pppoe-discovery(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | AUTHORS | SEE ALSO | COLOPHON

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
       receives.

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.

       -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 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.

       -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         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 2025-02-02.  (At that time,
       the date of the most recent commit that was found in the
       repository was 2025-01-23.)  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

                                                       PPPOE-DISCOVERY(8)