-must be expressed as an IP address (not a DNS name). The
-\fB\-\-private\-key\fR, \fB\-\-certificate\fR, and \fB\-\-ca\-cert\fR
+must be expressed as an IP address (not a DNS name) in IPv4 or IPv6 address
+format. If \fIip\fR is an IPv6 address, then wrap \fIip\fR with square
+brackets, e.g.: \fBssl:[::1]:6632\fR.
+The \fB\-\-private\-key\fR, \fB\-\-certificate\fR, and \fB\-\-ca\-cert\fR