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- This target is only valid in the \fBmangle\fP table, in the \fBPREROUTING\fP
- chain and user-defined chains which are only called from this chain. It
- redirects the packet to a local socket without changing the packet header in
- any way. It can also change the mark value which can then be used in advanced
- routing rules.
- It takes three options:
- .TP
- \fB\-\-on\-port\fP \fIport\fP
- This specifies a destination port to use. It is a required option, 0 means the
- new destination port is the same as the original. This is only valid if the
- rule also specifies \fB\-p tcp\fP or \fB\-p udp\fP.
- .TP
- \fB\-\-on\-ip\fP \fIaddress\fP
- This specifies a destination address to use. By default the address is the IP
- address of the incoming interface. This is only valid if the rule also
- specifies \fB\-p tcp\fP or \fB\-p udp\fP.
- .TP
- \fB\-\-tproxy\-mark\fP \fIvalue\fP[\fB/\fP\fImask\fP]
- Marks packets with the given value/mask. The fwmark value set here can be used
- by advanced routing. (Required for transparent proxying to work: otherwise
- these packets will get forwarded, which is probably not what you want.)
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