The specified TCP \fIport\fR (default: 975) on the given remote
\fIhost\fR.
+.TP
+\fBunix:\fIfile\fR
+The Unix domain server socket named \fIfile\fR.
+
If \fIcontroller\fR is omitted, \fBsecchan\fR attempts to discover the
location of the controller automatically (see below).
Listens for TCP connections on \fIport\fR (default: 975).
.RE
+.TP
+\fBpunix:\fIfile\fR
+Listens for connections on Unix domain server socket named \fIfile\fR.
+
.TP
\fB-p\fR, \fB--private-key=\fIprivkey.pem\fR
Specifies a PEM file containing the private key used as the switch's