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