.SH "SYNOPSIS"
.
.B pkstream
+.RB [ \-46 ]
.RB [ \-l
.IR port ]
.RB [ \-p
.B "\-u, \-\-usage"
Writes a brief usage summary to standard output and exits with status 0.
.TP
+.B "\-4"
+Look up hostnames only as IPv4 addresses.
+.TP
+.B "\-6"
+Look up hostnames only as IPv6 addresses.
+.TP
.BI "\-l, \-\-listen=" port
Listen for connections on the given TCP
.IR port .