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+This module matches the netfilter mark field associated with a packet
+(which can be set using the
+.B MARK
+target below).
+.TP
+[\fB!\fP] \fB\-\-mark\fP \fIvalue\fP[\fB/\fP\fImask\fP]
+Matches packets with the given unsigned mark value (if a \fImask\fP is
+specified, this is logically ANDed with the \fImask\fP before the
+comparison).