1*a71a9546SAutomerger Merge WorkerThis is the deprecated ipv4-only predecessor of the NFLOG target. 2*a71a9546SAutomerger Merge WorkerIt provides userspace logging of matching packets. When this 3*a71a9546SAutomerger Merge Workertarget is set for a rule, the Linux kernel will multicast this packet 4*a71a9546SAutomerger Merge Workerthrough a 5*a71a9546SAutomerger Merge Worker.IR netlink 6*a71a9546SAutomerger Merge Workersocket. One or more userspace processes may then subscribe to various 7*a71a9546SAutomerger Merge Workermulticast groups and receive the packets. 8*a71a9546SAutomerger Merge WorkerLike LOG, this is a "non-terminating target", i.e. rule traversal 9*a71a9546SAutomerger Merge Workercontinues at the next rule. 10*a71a9546SAutomerger Merge Worker.TP 11*a71a9546SAutomerger Merge Worker\fB\-\-ulog\-nlgroup\fP \fInlgroup\fP 12*a71a9546SAutomerger Merge WorkerThis specifies the netlink group (1-32) to which the packet is sent. 13*a71a9546SAutomerger Merge WorkerDefault value is 1. 14*a71a9546SAutomerger Merge Worker.TP 15*a71a9546SAutomerger Merge Worker\fB\-\-ulog\-prefix\fP \fIprefix\fP 16*a71a9546SAutomerger Merge WorkerPrefix log messages with the specified prefix; up to 32 characters 17*a71a9546SAutomerger Merge Workerlong, and useful for distinguishing messages in the logs. 18*a71a9546SAutomerger Merge Worker.TP 19*a71a9546SAutomerger Merge Worker\fB\-\-ulog\-cprange\fP \fIsize\fP 20*a71a9546SAutomerger Merge WorkerNumber of bytes to be copied to userspace. A value of 0 always copies 21*a71a9546SAutomerger Merge Workerthe entire packet, regardless of its size. Default is 0. 22*a71a9546SAutomerger Merge Worker.TP 23*a71a9546SAutomerger Merge Worker\fB\-\-ulog\-qthreshold\fP \fIsize\fP 24*a71a9546SAutomerger Merge WorkerNumber of packet to queue inside kernel. Setting this value to, e.g. 10 25*a71a9546SAutomerger Merge Workeraccumulates ten packets inside the kernel and transmits them as one 26*a71a9546SAutomerger Merge Workernetlink multipart message to userspace. Default is 1 (for backwards 27*a71a9546SAutomerger Merge Workercompatibility). 28*a71a9546SAutomerger Merge Worker.br 29