| 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 redirects the packet to the machine itself by changing the |
| destination IP to the primary address of the incoming interface |
| (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" . |