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NAME

       atmarpd - ATMARP demon

SYNOPSIS

       atmarpd [-b] [-d] [-D directory] [-l logfile] [-m] [-n]
       atmarpd -V

DESCRIPTION

       atmarpd  implements  the  ATMARP  protocol  as  specified  in RFC1577 and RFC1755. Address
       resolution requests are sent from the kernel (using a comparably simple protocol)  to  the
       ATMARP demon, which then performs the dialog with the network.

       atmarpd  can  operate  as  an ATMARP client and as an ATMARP server.  If also supports the
       concurrent use of several IP over ATM interfaces.

       atmarpd is configured from the command line using the atmarp program. Unless debugging  is
       enabled, the ATMARP table is written after every change to the file /var/run/atmarpd.table
       (or to a file with the same name in a different directory, if the -D option is used).

       Note that atmarpd disables support for SVCs if signaling is not available at  start  time,
       i.e. if atmsigd is not running.

OPTIONS

       -b     Run in background (i.e. in a forked child process) after initializing.

       -d     Enables (lots of) debugging output. By default, atmarpd is comparably quiet.

       -D dump_dir
              Changes  the  directory where atmarpd writes its table (atmarpd.table). By default,
              /var/run is used.

       -l logfile
              Write diagnostic messages to the specified file instead of to standard  error.  The
              special name syslog is used to send diagnostics to the system logger.

       -m     Enables  merging of incoming calls if the address is known.  An incoming connection
              on which no InARP reply has been received yet, but which  originates  from  an  ATM
              address  for  which  an ATMARP entry already exists, is automatically added to that
              entry. This assumes that there is a 1:1 mapping between  IP  addresses  and  ATMARP
              addresses. By default, this assumption is not made, which frequently results in the
              setup of duplicate connections. Note that RFC1577 requires that  an  ATMARP  server
              sends  an  InARP  request  on an incoming connection. Merging may therefore violate
              RFC1577 in this case.

       -n     Prints addresses in numeric format only, i.e. no address  to  name  translation  is
              attempted.

       -V     Prints the version number of atmarpd on standard output and exits.

FILES

       /var/run/atmarpd.table   ATMARP table
       /proc/atm/arp            table of currently active IP over ATM VCs

BUGS

       atmarpd removes ATMARP entries from the kernel table while refreshing them.

AUTHOR

       Werner Almesberger, EPFL ICA <werner.almesberger@epfl.ch>

SEE ALSO

       atmarp(8), atmsigd(8)