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+These extensions can be used if `\-\-protocol udp' is specified. It
+provides the following options:
+.TP
+[\fB!\fP] \fB\-\-source\-port\fP,\fB\-\-sport\fP \fIport\fP[\fB:\fP\fIport\fP]
+Source port or port range specification.
+See the description of the
+\fB\-\-source\-port\fP
+option of the TCP extension for details.
+.TP
+[\fB!\fP] \fB\-\-destination\-port\fP,\fB\-\-dport\fP \fIport\fP[\fB:\fP\fIport\fP]
+Destination port or port range specification.
+See the description of the
+\fB\-\-destination\-port\fP
+option of the TCP extension for details.