path: root/iptables.8
diff options
authorHarald Welte <>2001-01-30 12:05:09 +0000
committerHarald Welte <>2001-01-30 12:05:09 +0000
commit02d00ffdd7d00deff544a6c973902d6986d2a382 (patch)
tree1e681f04ee2a31bab02cf204da120c238d0b7d19 /iptables.8
parentfa7625a99f77e78c686d8ad890ca0a278e9475a7 (diff)
new ULOG revision: supports in-kernel batching of packets and netlink multipart messages
Diffstat (limited to 'iptables.8')
1 files changed, 11 insertions, 4 deletions
diff --git a/iptables.8 b/iptables.8
index 1a7f8102..3ea3bd93 100644
--- a/iptables.8
+++ b/iptables.8
@@ -714,16 +714,23 @@ through a
socket. One or more userspace processes may then subscribe to various
multicast groups and receive the packets.
-.BI "--ulog-nlgroup" "<nlgroup>"
+.BI "--ulog-nlgroup " "<nlgroup>"
This specifies the netlink group (1-32) to which the packet is sent.
+Default value is 1.
-.BI "--ulog-prefix" "<prefix>"
+.BI "--ulog-prefix " "<prefix>"
Prefix log messages with the specified prefix; up to 32 characters
long, and useful fro distinguishing messages in the logs.
-.BI "--ulog-cprange" "<size>"
+.BI "--ulog-cprange " "<size>"
Number of bytes to be copied to userspace. A value of 0 always copies
-the entire packet, regardless of its size.
+the entire packet, regardless of its size. Default is 0
+.BI "--ulog-qthreshold " "<size>"
+Number of packet to queue inside kernel. Setting this value to, e.g. 10
+accumulates ten packets inside the kernel and transmits them as one
+netlink multpart message to userspace. Default is 1 (for backwards
Various error messages are printed to standard error. The exit code
is 0 for correct functioning. Errors which appear to be caused by