| 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 localhost address, |
| 127.0.0.1 for IPv4 and ::1 for IPv6). |
| .TP |
| \fB\-\-to\-ports\fP \fIport\fP[\fB\-\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 one of the following protocols: |
| \fBtcp\fP, \fBudp\fP, \fBdccp\fP or \fBsctp\fP. |
| .TP |
| \fB\-\-random\fP |
| If option |
| \fB\-\-random\fP |
| is used then port mapping will be randomized (kernel >= 2.6.22). |
| .TP |
| IPv6 support available starting Linux kernels >= 3.7. |
