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+.\" Man page generated from reStructuredText.
+.
+.TH "KNSUPDATE" "1" "@RELEASE_DATE@" "@VERSION@" "Knot DNS"
+.SH NAME
+knsupdate \- Dynamic DNS update utility
+.
+.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
+..
+.SH SYNOPSIS
+.sp
+\fBknsupdate\fP [\fIoptions\fP] [\fIfilename\fP]
+.SH DESCRIPTION
+.sp
+This utility sends Dynamic DNS update messages to a DNS server. Update content
+is read from a file (if the parameter \fIfilename\fP is given) or from the standard
+input.
+.sp
+The format of updates is textual and is made up of commands. Every command is
+placed on the separate line of the input. Lines starting with a semicolon are
+comments and are not processed.
+.SS Options
+.INDENT 0.0
+.TP
+\fB\-d\fP
+Enable debug messages.
+.TP
+\fB\-h\fP, \fB\-\-help\fP
+Print the program help.
+.TP
+\fB\-k\fP \fIkeyfile\fP
+Use the TSIG key stored in a file \fIkeyfile\fP to authenticate the request. The
+file should contain the key in the same format, which is accepted by the
+\fB\-y\fP option.
+.TP
+\fB\-p\fP \fIport\fP
+Set the port to use for connections to the server (if not explicitly specified
+in the update). The default is 53.
+.TP
+\fB\-r\fP \fIretries\fP
+The number of retries for UDP requests. The default is 3.
+.TP
+\fB\-t\fP \fItimeout\fP
+The total timeout (for all UDP update tries) of the update request in seconds.
+The default is 12. If set to zero, the timeout is infinite.
+.TP
+\fB\-v\fP
+Use a TCP connection.
+.TP
+\fB\-V\fP, \fB\-\-version\fP
+Print the program version.
+.TP
+\fB\-y\fP [\fIalg\fP:]\fIname\fP:\fIkey\fP
+Use the TSIG key with a name \fIname\fP to authenticate the request. The \fIalg\fP
+part specifies the algorithm (the default is hmac\-sha256) and \fIkey\fP specifies
+the shared secret encoded in Base64.
+.UNINDENT
+.SS Commands
+.INDENT 0.0
+.TP
+\fBserver\fP \fIname\fP [\fIport\fP]
+Specifies a receiving server of the dynamic update message. The \fIname\fP parameter
+can be either a host name or an IP address. If the \fIport\fP is not specified,
+the default port is used. The default port value can be controlled using
+the \fB\-p\fP program option.
+.TP
+\fBlocal\fP \fIaddress\fP [\fIport\fP]
+Specifies outgoing \fIaddress\fP and \fIport\fP\&. If no local is specified, the
+address and port are set by the system automatically. The default port number
+is 0.
+.TP
+\fBzone\fP \fIname\fP
+Specifies that all updates are done within a zone \fIname\fP\&. If not used,
+the default zone is the root zone.
+.TP
+\fBorigin\fP \fIname\fP
+Specifies fully qualified domain name suffix which is appended to non\-fqd
+owners in update commands. The default origin is the root zone.
+.TP
+\fBclass\fP \fIname\fP
+Sets \fIname\fP as the default class for all updates. If not used, the default
+class is IN.
+.TP
+\fBttl\fP \fIvalue\fP
+Sets \fIvalue\fP as the default TTL (in seconds). If not used, the default value
+is 0.
+.TP
+\fBkey\fP [\fIalg\fP:]\fIname\fP \fIkey\fP
+Specifies the TSIG \fIkey\fP named \fIname\fP to authenticate the request. An optional
+\fIalg\fP algorithm can be specified. This command has the same effect as
+the program option \fB\-y\fP\&.
+.TP
+[\fBprereq\fP] \fBnxdomain\fP \fIname\fP
+Adds a prerequisite for a non\-existing record owned by \fIname\fP\&.
+.TP
+[\fBprereq\fP] \fByxdomain\fP \fIname\fP
+Adds a prerequisite for an existing record owned by \fIname\fP\&.
+.TP
+[\fBprereq\fP] \fBnxrrset\fP \fIname\fP [\fIclass\fP] \fItype\fP
+Adds a prerequisite for a non\-existing record of the \fItype\fP owned by \fIname\fP\&.
+Internet \fIclass\fP is expected.
+.TP
+[\fBprereq\fP] \fByxrrset\fP \fIname\fP [\fIclass\fP] \fItype\fP [\fIdata\fP]
+Adds a prerequisite for an existing record of the \fItype\fP owned by \fIname\fP
+with optional \fIdata\fP\&. Internet \fIclass\fP is expected.
+.TP
+[\fBupdate\fP] \fBadd\fP \fIname\fP [\fIttl\fP] [\fIclass\fP] \fItype\fP \fIdata\fP
+Adds a request to add a new resource record into the zone.
+Please note that if the \fIname\fP is not fully qualified domain name, the
+current origin name is appended to it.
+.TP
+[\fBupdate\fP] \fBdel\fP[\fBete\fP] \fIname\fP [\fIttl\fP] [\fIclass\fP] [\fItype\fP] [\fIdata\fP]
+Adds a request to remove all (or matching \fIclass\fP, \fItype\fP or \fIdata\fP)
+resource records from the zone. There is the same requirement for the \fIname\fP
+parameter as in \fBupdate add\fP command. The \fIttl\fP item is ignored.
+.TP
+\fBshow\fP
+Displays current content of the update message.
+.TP
+\fBsend\fP
+Sends the current update message and cleans the list of updates.
+.TP
+\fBanswer\fP
+Displays the last answer from the server.
+.TP
+\fBdebug\fP
+Enable debugging. This command has the same meaning as the \fB\-d\fP program option.
+.TP
+\fBquit\fP
+Quit the program.
+.UNINDENT
+.SH NOTES
+.sp
+Options \fB\-k\fP and \fB\-y\fP can not be used simultaneously.
+.sp
+Dnssec\-keygen keyfile format is not supported. Use \fBkeymgr(8)\fP instead.
+.sp
+Zone name/server guessing is not supported if the zone name/server is not specified.
+.sp
+Empty line doesn\(aqt send the update.
+.SH EXIT VALUES
+.sp
+Exit status of 0 means successful operation. Any other exit status indicates
+an error.
+.SH EXAMPLES
+.INDENT 0.0
+.IP 1. 3
+Send one update of the zone example.com to the server 192.168.1.1. The update
+contains two new records:
+.INDENT 3.0
+.INDENT 3.5
+.sp
+.nf
+.ft C
+$ knsupdate
+> server 192.168.1.1
+> zone example.com.
+> origin example.com.
+> ttl 3600
+> add test1.example.com. 7200 A 192.168.2.2
+> add test2 TXT "hello"
+> show
+> send
+> answer
+> quit
+.ft P
+.fi
+.UNINDENT
+.UNINDENT
+.UNINDENT
+.SH SEE ALSO
+.sp
+\fBkdig(1)\fP, \fBkhost(1)\fP, \fBkeymgr(8)\fP\&.
+.SH AUTHOR
+CZ.NIC Labs <https://www.knot-dns.cz>
+.SH COPYRIGHT
+Copyright 2010–2021, CZ.NIC, z.s.p.o.
+.\" Generated by docutils manpage writer.
+.