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-rw-r--r--doc/payload-expression.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/payload-expression.txt b/doc/payload-expression.txt
index 3cfa7791..ffd1b671 100644
--- a/doc/payload-expression.txt
+++ b/doc/payload-expression.txt
@@ -591,6 +591,12 @@ TCP Timestamps |
kind, length, tsval, tsecr
|============================
+TCP option matching also supports raw expression syntax to access arbitrary options:
+[verse]
+*tcp option*
+[verse]
+*tcp option* *@*'number'*,*'offset'*,*'length'
+
.IP Options
[options="header"]
|==================