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Diffstat (limited to 'share/man/man4/pppoe.4')
| -rw-r--r-- | share/man/man4/pppoe.4 | 36 |
1 files changed, 13 insertions, 23 deletions
diff --git a/share/man/man4/pppoe.4 b/share/man/man4/pppoe.4 index f22b9af9aa5..3a426710385 100644 --- a/share/man/man4/pppoe.4 +++ b/share/man/man4/pppoe.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: pppoe.4,v 1.32 2016/08/16 08:56:28 mpi Exp $ +.\" $OpenBSD: pppoe.4,v 1.33 2017/03/22 21:37:24 jmc Exp $ .\" $NetBSD: pppoe.4,v 1.26 2003/10/02 07:06:36 wiz Exp $ .\" .\" Copyright (c) 2002 The NetBSD Foundation, Inc. @@ -28,7 +28,7 @@ .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE .\" POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: August 16 2016 $ +.Dd $Mdocdate: March 22 2017 $ .Dt PPPOE 4 .Os .Sh NAME @@ -125,33 +125,23 @@ every address suggested by the peer will be accepted. To wildcard the local address set it to 0.0.0.0; to wildcard the remote address set it to 0.0.0.1. .Sh KERNEL OPTIONS -A .Nm -enabled kernel will not interfere with other PPPoE implementations +does not interfere with other PPPoE implementations running on the same machine. -Under special circumstances -(details below) this is not desirable, so the +However under some circumstances +(such as after a crash or power failure) +the peer device might initially refuse to +reestablish a new PPPoE connection +because there is already an open session. +This would be indicated by the client sending a high number of PADI packets +before successfully connecting. +The .Nm driver can be told to kill all unknown PPPoE sessions -received by the Ethernet interface used for a configured -.Nm -interface. -To do this, -add the following to your kernel config file: +by sending a PADT packet to explicitly terminate the old session. +Add the following to the kernel config file: .Pp .Dl option PPPOE_TERM_UNKNOWN_SESSIONS -.Pp -This option is only useful if you have a static IP address assigned and -your ISP does not use LCP echo requests to monitor the link status. -After a crash or power failure the peer device still tries to send data to -the no longer active session on your computer, and might refuse to -reestablish a new connection, because there already is an open session. -On receipt of such packets, the -.Nm -driver with this option set will send a PADT packet -(request to terminate the session). -The peer will immediately disconnect -the orphaned session and allow a new one to be established. .Sh MTU/MSS ISSUES Problems can arise on machines with private IPs connecting to the Internet via a machine running both |