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-rw-r--r--extensions/libxt_MARK.man3
1 files changed, 2 insertions, 1 deletions
diff --git a/extensions/libxt_MARK.man b/extensions/libxt_MARK.man
index 7bb05bed..98be812b 100644
--- a/extensions/libxt_MARK.man
+++ b/extensions/libxt_MARK.man
@@ -1,6 +1,7 @@
This target is used to set the Netfilter mark value associated with the packet.
The target can only be used in the \fBmangle\fR table. It can, for example, be
-used in conjunction with routing based on fwmark (needs iproute2).
+used in conjunction with routing based on fwmark (needs iproute2). The mark
+field is 32 bits wide.
.TP
\fB\-\-set\-xmark\fP \fIvalue\fP[\fB/\fP\fImask\fP]
Zeroes out the bits given by \fImask\fR and XORs \fIvalue\fR into the packet