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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | USAGE EXAMPLES | SEE ALSO | AUTHOR | COLOPHON |
RTMON(8) System Manager's Manual RTMON(8)
rtmon - listens to and monitors RTnetlink
rtmon [ options ] file FILE [ all | LISTofOBJECTS ]
This manual page documents briefly the rtmon command.
rtmon listens on netlink socket and monitors routing table changes.
rtmon can be started before the first network configuration command
is issued. For example if you insert:
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.
rtmon supports the following options:
-Version
Print version and exit.
help Show summary of options.
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.
-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.
-4 Use IPv4. Shortcut for -family inet.
-6 Use IPv6. Shortcut for -family inet6.
-0 Use a special family identifier meaning that no networking
protocol is involved. Shortcut for -family link.
# rtmon file /var/log/rtmon.log
Log to file /var/log/rtmon.log, then run:
# ip monitor file /var/log/rtmon.log
to display logged output from file.
ip(8)
rtmon was written by Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>.
This manual page was written by Michael Prokop <mika@grml.org>, for
the Debian project (but may be used by others).
This page is part of the iproute2 (utilities for controlling TCP/IP
networking and traffic) project. Information about the project can
be found at
⟨http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2⟩.
If you have a bug report for this manual page, send it to
netdev@vger.kernel.org, shemminger@osdl.org. This page was obtained
from the project's upstream Git repository
⟨git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git⟩
on 2017-07-05. If you discover any rendering problems in this HTML
version of the page, or you believe there is a better or more up-to-
date source for the page, or you have corrections or improvements to
the information in this COLOPHON (which is not part of the original
manual page), send a mail to man-pages@man7.org
RTMON(8)