Sorry, I wasn't clear. VPP IPv4 supports IP update checksum. The IPv6 header has no checksum. But why doesn't VPP support update checksum for layer-4, e.g., udp/tcp/icmp? A routed data plane may reply to certain messages (e.g., icmp, tcp, gtpu echo) in the data plane and such replies could use an update checksum. If IPv4 VPP also does not support checksum update for layer-4 , we should add it.
Thanks, Hemant From: [email protected] <[email protected]> On Behalf Of hemant via lists.fd.io Sent: Tuesday, April 06, 2021 9:47 AM To: [email protected] Subject: [vpp-dev] update checksum for ipv6? VPP IPv4 supports update checksum but IPv6 does not. Why is that? IPv6 only has a compute and verify checksum. Hemant
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