| This target is used to set the Netfilter mark value associated with the packet. |
| It can, for example, be used in conjunction with routing based on fwmark (needs |
| iproute2). If you plan on doing so, note that the mark needs to be set in the |
| PREROUTING chain of the mangle table to affect routing. |
| The mark field is 32 bits wide. |
| .TP |
| \fB\-\-set\-xmark\fP \fIvalue\fP[\fB/\fP\fImask\fP] |
| Zeroes out the bits given by \fImask\fP and XORs \fIvalue\fP into the packet |
| mark ("nfmark"). If \fImask\fP is omitted, 0xFFFFFFFF is assumed. |
| .TP |
| \fB\-\-set\-mark\fP \fIvalue\fP[\fB/\fP\fImask\fP] |
| Zeroes out the bits given by \fImask\fP and ORs \fIvalue\fP into the packet |
| mark. If \fImask\fP is omitted, 0xFFFFFFFF is assumed. |
| .PP |
| The following mnemonics are available: |
| .TP |
| \fB\-\-and\-mark\fP \fIbits\fP |
| Binary AND the nfmark with \fIbits\fP. (Mnemonic for \fB\-\-set\-xmark |
| 0/\fP\fIinvbits\fP, where \fIinvbits\fP is the binary negation of \fIbits\fP.) |
| .TP |
| \fB\-\-or\-mark\fP \fIbits\fP |
| Binary OR the nfmark with \fIbits\fP. (Mnemonic for \fB\-\-set\-xmark\fP |
| \fIbits\fP\fB/\fP\fIbits\fP.) |
| .TP |
| \fB\-\-xor\-mark\fP \fIbits\fP |
| Binary XOR the nfmark with \fIbits\fP. (Mnemonic for \fB\-\-set\-xmark\fP |
| \fIbits\fP\fB/0\fP.) |
