libxt_connmark.man revision c6775d6c192f7e337360f238cc3ab224a406d5b8 
1This module matches the netfilter mark field associated with a connection
2(which can be set using the \fBCONNMARK\fP target below).
3.TP
4[\fB!\fP] \fB\-\-mark\fP \fIvalue\fP[\fB/\fP\fImask\fP]
5Matches packets in connections with the given mark value (if a mask is
6specified, this is logically ANDed with the mark before the comparison).
7