+\fIDefault:\fP \fB${localstatedir}/lib/knot\fP (configured with \fB\-\-with\-storage=path\fP)
+.SS file
+.sp
+A \fI\%path\fP to the zone file. It is also possible to use
+the following formatters:
+.INDENT 0.0
+.IP \(bu 2
+\fB%c[\fP\fIN\fP\fB]\fP or \fB%c[\fP\fIN\fP\fB\-\fP\fIM\fP\fB]\fP – Means the \fIN\fPth
+character or a sequence of characters beginning from the \fIN\fPth and ending
+with the \fIM\fPth character of the textual zone name (see \fB%s\fP). The
+indexes are counted from 0 from the left. All dots (including the terminal
+one) are considered. If the character is not available, the formatter has no effect.
+.IP \(bu 2
+\fB%l[\fP\fIN\fP\fB]\fP – Means the \fIN\fPth label of the textual zone name
+(see \fB%s\fP). The index is counted from 0 from the right (0 ~ TLD).
+If the label is not available, the formatter has no effect.
+.IP \(bu 2
+\fB%s\fP – Means the current zone name in the textual representation.
+The zone name doesn\(aqt include the terminating dot (the result for the root
+zone is the empty string!).
+.IP \(bu 2
+\fB%%\fP – Means the \fB%\fP character.
+.UNINDENT
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+Beware of special characters which are escaped or encoded in the \eDDD form
+where DDD is corresponding decimal ASCII code.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fI\%storage\fP\fB/%s.zone\fP
+.SS master
+.sp
+An ordered list of references \fI\%remote\fP and
+\fI\%remotes\fP to zone primary servers
+(formerly known as master servers).
+.sp
+\fIDefault:\fP not set
+.SS ddns\-master
+.sp
+A \fI\%reference\fP to a zone primary master where DDNS messages
+should be forwarded to. If not specified, the first \fI\%master\fP
+server is used.
+.sp
+If set to the empty value (\(dq\(dq), incoming DDNS messages aren\(aqt forwarded but are applied
+to the local zone instead, no matter if it is a secondary server. This is only allowed in
+combination with \fI\%dnssec\-signing\fP enabled.
+.sp
+\fIDefault:\fP not set
+.SS notify
+.sp
+An ordered list of references \fI\%remote\fP and
+\fI\%remotes\fP to secondary servers to which notify
+message is sent if the zone changes.
+.sp
+\fIDefault:\fP not set
+.SS acl
+.sp
+An ordered list of \fI\%references\fP to ACL rules which can allow
+or disallow zone transfers, updates or incoming notifies.
+.sp
+\fIDefault:\fP not set
+.SS master\-pin\-tolerance
+.sp
+If set to a nonzero value on a secondary, always request AXFR/IXFR from the same
+primary as the last time, effectively pinning one primary. Only when another
+primary is updated and the current one lags behind for the specified amount of time
+(defined by this option), change to the updated primary and force AXFR.
+.sp
+This option is useful when multiple primaries may have different zone history
+in their journals, making it unsafe to combine interchanged IXFR
+from different primaries.
+.sp
+\fIDefault:\fP 0
+.SS provide\-ixfr
+.sp
+If disabled, the server is forced to respond with AXFR to IXFR queries.
+If enabled, IXFR requests are responded normally.
+.sp
+\fIDefault:\fP \fBon\fP
+.SS semantic\-checks
+.sp
+Selects if extra zone semantic checks are used or impacts of the mandatory checks.
+.sp
+There are several mandatory checks which are always enabled and cannot be turned
+off. An error in a mandatory check causes the zone not to be loaded. Most of
+the mandatory checks can be weakened by setting \fBsoft\fP, which allows the zone to
+be loaded even if the check fails.
+.sp
+If enabled, extra checks are used. These checks don\(aqt prevent the zone from loading.
+.sp
+The mandatory checks are applied to zone files, zone transfers, and updates via
+control interface. The extra checks are applied to zone files only!
+.sp
+Mandatory checks:
+.INDENT 0.0
+.IP \(bu 2
+Missing SOA record at the zone apex (\fI\%RFC 1034\fP) (*)
+.IP \(bu 2
+An extra record exists together with a CNAME record except for RRSIG and NSEC (\fI\%RFC 1034\fP)
+.IP \(bu 2
+Multiple CNAME records with the same owner exist (\fI\%RFC 1034\fP)
+.IP \(bu 2
+DNAME record having a record under it (\fI\%RFC 6672\fP)
+.IP \(bu 2
+Multiple DNAME records with the same owner exist (\fI\%RFC 6672\fP)
+.IP \(bu 2
+NS record exists together with a DNAME record (\fI\%RFC 6672\fP)
+.IP \(bu 2
+DS record exists at the zone apex (\fI\%RFC 3658\fP)
+.UNINDENT
+.sp
+(*) The marked check can\(aqt be weakened by the soft mode. All other mandatory checks
+are subject to the optional soft mode.
