PPPOE.CONF(5)PPPOE.CONF(5)NAME
ifcfg-ppp0 - Configuration file used by adsl-start(8), adsl-stop(8),
adsl-status(8) and adsl-connect(8).
DESCRIPTION
/etc/sysconfig/network-scripts/ifcfg-ppp0 is a shell script which con‐
tains configuration information for Roaring Penguin's ADSL scripts.
Note that pppoe.conf is used only by the various adsl-* shell scripts,
not by pppoe itself.
ifcfg-ppp0 consists of a sequence of shell variable assignments. The
variables and their meanings are:
ETH The Ethernet interface connected to the ADSL modem (for example,
eth0).
USER The ADSL user-id (for example, b1xxnxnx@sympatico.ca).
SERVICENAME
If this is not blank, then it is passed with the -S option to
pppoe. It specifies a service name to ask for. Usually, you
should leave it blank.
ACNAME If this is not blank, then it is passed with the -C option to
pppoe. It specifies the name of the access concentrator to con‐
nect to. Usually, you should leave it blank.
DEMAND If set to a number, the link is activated on demand and brought
down after after DEMAND seconds. If set to no, the link is kept
up all the time rather than being activated on demand.
DNSTYPE
One of NOCHANGE, SPECIFY or SERVER. If set to NOCHANGE, adsl-
connect will not adjust the DNS setup in any way. If set to
SPECIFY, it will re-write /etc/resolv.conf with the values of
DNS1 and DNS2. If set to SERVER, it will supply the usepeerdns
option to pppd, and make a symlink from /etc/resolv.conf to
/etc/ppp/resolv.conf.
DNS1, DNS2
IP addresses of DNS servers if you use DNSTYPE=SPECIFY.
USERCTL
If the line USERCTL=yes (exactly like that; no whitespace or
comments) appears in the configuration file, then /sbin/ifup
will allow non-root users to bring the conneciton up or down.
PEERDNS
If set to "yes", then adsl-connect will supply the usepeerdns
option to pppd, which causes it to obtain DNS server addresses
from the peer and create a new /etc/resolv.conf file. Other‐
wise, adsl-connect will not supply this option, and pppd will
not modify /etc/resolv.conf.
CONNECT_POLL
How often (in seconds) adsl-start should check to see if a new
PPP interface has come up. If this is set to 0, the adsl-start
simply initiates the PPP session, but does not wait to see if it
comes up successfully.
CONNECT_TIMEOUT
How long (in seconds) adsl-start should wait for a new PPP
interface to come up before concluding that adsl-connect has
failed and killing the session.
PING A character which is echoed every CONNECT_POLL seconds while
adsl-start is waiting for the PPP interface to come up.
FORCEPING
A character which is echoed every CONNECT_POLL seconds while
adsl-start is waiting for the PPP interface to come up. Similar
to PING, but the character is echoed even if adsl-start's stan‐
dard output is not a tty.
PIDFILE
A file in which to write the process-ID of the adsl-connect
process (for example, /var/run/pppoe.pid). Two additional files
($PIDFILE.pppd and $PIDFILE.pppoe) hold the process-ID's of the
pppd and pppoe processes, respectively.
SYNCHRONOUS
An indication of whether or not to use synchronous PPP (yes or
no). Synchronous PPP is safe on Linux machines with the n_hdlc
line discipline. (If you have a file called "n_hdlc.o" in your
modules directory, you have the line discipline.) It is not
recommended on other machines or on Linux machines without the
n_hdlc line discipline due to some known and unsolveable race
conditions in a user-mode client.
CLAMPMSS
The value at which to "clamp" the advertised MSS for TCP ses‐
sions. The default of 1412 should be fine.
LCP_INTERVAL
How often (in seconds) pppd sends out LCP echo-request packets.
LCP_FAILURE
How many unanswered LCP echo-requests must occur before pppd
concludes the link is dead.
PPPOE_TIMEOUT
If this many seconds elapse without any activity seen by pppoe,
then pppoe exits.
FIREWALL
One of NONE, STANDALONE or MASQUERADE. If NONE, then adsl-con‐
nect does not add any firewall rules. If STANDALONE, then it
clears existing firewall rules and sets up basic rules for a
standalone machine. If MASQUERADE, then it clears existing
firewall rules and sets up basic rules for an Internet gateway.
If you run services on your machine, these simple firewall
scripts are inadequate; you'll have to make your own firewall
rules and set FIREWALL to NONE.
PPPOE_EXTRA
Any extra arguments to pass to pppoe
PPPD_EXTRA
Any extra arguments to pass to pppd
LINUX_PLUGIN
If non-blank, the full path of the Linux kernel-mode PPPoE plug‐
in (typically /etc/ppp/plugins/rp-pppoe.so.) This forces adsl-
connect to use kernel-mode PPPoE on Linux 2.4.x systems. This
code is experimental and unsupported. Use of the plugin causes
adsl-connect to ignore CLAMPMSS, PPPOE_EXTRA, SYNCHRONOUS and
PPPOE_TIMEOUT.
By using different configuration files with different PIDFILE settings,
you can manage multiple PPPoE connections. Just specify the configura‐
tion file as an argument to adsl-start and adsl-stop.
SEE ALSOpppoe(8), adsl-connect(8), adsl-start(8), adsl-stop(8), pppd(8), adsl-
setup(8), pppoe-wrapper(8)4th Berkeley Distribution 21 February 2000PPPOE.CONF(5)
