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Linux 2.6 - man page for pppoe-discovery (linux section 8)

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PPPOE-DISCOVERY(8)							       PPPOE-DISCOVERY(8)

NAME
       pppoe-discovery - perform PPPoE discovery

SYNOPSIS
       pppoe-discovery [ options ]
       pppoe-discovery { -V | -h }

DESCRIPTION
       pppoe-discovery performs the same discovery process as pppoe, but does not initiate a ses-
       sion.  It sends a PADI packet and then prints the names of access  concentrators  in  each
       PADO packet it receives.

OPTIONS
       -I interface
	      The  -I  option  specifies the Ethernet interface to use.  Under Linux, it is typi-
	      cally eth0 or eth1.  The interface should be "up" before you start pppoe-discovery,
	      but should not be configured to have an IP address.  The default interface is eth0.

       -D file_name
	      The -D option causes every packet to be dumped to the specified file_name.  This is
	      intended for debugging only.

       -U
	      Causes pppoe-discovery to use the Host-Uniq tag in  its  discovery  packets.   This
	      lets  you  run  multiple	instances  of pppoe-discovery and/or pppoe without having
	      their discovery packets interfere with one another.  You must supply this option to
	      all instances that you intend to run simultaneously.

       -S service_name
	      Specifies  the  desired service name.  pppoe-discovery will only accept access con-
	      centrators which can provide the specified service.  In most cases, you should  not
	      specify  this  option.  Use it only if you know that there are multiple access con-
	      centrators or know that you need a specific service name.

       -C ac_name
	      Specifies the desired access concentrator name.  pppoe-discovery will  only  accept
	      the  specified  access  concentrator.   In  most cases, you should not specify this
	      option.  Use it only if you know that there are multiple access concentrators.   If
	      both the -S and -C options are specified, they must both match.

       -A
	      This option is accepted for compatibility with pppoe, but has no effect.

       -V | -h
	      Either  of  these  options  causes  pppoe-discovery to print its version number and
	      usage information, then exit.

AUTHORS
       pppoe-discovery was written by Marco d'Itri <md@linux.it>, based  on  pppoe  by	David  F.
       Skoll <dfs@roaringpenguin.com>.

SEE ALSO
       pppoe(8), pppoe-sniff(8)

					 22 January 2006		       PPPOE-DISCOVERY(8)
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