+.sp
+Extra checks:
+.INDENT 0.0
+.IP \(bu 2
+Missing NS record at the zone apex
+.IP \(bu 2
+Missing glue A or AAAA record
+.IP \(bu 2
+Invalid DS or NSEC3PARAM record
+.IP \(bu 2
+CDS or CDNSKEY inconsistency
+.IP \(bu 2
+All other DNSSEC checks executed during \fI\%dnssec\-validation\fP
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+The soft mode allows the refresh event to ignore a CNAME response to a SOA
+query (malformed message) and triggers a zone bootstrap instead.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS zonefile\-sync
+.sp
+The time after which the current zone in memory will be synced with a zone file
+on the disk (see \fI\%file\fP). The server will serve the latest
+zone even after a restart using zone journal, but the zone file on the disk will
+only be synced after \fBzonefile\-sync\fP time has expired (or after manual zone
+flush). This is applicable when the zone is updated via IXFR, DDNS or automatic
+DNSSEC signing. In order to completely disable automatic zone file synchronization,
+set the value to \-1. In that case, it is still possible to force a manual zone flush
+using the \fB\-f\fP option.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If you are serving large zones with frequent updates where
+the immediate sync with a zone file is not desirable, increase the value.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB0\fP (immediate)
+.SS zonefile\-load
+.sp
+Selects how the zone file contents are applied during zone load.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – The zone file is not used at all.
+.IP \(bu 2
+\fBdifference\fP – If the zone contents are already available during server start or reload,
+the difference is computed between them and the contents of the zone file. This difference
+is then checked for semantic errors and applied to the current zone contents.
+.IP \(bu 2
+\fBdifference\-no\-serial\fP – Same as \fBdifference\fP, but the SOA serial in the zone file is
+ignored, the server takes care of incrementing the serial automatically.
+.IP \(bu 2
+\fBwhole\fP – Zone contents are loaded from the zone file.
+.UNINDENT
+.sp
+When \fBdifference\fP is configured and there are no zone contents yet (cold start
+and no zone contents in the journal), it behaves the same way as \fBwhole\fP\&.
+.sp
+\fIDefault:\fP \fBwhole\fP
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+See \fI\%Handling zone file, journal, changes, serials\fP for guidance on
+configuring these and related options to ensure reliable operation.
+.UNINDENT
+.UNINDENT
+.SS journal\-content
+.sp
+Selects how the journal shall be used to store zone and its changes.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – The journal is not used at all.
+.IP \(bu 2
+\fBchanges\fP – Zone changes history is stored in journal.
+.IP \(bu 2
+\fBall\fP – Zone contents and history is stored in journal.
+.UNINDENT
+.sp
+\fIDefault:\fP \fBchanges\fP
+.sp
+\fBWARNING:\fP
+.INDENT 0.0
+.INDENT 3.5
+When this option is changed, the journal still contains data respective to
+the previous setting. For example, changing it to \fBnone\fP does not purge
+the journal. Also, changing it from \fBall\fP to \fBchanges\fP
+does not cause the deletion of the zone\-in\-journal and the behaviour of the
+zone loading procedure might be different than expected. It is recommended
+to consider purging the journal when this option is changed.
+.UNINDENT
+.UNINDENT
+.SS journal\-max\-usage
+.sp
+Policy how much space in journal DB will the zone\(aqs journal occupy.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Journal DB may grow far above the sum of journal\-max\-usage across
+all zones, because of DB free space fragmentation.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB100M\fP (100 MiB)
+.SS journal\-max\-depth
+.sp
+Maximum history length of the journal.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Zone\-in\-journal changeset isn\(aqt counted to the limit.
+.UNINDENT
+.UNINDENT
+.sp
+\fIMinimum:\fP \fB2\fP
+.sp
+\fIDefault:\fP \fB20\fP
+.SS ixfr\-benevolent
+.sp
+If enabled, incoming IXFR is applied even when it contains removals of non\-existing
+or additions of existing records.
+.sp
+\fIDefault:\fP off
+.SS ixfr\-by\-one
+.sp
+Within incoming IXFR, process only one changeset at a time, not multiple together.
+This preserves the complete history in the journal and prevents the merging of
+changesets when multiple changesets are IXFRed simultaneously. However, this does not
+prevent the merging (or deletion) of old changesets in the journal to save space,
+as described in \fI\%journal behaviour\fP\&.
