27.4. Using PPP over Ethernet (PPPoE)

This section describes how to set up PPP over Ethernet (PPPoE).

Here is an example of a working ppp.conf:

default:
  set log Phase tun command # you can add more detailed logging if you wish
  set ifaddr 10.0.0.1/0 10.0.0.2/0

name_of_service_provider:
  set device PPPoE:xl1 # replace xl1 with your Ethernet device
  set authname YOURLOGINNAME
  set authkey YOURPASSWORD
  set dial
  set login
  add default HISADDR

As root, run:

# ppp -ddial name_of_service_provider

Add the following to /etc/rc.conf:

ppp_enable="YES"
ppp_mode="ddial"
ppp_nat="YES"	# if you want to enable nat for your local network, otherwise NO
ppp_profile="name_of_service_provider"

27.4.1. Using a PPPoE Service Tag

Sometimes it will be necessary to use a service tag to establish the connection. Service tags are used to distinguish between different PPPoE servers attached to a given network.

Any required service tag information should be in the documentation provided by the ISP.

As a last resort, one could try installing the net/rr-pppoe package or port. Bear in mind however, this may de-program your modem and render it useless, so think twice before doing it. Simply install the program shipped with the modem. Then, access the System menu from the program. The name of the profile should be listed there. It is usually ISP.

The profile name (service tag) will be used in the PPPoE configuration entry in ppp.conf as the provider part of the set device command (see the ppp(8) manual page for full details). It should look like this:

set device PPPoE:xl1:ISP

Do not forget to change xl1 to the proper device for the Ethernet card.

Do not forget to change ISP to the profile.

For additional information, refer to Cheaper Broadband with FreeBSD on DSL by Renaud Waldura.

27.4.2. PPPoE with a 3Com® HomeConnect® ADSL Modem Dual Link

This modem does not follow the PPPoE specification defined in RFC 2516.

In order to make FreeBSD capable of communicating with this device, a sysctl must be set. This can be done automatically at boot time by updating /etc/sysctl.conf:

net.graph.nonstandard_pppoe=1

or can be done immediately with the command:

# sysctl net.graph.nonstandard_pppoe=1

Unfortunately, because this is a system-wide setting, it is not possible to talk to a normal PPPoE client or server and a 3Com® HomeConnect® ADSL Modem at the same time.

All FreeBSD documents are available for download at http://ftp.FreeBSD.org/pub/FreeBSD/doc/

Questions that are not answered by the documentation may be sent to <freebsd-questions@FreeBSD.org>.
Send questions about this document to <freebsd-doc@FreeBSD.org>.