pppoe-discovery(8) — Linux manual page


PPPOE-DISCOVERY(8)       System Manager's Manual      PPPOE-DISCOVERY(8)

NAME         top

       pppoe-discovery - perform PPPoE discovery

SYNOPSIS         top

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

DESCRIPTION         top

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

OPTIONS         top

       -I interface
              The -I option specifies the Ethernet interface to use.
              Under Linux, it is typically eth0 or eth1.  The interface
              should be “up” before you start pppoe-discovery, but
              should not be configured to have an IP address.  This
              option is mandatory.

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

              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

       -S service_name
              Specifies the desired service name.  pppoe-discovery will
              only accept access concentrators 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 concentrators 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.

              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         top

       pppoe-discovery was written by Marco d'Itri <md@linux.it>, based
       on pppoe by Dianne Skoll <dianne@skoll.ca>.

SEE ALSO         top

       pppoe(8), pppoe-sniff(8)

COLOPHON         top

       This page is part of the ppp (An implementation of the Point-to-
       Point Protocol (PPP)) project.  Information about the project can
       be found at ⟨https://ppp.samba.org/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://github.com/paulusmack/ppp/issues⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨https://github.com/paulusmack/ppp⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2023-12-21.)  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