+.sp
+This option leads to increased server load when processing IXFR, including
+network traffic.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS ixfr\-from\-axfr
+.sp
+If a primary sends AXFR\-style\-IXFR upon an IXFR request, compute the difference
+and process it as an incremental zone update (e.g. by storing the changeset in
+the journal).
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS zone\-max\-size
+.sp
+Maximum size of the zone. The size is measured as size of the zone records
+in wire format without compression. The limit is enforced for incoming zone
+transfers and dynamic updates.
+.sp
+For incremental transfers (IXFR), the effective limit for the total size of
+the records in the transfer is twice the configured value. However the final
+size of the zone must satisfy the configured value.
+.sp
+\fIDefault:\fP unlimited
+.SS adjust\-threads
+.sp
+Parallelize internal zone adjusting procedures by using specified number of
+threads. This is useful with huge zones with NSEC3. Speedup observable at
+server startup and while processing NSEC3 re\-salt.
+.sp
+\fIDefault:\fP \fB1\fP (no extra threads)
+.SS dnssec\-signing
+.sp
+If enabled, automatic DNSSEC signing for the zone is turned on.
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS dnssec\-validation
+.sp
+If enabled, the zone contents are validated for being correctly signed
+(including NSEC/NSEC3 chain) with DNSSEC signatures every time the zone
+is loaded or changed (including AXFR/IXFR).
+.sp
+When the validation fails, the zone being loaded or update being applied
+is cancelled with an error, and either none or previous zone state is published.
+.sp
+List of DNSSEC checks:
+.INDENT 0.0
+.IP \(bu 2
+Every zone RRSet is correctly signed by at least one present DNSKEY.
+.IP \(bu 2
+DNSKEY RRSet is signed by KSK.
+.IP \(bu 2
+NSEC(3) RR exists for each name (unless opt\-out) with correct bitmap.
+.IP \(bu 2
+Every NSEC(3) RR is linked to the lexicographically next one.
+.UNINDENT
+.sp
+The validation is not affected by \fI\%dnssec\-policy\fP configuration,
+except for \fI\%signing\-threads\fP option, which specifies the number
+of threads for parallel validation.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Redundant or garbage NSEC3 records are ignored.
+.sp
+This mode is not compatible with \fI\%dnssec\-signing\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS dnssec\-policy
+.sp
+A \fI\%reference\fP to DNSSEC signing policy.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+A configured policy called \(dqdefault\(dq won\(aqt be used unless explicitly referenced.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP an imaginary policy with all default values
+.SS ds\-push
+.sp
+Per zone configuration of \fI\%ds\-push\fP\&. This option overrides possible
+per policy option.
+.sp
+\fIDefault:\fP not set
+.SS zonemd\-verify
+.sp
+On each zone load/update, verify that ZONEMD is present in the zone and valid.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+Zone digest calculation may take much time and CPU on large zones.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBoff\fP
+.SS zonemd\-generate
+.sp
+On each zone update, calculate ZONEMD and put it into the zone.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – No action regarding ZONEMD.
+.IP \(bu 2
+\fBzonemd\-sha384\fP – Generate ZONEMD using SHA384 algorithm.
+.IP \(bu 2
+\fBzonemd\-sha512\fP – Generate ZONEMD using SHA512 algorithm.
+.IP \(bu 2
+\fBremove\fP – Remove any ZONEMD from the zone apex.
+.UNINDENT
+.sp
+\fIDefault:\fP \fBnone\fP
+.SS serial\-policy
+.sp
+Specifies how the zone serial is updated after a dynamic update or
+automatic DNSSEC signing. If the serial is changed by the dynamic update,
+no change is made.
+.sp
+Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBincrement\fP – The serial is incremented according to serial number arithmetic.
+.IP \(bu 2
+\fBunixtime\fP – The serial is set to the current unix time.
+.IP \(bu 2
+\fBdateserial\fP – The 10\-digit serial (YYYYMMDDnn) is incremented, the first
+8 digits match the current iso\-date.
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If the resulting serial for \fBunixtime\fP or \fBdateserial\fP is lower than or
+equal to the current serial (this happens e.g. when migrating from other policy or
+frequent updates), the serial is incremented instead.
+.sp
+To avoid user confusion, use \fBdateserial\fP only if you expect at most
+100 updates per day per zone and \fBunixtime\fP only if you expect at most
+one update per second per zone.
+.sp
+Generated catalog zones use \fBunixtime\fP only.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBincrement\fP (\fBunixtime\fP for generated catalog zones)
+.SS serial\-modulo
+.sp
+Specifies that the zone serials shall be congruent by specified modulo.
