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xt_iface: allow matching against incoming/outgoing interface

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This commit is contained in:
Jan Engelhardt
2010-10-31 01:38:12 +02:00
parent 6733265358
commit db76ea9a5c
5 changed files with 73 additions and 22 deletions
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17
extensions/libxt_iface.man
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@@ -1,7 +1,20 @@
Allows you to check interface states.
Allows you to check interface states. First, an interface needs to be selected
for comparison. Exactly one option of the following three must be specified:
.TP
\fB\-\-iface\fP \fIname\fP
Check the states on the given interface. This option is required.
Check the states on the given interface.
.TP
\fB\-\-dev\-in\fP
Check the states on the interface on which the packet came in. If the input
device is not set, because for example you are using \-m iface in the OUTPUT
chain, this submatch returns false.
.TP
\fB\-\-dev\-out\fP
Check the states on the interface on which the packet will go out. If the
output device is not set, because for example you are using \-m iface in the
INPUT chain, this submatch returns false.
.PP
Following that, one can select the interface properties to check for:
.TP
[\fB!\fP] \fB\-\-up\fP, [\fB!\fP] \fB\-\-down\fP
Check the UP flag.