| This target is only valid in the |
| .B nat |
| table, in the |
| .B PREROUTING |
| and |
| .B OUTPUT |
| chains, and user-defined chains which are only called from those |
| chains. It alters the destination IP address to send the packet to |
| the machine itself (locally-generated packets are mapped to the |
| 127.0.0.1 address). It takes one option: |
| .TP |
| .BR "--to-ports " "\fIport\fP[-\fIport\fP]" |
| This specifies a destination port or range of ports to use: without |
| this, the destination port is never altered. This is only valid |
| if the rule also specifies |
| .B "-p tcp" |
| or |
| .BR "-p udp" . |
