RTMON(8)						      System Manager's Manual							  RTMON(8)

NAME

       rtmon - listens to and monitors RTnetlink

SYNOPSIS

       rtmon [ options ] file FILE [ all | LISTofOBJECTS ]

DESCRIPTION

       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.

OPTIONS

       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.

USAGE EXAMPLES

       # 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.

SEE ALSO

       ip(8)

AUTHOR

       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).

																	  RTMON(8)