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 session. 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 typically 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 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
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