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From: Paolo Valerio
To: dev@openvswitch.org
Date: Mon, 04 Jul 2022 16:29:32 +0200
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Cc: i.maximets@ovn.org
Subject: [ovs-dev] [PATCH v2] meta-flow: Document nw_proto limitation for
IPv6 later frags.
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Signed-off-by: Paolo Valerio
---
lib/meta-flow.xml | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/lib/meta-flow.xml b/lib/meta-flow.xml
index 28865f88c..a1a20366d 100644
--- a/lib/meta-flow.xml
+++ b/lib/meta-flow.xml
@@ -4101,6 +4101,15 @@ r r c c c.
opcodes greater than 255 are treated as 0; this works adequately
because in practice ARP and RARP only use opcodes 1 through 4.
+
+
+ In the case of fragmented traffic, a difference exists in the way
+ the field acts for IPv4 and IPv6 later fragments. For IPv6 fragments
+ with nonzero offset, nw_proto
is set to the IPv6 protocol
+ type for fragments (44).
+ Conversely, for IPv4 later fragments, the field is set based on the
+ protocol type present in the header.
+