+The option value must be a string in the format \fBR/M\fP, where \fBR < M <= 256\fP are
+positive integers. Whenever the zone serial is incremented, it is ensured
+that \fBserial % M == R\fP\&. This can be useful in the case of multiple inconsistent
+primaries, where distinct zone serial sequences prevent cross\-master\-IXFR
+by any secondary.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+In order to ensure the congruent policy, this option is only allowed
+with \fI\%DNSSEC signing enabled\fP and
+\fI\%zonefile\-load\fP to be either \fBdifference\-no\-serial\fP or \fBnone\fP\&.
+.sp
+Because the zone serial effectively always increments by \fBM\fP instead of
+\fB1\fP, it is not recommended to use \fBdateserial\fP \fI\%serial\-policy\fP
+or even \fBunixtime\fP in case of rapidly updated zone.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fB0/1\fP
+.SS reverse\-generate
+.sp
+This option triggers the automatic generation of reverse PTR records based on
+A/AAAA records in the specified zone. The entire generated zone is automatically
+stored in the journal.
+.sp
+Current limitations:
+.INDENT 0.0
+.IP \(bu 2
+Only one zone to be reversed can be specified.
+.IP \(bu 2
+Is slow for large zones (even when changing a little).
+.UNINDENT
+.sp
+\fIDefault:\fP none
+.SS refresh\-min\-interval
+.sp
+Forced minimum zone refresh interval (in seconds) to avoid flooding primary server.
+.sp
+\fIMinimum:\fP \fB2\fP
+.sp
+\fIDefault:\fP \fB2\fP
+.SS refresh\-max\-interval
+.sp
+Forced maximum zone refresh interval (in seconds).
+.sp
+\fIDefault:\fP not set
+.SS retry\-min\-interval
+.sp
+Forced minimum zone retry interval (in seconds) to avoid flooding primary server.
+.sp
+\fIMinimum:\fP \fB1\fP
+.sp
+\fIDefault:\fP \fB1\fP
+.SS retry\-max\-interval
+.sp
+Forced maximum zone retry interval (in seconds).
+.sp
+\fIDefault:\fP not set
+.SS expire\-min\-interval
+.sp
+Forced minimum zone expire interval (in seconds) to avoid flooding primary server.
+.sp
+\fIMinimum:\fP \fB3\fP
+.sp
+\fIDefault:\fP \fB3\fP
+.SS expire\-max\-interval
+.sp
+Forced maximum zone expire interval (in seconds).
+.sp
+\fIDefault:\fP not set
+.SS catalog\-role
+.sp
+Trigger zone catalog feature. Possible values:
+.INDENT 0.0
+.IP \(bu 2
+\fBnone\fP – Not a catalog zone.
+.IP \(bu 2
+\fBinterpret\fP – A catalog zone which is loaded from a zone file or XFR,
+and member zones shall be configured based on its contents.
+.IP \(bu 2
+\fBgenerate\fP – A catalog zone whose contents are generated according to
+assigned member zones.
+.IP \(bu 2
+\fBmember\fP – A member zone that is assigned to one generated catalog zone.
+.UNINDENT
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+If set to \fBgenerate\fP, the \fI\%zonefile\-load\fP option has no effect
+since a zone file is never loaded.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP \fBnone\fP
+.SS catalog\-template
+.sp
+For the catalog member zones, the specified configuration template will be applied.
+.sp
+Multiple catalog templates may be defined. The first one is used unless the member zone
+has the \fIgroup\fP property defined, matching another catalog template.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option must be set if and only if \fI\%catalog\-role\fP is \fIinterpret\fP\&.
+.sp
+Nested catalog zones aren\(aqt supported. Therefore catalog templates can\(aqt use
+\fI\%catalog\-template\fP, \fI\%catalog\-role\fP, \fI\%catalog\-zone\fP,
+and \fI\%catalog\-group\fP options.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS catalog\-zone
+.sp
+Assign this member zone to specified generated catalog zone.
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option must be set if and only if \fI\%catalog\-role\fP is \fImember\fP\&.
+.sp
+The referenced catalog zone must exist and have \fI\%catalog\-role\fP set to \fIgenerate\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS catalog\-group
+.sp
+Assign this member zone to specified catalog group (configuration template).
+.sp
+\fBNOTE:\fP
+.INDENT 0.0
+.INDENT 3.5
+This option has effect if and only if \fI\%catalog\-role\fP is \fImember\fP\&.
+.UNINDENT
+.UNINDENT
+.sp
+\fIDefault:\fP not set
+.SS module
+.sp
+An ordered list of references to query modules in the form of \fImodule_name\fP or
+\fImodule_name/module_id\fP\&. These modules apply only to the current zone queries.
+.sp
+\fIDefault:\fP not set
+.SH AUTHOR
+CZ.NIC Labs <https://www.knot-dns.cz>
+.SH COPYRIGHT
+Copyright 2010–2024, CZ.NIC, z.s.p.o.
+.\" Generated by docutils manpage writer.
+.