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