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 lquprq 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.
