From 40dbf26f8c9369ec6a7be6702cfb54d3d9c198d5 Mon Sep 17 00:00:00 2001
From: Phil Sutter <psutter@redhat.com>
Date: Wed, 30 Mar 2016 16:51:09 +0200
Subject: [PATCH] man: tc-csum.8: Add an example
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1275426
Upstream Status: iproute2.git commit dbfb17a67f9c7
commit dbfb17a67f9c7cf64a38ca734ef638a3f613546c
Author: Phil Sutter <phil@nwl.cc>
Date: Tue Mar 22 15:48:34 2016 +0100
man: tc-csum.8: Add an example
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
man/man8/tc-csum.8 | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/man/man8/tc-csum.8 b/man/man8/tc-csum.8
index 9d00aae..3a64c82 100644
--- a/man/man8/tc-csum.8
+++ b/man/man8/tc-csum.8
@@ -49,6 +49,21 @@ UDPLite header
.TP
.B SWEETS
These are merely syntactic sugar and ignored internally.
+.SH EXAMPLES
+The following performs stateless NAT for incoming packets from 192.168.1.100 to
+new destination 18.52.86.120 (0x12345678 in hex). Assuming these are UDP
+packets, both IP and UDP checksums have to be recalculated:
+
+.RS
+.EX
+# tc qdisc add dev eth0 ingress handle ffff:
+# tc filter add eth0 prio 1 protocol ip parent ffff: \\
+ u32 match ip src 192.168.1.100/32 flowid :1 \\
+ action pedit munge ip dst set 0x12345678 pipe \\
+ csum ip and udp
+.EE
+.RE
+
.SH SEE ALSO
.BR tc (8),
.BR tc-pedit (8)
--
1.8.3.1