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+.TH RTMON 8
+.SH NAME
+rtmon \- listens to and monitors RTnetlink
+.SH SYNOPSIS
+.B rtmon
+.RI "[ options ] file FILE [ all | LISTofOBJECTS ]"
+.SH DESCRIPTION
+This manual page documents briefly the
+.B rtmon
+command.
+.PP
+.B rtmon
+listens on
+.I netlink
+socket and monitors routing table changes.
+
+.I rtmon
+can be started before the first network configuration command is issued.
+For example if you insert:
+
+.B rtmon file /var/log/rtmon.log
+
+in a startup script, you will be able to view the full history later.
+Certainly, it is possible to start rtmon at any time. It prepends the history with the state snapshot dumped at the moment of starting.
+
+.SH OPTIONS
+.I rtmon supports the following options:
+.TP
+.B \-Version
+Print version and exit.
+.TP
+.B help
+Show summary of options.
+.TP
+.B file FILE [ all | LISTofOBJECTS ]
+Log output to FILE. LISTofOBJECTS is the list of object types that we
+want to monitor. It may contain 'link', 'address', 'route'
+and 'all'. 'link' specifies the network device, 'address' the protocol
+(IP or IPv6) address on a device, 'route' the routing table entry
+and 'all' does what the name says.
+.TP
+.B \-family [ inet | inet6 | link | help ]
+Specify protocol family. 'inet' is IPv4, 'inet6' is IPv6, 'link'
+means that no networking protocol is involved and 'help' prints usage information.
+.TP
+.B \-4
+Use IPv4. Shortcut for -family inet.
+.TP
+.B \-6
+Use IPv6. Shortcut for -family inet6.
+.TP
+.B \-0
+Use a special family identifier meaning that no networking protocol is involved. Shortcut for -family link.
+.SH USAGE EXAMPLES
+.TP
+.B # rtmon file /var/log/rtmon.log
+Log to file /var/log/rtmon.log, then run:
+.TP
+.B # ip monitor file /var/log/rtmon.log
+to display logged output from file.
+.SH SEE ALSO
+.BR ip (8)
+.SH AUTHOR
+.B rtmon
+was written by Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>.
+.PP
+This manual page was written by Michael Prokop <mika@grml.org>,
+for the Debian project (but may be used by others).