+The second form specifies the packet's contents implicitly:
+.RS
+.IP "\fIflow\fR"
+A flow in one of two forms: either the form printed by
+\fBovs\-dpctl\fR(8)'s \fBdump\-flows\fR command, or in a format
+similar to that accepted by \fBovs\-ofctl\fR(8)'s \fBadd\-flow\fR
+command. This is not an OpenFlow flow: besides other differences, it
+never contains wildcards. \fB\*(PN\fR generates an arbitrary packet
+that has the specified \fIflow\fR.
+.RE
+.IP