-This extension supports \fBtun_id\fR with two caveats: the top 32 bits
-of the \fBcookie\fR (see below) are used for \fItunnel\-id\fR and thus
-unavailable for other use, and specifying \fBtun_id\fR on
-\fBdump\-flows\fR or \fBdump\-aggregate\fR has no effect.
+This extension supports \fBtun_id\fR with three caveats: the top 32 bits
+of the \fBcookie\fR (see below) are used for \fItunnel-id\fR and thus
+unavailable for other use, specifying \fBtun_id\fR on
+\fBdump\-flows\fR or \fBdump\-aggregate\fR has no effect, and
+\fImask\fR is not supported.