path: root/doc
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authorFlorian Westphal <>2017-08-27 22:24:19 +0200
committerFlorian Westphal <>2017-08-28 17:56:58 +0200
commit071fa72b1db1ad897c19846720c3df40e9c4d574 (patch)
tree2564f1ed575d0d26a08e9aa62e6f1c04eabe1e87 /doc
parent79c09386549472ecea72c60850ee33f7a4e49e9c (diff)
evaluate: convert expr_rt byteorder when evaluating statment arg
expr_rt might write data in host byte order, so make sure to convert if needed. This makes 'tcp option maxseg size rt mtu' actually work, right now such rules are no-ops because nft_exthdr never increases the mss. While at it, extend the example to not bother testing non-syn packets. Reported-by: Matteo Croce <> Signed-off-by: Florian Westphal <> Acked-by: Pablo Neira Ayuso <>
Diffstat (limited to 'doc')
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/nft.xml b/doc/nft.xml
index 4e2730f6..cf933489 100644
--- a/doc/nft.xml
+++ b/doc/nft.xml
@@ -4274,9 +4274,9 @@ ip forward ip dscp set 42
<title>change tcp mss</title>
-tcp option maxseg size set 1360
+tcp flags syn tcp option maxseg size set 1360
# set a size based on route information:
-tcp option maxseg size set rt mtu
+tcp flags syn tcp option maxseg size set rt mtu