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Bring the description of the sysctl(8) variable

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net.graph.nonstandard_pppoe into accord with the reality.

MFC after:	1 week
This commit is contained in:
Yaroslav Tykhiy 2003-12-19 16:42:35 +00:00
parent e883537ce7
commit db2db5fe18
1 changed files with 20 additions and 16 deletions
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36
share/man/man4/ng_pppoe.4
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@ -182,22 +182,26 @@ This node shuts down upon receipt of a
control message, when all session have been disconnected or when the control message, when all session have been disconnected or when the
.Dv ethernet .Dv ethernet
hook is disconnected. hook is disconnected.
.Sh SYSCTLs .Sh SYSCTL VARIABLES
If you are one of the unfortunate people who have an ISP that The variable
uses some "PPPoE" equipment from (I believe) 3com, and who have to .Va net.graph.nonstandard_pppoe
use a different ethertype on PPPoE packets controls certain aspects of
(hey why not change it from the standard for .Nm
no reason?) then after you have kldloaded or compiled in your PPPoE node, operation.
you may have to do the following sysctl: Its default value of \-1 corresponds to standard mode
.Bd -literal and should suit nearly all purposes.
(kldload netgraph) A value of 1 will turn on compatibility with some particularly
(kldload ng_pppoe) broken PPPoE implementations using nonstandard "ethertypes"
sysctl net.graph.nonstandard_pppoe=1 in PPPoE packets.
.Ed When in this mode, your PPPoE node will be unable to communicate
.Pp with standard nodes.
to enable the alternate ethertypes. A value of 0 is deprecated.
Then phone your ISP and ask them It was intended to turn on autodetection of the proper mode.
why you need to set that option for you to be able to connect. .Bf -emphasis
It will make your entire PPPoE network vulnerable
to a denial-of-service attack,
therefore its use is strongly discouraged.
.Ef
.Sh EXAMPLES .Sh EXAMPLES
The following code uses The following code uses
.Dv libnetgraph .Dv libnetgraph