-Listens for OpenFlow connections on \fIport\fR. By
-default, connections are not bound to a particular local IP address, but
-\fIip\fR may be specified to listen only for connections to the given
-\fIip\fR. For \fBpssl\fR, the \fB\-\-private\-key\fR,
-\fB\-\-certificate\fR, and \fB\-\-ca\-cert\fR options are mandatory.
+Listens for OpenFlow connections on \fIport\fR. The default
+\fIport\fR is 6633, but a future version of Open vSwitch will change
+the default to the IANA-defined port 6653. By default, connections
+are allowed from any IPv4 address. Specify \fIip\fR as an IPv4
+address or a bracketed IPv6 address (e.g. \fBptcp:6633:[::1]\fR). DNS
+names may not be used. For \fBpssl\fR, the
+\fB\-\-private\-key\fR,\fB\-\-certificate\fR, and \fB\-\-ca\-cert\fR
+options are mandatory.